Article 1 (Purpose) The purpose of these Rules shall be to stipulate matters necessary to enforce the Seoul Metropolitan Government Ordinance on Sewerage Use. <Amended on Oct. 10, 2019>

Article 2 (Installation Scope of a Public Sewerage System) The scope of sewerage projects that can be implemented by the Mayor of Seoul Metropolitan City (hereinafter referred to as the "Mayor") among facilities that are installed and managed by the head of autonomous Gu (hereinafter referred to as the "head of Gu") in the Seoul Metropolitan City under Article 4(2) of the Seoul Metropolitan Government Ordinance on Sewerage Use (hereinafter referred to as the "Ordinance") shall be as follows: <Amended on Oct. 10, 2019>
1. Sewerage project extending 2 or more autonomous Gus;
2. Comprehensive maintenance project under the sewerage maintenance master plan; and
3. Other sewerage projects that the Mayor deems as necessary.
[This Article Wholly Amended on Aug. 19, 2010]

Article 2-2 (Reasons for Postponement of Construction Works) The term "compelling reason" in Article 14(1) of the Ordinance shall be as follows:
1. Where a drainage system construction work with length of 30 meters or longer shall be executed to connect to a public sewerage system;
2. Where it is impossible to execute a construction work within a period of time due to obstacles, such as rock, etc.;
3. Where a construction work cannot be executed within a period of time due to restriction on road excavation; or
4. Where management authorities (refer to the management authorities under subparagraph 10 of Article 2 of the Ordinance; hereinafter, the same shall apply) deem that there is a compelling reason for public interest.
[This Article Newly Inserted on Aug. 19, 2010]

Article 3 (Reporting of Installation of a Drainage System) Where a drainage system is a separate type when its installation is reported under Article 14 of the Ordinance and its management authorities are different as it is connected to a public rainwater culvert and a public wastewater culvert (intercepting culvert), its installation shall be reported or applied to the head of Gu which is a management authority of public rainwater culvert and the head of Gu shall consult the Mayor thereabout. <Amended on Aug. 19, 2010; Jan. 14, 2016>

Article 4 (Reporting of Installation of a Drainage System) (1) A person who intends to report the installation of a drainage system under Article 14 of the Ordinance shall file an application under Attached Form 1 with management authorities. <Amended on Jan. 14, 2016>
(2) Deleted <Jan. 14, 2016>
(3) Deleted <Jan. 14, 2016>
[Title Amended on Jan. 14, 2016]

Article 5
Deleted <Jan. 14, 2016>

Article 6
Deleted <Jan. 14, 2016>

Article 7 (Application for Final Inspection) (1) An application for final inspection of a drainage system under Article 19(1) of the Ordinance shall be as shown in Attached Form 3.
(2) Where management authorities receive an application for final inspection under paragraph (1) above, the management authorities shall issue the applicant with a certificate of final inspection of the drainage system under Attached Form 4 no later than 7 days from the date on which the application is received; Provided, That where the drainage system fails to meet standards for installation, structure, etc. of drainage systems, such fact shall be notified to the applicant no later than 5 days from the date of application.

Article 8 (Reporting) (1) The commencement of service under Article 21 of the Ordinance shall be reported to the head of Gu in accordance with the following forms; Provided, That reports of use of water supply and continued use of ground water among reports under subparagraphs (3) and (4) (limited to changes in business type) shall be filed with a director of a competent waterworks office in the Seoul Metropolitan City (hereinafter referred to as the "Director of Waterworks Office").
1. In case of commencement of service of a public sewerage system, Attached Form 5 (pursuant to Attached Form 6 in case of temporary service);
2. When discharging ground water, river water, hot spring water, sea water, etc. (hereinafter referred to as "Ground Water, etc.") into public a sewerage system, Attached Form 7, Attached Form 8, and Attached Form 9;
3. When an amount of water used is substantially different from an amount of wastewater discharged, Attached Form 10;
4. When reporting a change in use of sewerage system, Attached Form 11.
(2) A report under subparagraphs 2 to 3 of paragraph (1) shall be prepared as of the end of each month and filed together with evidential documents no later than the 7th day of the following month.
(3) Otherwise, the time and amount used for service commencement shall be governed by the time and amount inspected as determined by the head of Gu or a director of a waterworks office (hereinafter referred to as the "Head of Management Authority").
(4) The reporting under Article 21(1)4 of the Ordinance shall apply only to users whose amount of water used is different from an amount of wastewater discharged by 30% or more. The users include alcoholic beverage manufacturers, ice manufacturers, soft drink manufacturers, cement processors, etc.
(5) If the commencement of service is reported under Article 21 of the Ordinance, a head of management authority shall record such fact in a register of reports of service commencement of a public sewerage system under Attached Form 12 and public officials in charge shall arrive on the spot and check what is reported.

Article 9 (Permission for Occupation and Use) (1) A person who intends to occupy and use a public sewerage system shall submit, to the management authorities, an application for permission to occupy and use a public sewerage system under Attached Form 13.
(2) When a person who occupies and uses installs a structure, he/she shall submit, to the management authorities, an application for final inspection of the structure that occupies and uses a public sewerage system under Attached Form 14 no later than 7 days from the date on which the installation of the structure is completed.

Article 10 (Recognition of Amount of Sewage Discharged by Users, such as Groundwater, etc.) (1) In addition to water supply, an amount of sewage discharged by users, such as groundwater, etc. shall be recognized and inspected as follows: <Amended on Oct. 10, 2019; Jan. 13, 2022>
1. Where a meter was installed;
A. The Seoul Metropolitan Government Ordinance on Water shall apply mutatis mutandis to the calculation of the amount of sewage discharged by users with flow meters installed; Provided, That in such cases, only the flow meters examined by national and public examination authorities shall be installed in accordance with the standards determined by the Mayor.
B. Where an hour meter is installed at a user of an automatic motor pump, calculate the water pumping capacity of the automatic motor pump and hours of use according to the hour meterAmount used for 1 month = Runoff per hour × Water pumping hours for 1 month;
C. Where a wattmeter is installed at a user of an automatic motor pump, calculate the amount of water pumped and the amount of electricity used Amount used for 1 month = Runoff per Kw × Amount of electricity used for 1 month;
2. Where a meter was not installed;
A. Where water is supplied through a water supply culvert, calculate the hourly runoff by caliber and water supply hoursAmount used for 1 month = Hourly runoff by caliber x Water supply hours for 1 month;
B. For users of manual pumps, wells, valley water, sea water, etc. for whom water is not supplied through a water supply culvert, the amount used shall be calculated in light of scale of business, population in use, water pumping facility, size of water tank, status of water use, etc.
C. For those using exclusively for household use, the monthly amount used shall be estimated to be 4 cubic meters per user; Provided, That in case of a flush toilet, the monthly amount used shall be calculated at 0.2 cubic meters per 3.3 square meters of building (the total floor space). Where water other than water supply is used for fish farms, indoor pools, etc. with size of 16.5 square meters or more, the amount used shall be calculated in light of their size, period of use, etc., and rounded down below the decimal point.
(2) An hourly runoff under paragraph (1) above shall be calculated by water tank, portable flowmeter, transient flowmeter, ultrasonic wave flowmeter, etc. or by other proper methods; Provided, That where an hourly runoff could not be calculated with a water tank, etc., it could be calculated with a graduate or under a runoff standard table by caliber under Attached Table 1.

Article 11 (Adjustment of Use Fees) (1) Where a single user who uses water supply, groundwater, etc. for the same business type and has two or more water pumping facilities, use fees shall be adjusted based on a quantity computed by adding sewage discharged from all water pumping facilities.
(2) The quantity of sewage discharged to public sewerage system due to indoor leakage shall be excluded from the adjustment.
(3) Where a business has 2 or more business types supplies water from water supply, groundwater, etc. using the same water pumping facilities, use fees shall be calculated depending on a fee rate classified based on the type of main sewage under Article 23(2) of the Ordinance; Provided, That the same shall not apply, where 2 or more businesses with different types of business supply water with different water pumping facilities or can measure the amount of water supplied, respectively.
(4) A deposit for temporary use of a public sewerage system under Article 27(3) of the Ordinance shall be calculated based on a monthly average discharge specified in a declaration of temporary use of a public sewerage system. And charges for 3 months shall be collected when receiving the declaration.

Article 12 (Determination of Hourly Runoff) (1) The head of Gu shall inspect and determine the hourly runoff of water pumping facilities of users of groundwater, etc. 2 or more times a year (May and November) according to a written inspection of the hourly runoff of water pumping facilities under Attached Form 15. Where a user requests or it is necessary due to reasons, such as fluctuation of amount used by season, the head of Gu shall inspect and determine the hourly runoff from time to time and notify the results thereof to a director of waterworks office.
(2) The inspection and determination under paragraph (1) above shall be made with all available equipment, such as transient flowmeter, ultrasonic wave flowmeter, graduate, water tank, portable flowmeter, flowmeter installed by a user. The inspection and determination shall be made in the presence of the user and the results thereof shall be confirmed by the user. <Amended on Jan. 13, 2022>

Article 13 (Determination of Reduction) (1) Where the amount of water used which is reported is substantially different from the amount of sewage discharged, a head of management authority shall examine the declaration of such difference. If the head of management authority deems that the declaration is reasonable, he/she shall determine the reduction and rate thereof and shall record and manage such fact in a register of reduction under Attached Form 16.
(2) As to petitioners for reduction with a constant reduction ratio or small fluctuation by season, such as alcoholic beverage manufacturing businesses, reduction may be made depending on the reduction ratio without monthly declaration; Provided, That even in such cases, it shall be determined whether to perform re-inspection after receiving declaration two or more times a year (May and November, and from time to time where a compelling reason arises).

Article 14 (Inspection of Person Subject to Collection) (1) The head of Gu shall do the following for declarants regarding the commencement of service of public sewerage system under Article 21 of the Ordinance: assign a sewage number by administrative Dong; prepare a register of sewerage system numbers under Attached Form 17; finalize a list of persons subject to collection of use fees for public sewerage system; and notify a director of waterworks office of a list excluding temporary users of groundwater, etc.
(2) As to the sewage number under paragraph (1) above, serial numbers shall be assigned in an order recorded in a register of sewerage system numbers and, when it is required to subdivide the sewage number, multiple numbers shall be assigned.
(3) A sewage number may not be changed arbitrarily; Provided, That the same shall not apply, when it is deemed necessary to assign all sewage numbers by dong anew or rearrange route rankings.

Article 15 (Inspection Book) (1) A management agency head shall prepare a sewage inspection card (hereinafter referred to as the "Inspection Book") under Attached Form 18 based on a list of persons subject to the collection of use fees for public sewerage system as finalized under Article 14(1).
(2) The Inspection Book under paragraph (1) above shall determine the ranking of daily inspection based on inspection ranking by inspection area and shall be kept on file. In such cases, the inspection ranking may not be changed arbitrarily, unless it is highly unreasonable.
(3) The Inspection Book in which use of a sewerage system is discontinued shall be kept on file in the order of sewage numbers by Dong and maintained separately.

Article 16 (Check) (1) The amount of sewerage system used shall be checked on the same day every month; Provided, That the check shall be made within 3 days from the date of check, unless there is a compelling reason.
(2) When checking the amount of sewerage system used under paragraph (1) above, the following shall be verified:
1. Instrument No.;
2. Whether the instrument works normally;
3. Whether the instrument is sealed;
4. Guidelines on the instrument;
5. Whether business conditions under which the instrument is used are changed;
6. Whether water supply facilities are changed;
7. Whether discharge facilities are changed; and
8. Whether sewerage laws and the related statutes are violated.
(3) Public officials in charge shall prepare a work report under Attached Form 19 as attaching a violator acknowledgment, when matters falling under paragraph (2)8 are found and such matters shall be recorded in a book of receipt and handling of work reports under Attached Form 20. Also, a card that monitors a violator of the Ordinance on the Use of Sewerage System under Attached Form 21 shall be prepared and verified on a date of check for the relevant area.

Article 17 (Cards for Furnishing) (1) A management agency head shall issue a card for furnishing users under Attached Form 22 to users of groundwater, etc.
(2) When checking the amount of sewerage system used, the details thereof shall be recorded in the Inspection Book and a card for furnishing users.

Article 18 (Adjustment and Computer Processing) (1) The amount of sewerage system used checked under Article 16 shall be recorded in the Inspection Book and so adjusted.
(2) Where a new user of a sewerage system is added or the existing user of the sewerage system is changed, the Inspection Book shall be revised without delay. Where it is recognized, based on a check of the amount of sewerage system used, that there is an anomaly, it shall be checked again. And when a reason for correction is found, the correction shall be made without delay.
(3) The amount of sewerage system used, addition of a new user of sewerage system, change in the existing user of the sewerage system, and the results of correction to the amount of sewerage system used under paragraphs (1) and (2) above shall be notified to the computer processing department without delay.
(4) The computer processing department shall process the data so notified under paragraph (3) above and notify the processing results to a director of waterworks office.

Article 19 (Resolution on Arrangement) (1) The sewerage system fee and other revenue received on a regular basis shall be entered in the books at the end of every month and shall be resolved on arrangement in accordance with the arrangement resolution document under Attached Form 23 as of the first of the following month; Provided, That the arrangement may be resolved from time to time in case of frequent arrangement and compelling reasons.
(2) Evidential documents shall be attached to the resolution on arrangement under paragraph (1) above. And matters whose arrangement is resolved shall be recorded in a resolution register on arrangement of revenue under Attached Form 24.

Article 20 (Preparation and Service of Payment Notice) (1) Where the head of Gu deems necessary, he/she may notify sewerage system use fee, other money to be collected, etc. under Attached Form 25. <Amended on Sep. 24, 2009>
(2) Notices shall be prepared for each Inspection Book in accordance with the statement of arrangement, checked again whether they are erred, and served no later than seven (7) days from a deadline. <Amended on Sep. 24, 2009>

Article 21 (Collecting Agency) Commercial financial institutions shall, in principle, act as a collecting agency of sewerage system use fee, occupation and use fee, other money to be collected, etc.

Article 22 (Collection Total) (1) A revenue treasurer shall prepare a daily collection total table for the collection notified by financial institutions under Attached Form 26 and record the same in a register of collection by financial institutions under Attached Form 27.
(2) Daily collection total tables shall be classified by area in the current year and the preceding year and daily collection total slips shall be prepared under Attached Form 28 and shall be kept based on the month and day.
(3) A revenue treasurer shall compare and check whether a total in the daily collection total slip coincides with a total in the daily collection table.
(4) A revenue treasurer shall check total arranged amount, collected amount, mistaken amount, appropriation refund, reduction, and unearned amount and shall prepare a tax revenue collection table under Attached Form 29

Article 23 (Collection Stamp) (1) When the collection total is completed, a collection stamp shall be imprinted on a collection book (or a delinquency management card, in case of delinquency) under Attached Form 30 based on a payment notice.
(2) An image of the collection stamp under paragraph (1) above shall be registered in a register of stamp seals under Attached Form 31 and matters concerning the management of stamp images shall be specified and managed. The same shall apply to changes in stamp images and management thereof.

Article 24 (Arrears and Urging of Payment) (1) Where the use fee, occupation and use fee, charge on burden-causing entity, and other charges are not paid until their deadlines, a reminder containing arrears under Article 33 of the Ordinance shall be issued.
(2) A reminder under paragraph (1) above shall be issued together with water bills, in case of users of water supply. Use fees, occupation and use fee, and charge notified separately from water bills shall be governed by Attached Form 32.
(3) The arrears under paragraph (1) above may be resolved in a joint use of arrangement resolution. For an amount in arrears not paid even 2 months after the deadline, the delinquency management card under Attached Form 33 shall be prepared and resolved.
(4) The amount in arrears resolved as arrears after the deadline shall be recorded for each Dong and in an order of sewage numbers in the delinquency management card and so managed.
(5) Where there is remaining amount in arrears after verifying the delinquency management card, such facts shall be recorded in a reminder that shall be served prior to a date on which the urging commences.

Article 25 (Application for Reduction) A person who intends to get use fee reduction under Article 34(2) of the Ordinance shall file an application for reduction under Attached Form 34 with a management agency head. <Amended on Oct. 8, 2009>

Article 26 (Objection) (1) A petition for re-examination of imposition and collection of sewerage system use fee, occupation and use fee, and other payments prescribed by the Ordinance shall be regarded as the raising of objection, irrespective of their name.
(2) Where an objection under paragraph (1) above is filed, the objection shall be investigated according to an investigation of objection under Attached Form 35 and determined according to a decision on objection under Attached Form 36. And a petition shall be served with a decision under Attached Form 37.

Article 27 (Faulty Objection) Where an objection is raised again against a decision on objection, such objection shall be dismissed. The same shall apply to objections raised after the period for raising an objection under Article 35(1) of the Ordinance.

Article 28 (Appropriation and Refund of Mistaken Amount) (1) Where a mistaken amount occurs due to erroneous payment, double payment, cancellation of imposition, correction decision, reduction, etc. after payment, a management agency head and a director of a sewage treatment center shall do the following: record such facts in a mistaken amount book under Attached Form 38; prepare a mistaken amount appropriation resolution under Attached Form 39 or a mistaken amount appropriation refund resolution under Attached Form 40; appropriate to other unpaid amounts to be collected; and refund the remaining amount to a payer without delay; Provided, That where a mistaken amount is not recorded in the mistaken amount book or shall not be handled as a mistaken amount, the refund shall be resolved after receiving an application for refund of mistaken amount under Attached Form 41 to which a receipt is attached.
(2) Where a mistaken amount shall be refunded under paragraph (1) above, the following shall specify necessary matters, such as amount, reason, payment procedures, payment place, details of appropriation to other unpaid amounts to be collected, etc.: a notice of appropriation of mistaken amount under Attached Form 42 and Attached Form 43; and a notice of refund of mistaken amount under Attached Form 44 and Attached Form 45.
(3) The refund of mistaken amounts under paragraph (1) above shall be made from an amount to be collected during the year when the refund is made; Provided, That where an accounting closure deadline in a fiscal year when a mistaken amount is made does not pass, the refund shall be made from an amount to be collected in the relevant fiscal year.

Article 29 (Management of Meters) (1) When public officials find that a meter does not work normally due to failure, etc., they shall prepare and notify a work report without delay to the head of Gu.
(2) Where the head of Gu is notified under paragraph (1) above, he/she shall give users a notice that demands that they replace and install a flowmeter under Attached Form 46 so that a meter shall be replaced and installed within 20 days.
(3) Where a reason under paragraph (1) above occurs in a meter installed by the Mayor, the head of Gu shall have users install a meter under paragraph (2), verify the pointer and sealing of replaced meter, record such facts in a register of management numbers and store the replaced meter.
(4) After replacing a meter, users shall file an application for sealing with the head of Gu by phone. The head of Gu shall seal the meter and notify such facts to a head of waterworks office no later than 3 days.
(5) The head of Gu may ask certified examination agencies to examine the meter so removed under paragraph (2) above. <Amended on Jan. 13, 2022>
(6) When public officials find that a time meter does not work normally due to failure, etc., they shall handle it under Attached Form 47 through Attached Form 49 by applying paragraphs (2) through (5) mutatis mutandis.

Article 30 (Examination of Meters) (1) When it is recognized that a meter is abnormal in calculating its use amount, a user may request the head of Gu or an authorized agency to examine the meter.
Corrected use hours = Adjusted hours ×
(2) Where a meter is a time meter and an error from the findings of examination exceeds 1/100, the use amount for the relevant month shall be corrected. Where the use amount for the relevant month so adjusted based on the examination findings is mistaken, a refund or an additional collection shall be made as settling with use fees for the following month.
(3) Where a meter is a flowmeter or a wattmeter, the Seoul Metropolitan Government Ordinance on Waterworks or the electricity supply rules of the Korean electric power corporation shall apply mutatis mutandis to a method that handles the examination findings. <Amended on Oct. 10, 2019>

Article 31 (Standards and Notification of Disposition of Administrative Fines) (1) The administrative fines under Article 40 of the Ordinance shall be imposed under the Attached Table 2.
(2) A charge exempted from the administrative fines under Attached Table 2 shall be calculated by subtracting the amount calculated based on a use amount already declared from the use fee calculated based on the amount actually used.
(3) A management agency head and a director of sewage treatment center shall notify the disposition under paragraph (1) above to a person who is obligated to pay within a period of 10 to 20 days. In case of persons who are obligated to pay jointly (where 2 or more users violate the Ordinance), the persons shall be notified severally.

Article 32 (Transfer) (1) A declaration of transfer of sewerage system user shall be made with a declaration of transfer under Attached Form 50 to which documents proving house ownership are attached. Where it is recognized that a user is changed, the declaration of transfer shall be handled ex officio.
(2) Where the transfer under paragraph (1) above is declared, the inspection book, a register of sewerage system numbers, etc. shall be reorganized.

Article 33 (Charge on Burden-Causing Entity) (1) A charge on burden-causing entity shall be imposed for the whole of Seoul Metropolitan City but a charge on burden-causing entity under Ordinance Attached Table 6 shall not be imposed in areas where sewage is not intercepted.
(2) When calculating a wastewater generation amount under Article 29(1)1 of the Ordinance, the sewage generation amount of the existing facilities or buildings shall be deducted. In such cases, an alteration of use shall be included.
(3) A sewage generation amount under Article 31(2) of the Ordinance shall be calculated as follows: <Amended on Aug. 19, 2010>
1. In case of complex construction projects, such as a housing site development project, more of the amount in the master or working design report of the relevant project or a value calculated by multiplying a planned population of the relevant area with the maximum daily sewage by administrative district under the set master plan shall be the sewage generation amount. In such cases, the term "complex construction projects" refers to a project that constructs a complex (site) and buildings within the complex after obtaining separate approval under the related laws and regulations; and
2. The sewage generation amount of other projects shall be calculated by applying a method that calculates the wastewater generation amount for each use of buildings under the public notification of the Ministry of Environment. <Newly Inserted on Aug. 19, 2010>
(4) A head of department who approves, permits, or authorizes projects, facilities, buildings, etc. on which the charge on burden-causing entity is imposed shall notify such facts to a department that manages the public sewerage system. Where a certificate of use (final) inspection is issued, it shall be verified whether the charge on burden-causing entity is paid.
(5) A head of department that manages public the sewerage system and is notified of the fact that projects, facilities, buildings, etc. were approved, permitted, or authorized under paragraph (4) above shall do the following: calculate a charge on burden-causing entity; set a deadline to the day before the scheduled completion date (including the date of approval for temporary use or alteration of use) of the relevant projects, facilities, buildings, etc.; to issue a payment bill; and collect the charge on burden-causing entity.
(6) Where projects, subject to a charge on burden-causing entity have been constructed for more than 1 year and the charge on burden-causing entity is more than 100 million won, the charge on burden-causing entity may be paid in installments by mutual consent of a person with imposition authority and a person obligated to pay.
(7) A charge on burden-causing entity under Articles 29 and 31 of the Ordinance shall be calculated based on the wastewater generation amount at the time of completion of the relevant project or facilities and a unit cost of the charge on burden-causing entity in the year of completion; Provided, That a unit cost of the preceding year shall be applied until a unit cost of charge on burden-causing entity in the year of completion is publicly announced.

Article 34 (Collection of Occupation and Use Fee) As to the occupation and use fee of the public sewerage system under Article 65 of the Sewerage Act and the charge on burden-causing entity under Article 61 of the same Act, a bill shall be issued with a deadline of 10~30 days.

Article 35 (Management of Large Quantity Users) (1) The head of Gu shall prepare and manage a table that analyzes and manages the adjustment of large quantity users under Attached Form 51 for the following:
1. User who uses groundwater of 300 cubic meters or more every month; or
2. User who uses river water and industrial water of 300 cubic meters or more every month.
(2) Matters to be checked every month shall be recorded in the analysis and management table under paragraph (1) above and the arrangement, such as amount, ratio, etc. of fluctuation shall be analyzed. Where it is recognized, based on the findings of analysis, that the arrangement is abnormal or users whose arrangement fluctuates more than 10% shall be checked and managed. A card shall be prepared for uses who shall be checked and managed. Such facts shall be recorded in a register of management, check, analysis, and countermeasure under Attached Form 52 and shall be verified and inspected 2 or more times every month.

Article 36 (Consigned Collection) (1) The collection of sewerage system use fee, occupation and use fee, and other money to be collected may be consigned to other local governments or affiliated agencies in relation to waterworks.
(2) Procedures and cost of collection necessary for the consigned collection under paragraph (1) above shall be governed by mutual agreement.

Article 37 (Monthly Report) (1) A management agency head and a director of sewage treatment center shall report the following to the Mayor by the end of the following month:
1. Arrangement of revenue of sewerage system special accounting under Attached Form 53;
2. Receipt of sewerage system special accounting under Attached Form 54; and
3. Mistaken amount of sewerage system special accounting under Attached Form 55;
(2) A management authority head shall report the disposition against violation of the Ordinance on the use of sewerage system under Attached Form 56 to the Mayor by 15th of the following month.
(3) The head of Gu shall report the management inspection findings under Attached Form 57 to the Mayor by 15th of the following month.

Article 38 (Mutatis Mutandis Application) Other than what is stipulated as to the collection of sewerage system use fee, occupation and use fee, other charges, etc. by this Ordinance, the following shall apply mutatis mutandis: The Enforcement Rules of the Seoul Metropolitan Government Ordinance on Waterworks; Seoul Metropolitan Government Ordinance on Industrial Water; and Seoul Metropolitan Government Ordinance on the Collection of River Occupation Fee. <Amended on Jan. 14, 2016; Jan. 10, 2019>

Addenda <Act No. 2037, Oct. 24, 1983>
(1) (Enforcement Date) These rules shall enter into force on the date of their promulgation.
Addenda <Act No. 2054, Feb. 23, 1984>
These Rules shall enter into force on the date of their promulgation. The exemption under monthly basic use amount for persons eligible for livelihood protection shall apply from the payment for February 1984 (Yongsan-gu and Dongjak-gu: payment for March).
Addenda <Act No. 2177, May 1, 1987>
These Rules shall enter into force on the date of their promulgation.
Addenda <Act No. 2313, Nov. 16, 1989>
These Rules shall enter into force on the date of their promulgation; Provided, That the revision of Article 17(1)6 shall enter into force on the date 1 month after their promulgation.
Addenda <Act No. 2632, Aug. 20, 1994>
(1) (Enforcement Date) These rules shall enter into force on or after Aug. 21, 1994.
(2) (Transitional Measures) Arrears that shall be paid prior to the enforcement of these rules shall be governed by the previous provisions.
Addenda <Act No. 2751, Apr. 6, 1996>
These Rules shall enter into force on the date of their promulgation.
Addenda <Act No. 2915, Apr. 6, 1998>
These Rules shall enter into force on the date of their promulgation.
Addenda <Act No. 2997, Apr. 15, 1999>
(1) (Enforcement Date) These rules shall enter into force on the date of their promulgation; Provided, That the revision of Article 2-2 shall enter into force on May 1, 1999 and the revision of Articles 20(4), 20(5) and 39 shall enter into force on May 20, 1999.
(2) (Abolition of Other Provisions) The regulations for charge of sewerage system in Seoul Metropolitan City (Seoul Metropolitan Government Directive No. 887) shall abolish this provision.
Addenda <Act No. 3033, Jul. 10, 1999>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3105, Mar. 25, 2000>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3175, Mar. 20, 2001>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3235, Jan. 15, 2002>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3260, Jun. 5, 2002>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3407, Sep. 6, 2004>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3473, Jan. 5, 2006>
(1) (Enforcement Date) These rules shall enter into force on the date of their promulgation.
(2) (Applicability) The revision of Article 27(1)8 shall apply to payment from February 2006.
Addenda <No. 3565, Jul. 30, 2007>
(1) (Enforcement Date) These rules shall enter into force on the date of their promulgation.
(2) (Applicability to Reduction or Exemption) The revision of subparagraph 9 of Article 27 shall apply to the reading on or after Sep. 22, 2007.
Addenda <No. 3615, Apr. 3, 2008> Addenda (Hide)
Article 1 (Enforcement Date)
These rules shall enter into force on the date of their promulgation and apply to payment from July 2008.
Article 2 (Expiration Date)
The revision of Article 27(1)9 shall have force and effect up to payment in December 2010.
Addenda <No. 3653, Feb. 12, 2009>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3688, Sep. 24, 2009> (Enforcement Rules of the Seoul Metropolitan Government Ordinance on Waterworks) Addenda (Hide)
Article 1 (Enforcement Date)
These Rules shall enter into force on Oct. 1, 2009.
Article 2 (Revision of Other Rules)
The enforcement rules of the Seoul Metropolitan Government Ordinance on the Use of Sewerage System are partially revised as follows:
Article 20(1) shall be deleted and paragraphs (2) and (3) of the same Article shall be paragraphs (1) and (2), respectively.
Addenda <No. 3699, Oct. 8, 2009>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3711, Dec. 10, 2009>
These Rules shall enter into force on the date of their promulgation.
Addenda <No. 3763, Aug. 19, 2010>
These Rules shall enter into force on the date of their promulgation. <Amended on Jan. 14, 2016>
Addenda <No. 4062, Jan. 14, 2016>(Rules for Revision of the Enforcement Rules of the Seoul Metropolitan Government Ordinance of Finance Management on the Comprehensive Reorganization of Local Statutes)
These Rules shall enter into force on the date of their promulgation.
Addenda (Comprehensive Reorganization Rules for Upper Statutes and Ordinances of the Seoul Metropolitan Government Rules) <No. 4303, Oct. 10, 2019.>
These Rules shall enter into force on the date of their promulgation.
Addenda (Seoul Metropolitan Government Rules on the Comprehensive Reorganization of Difficult Sino-Korean Characters) <No. 4461, Jan. 13, 2022>
These Rules shall enter into force on the date of their promulgation.