D.C. Mun. Regs. tit. 21, § 4101

Rates and Charges for Sewer Service

Effective Oct 1, 2011Authority: Sections 203(3) and (11) and 216 of the Water and Sewer Authority Establishment and Department of Public Works Reorganization Act of 1996, effective April 18, 1996 (D.C. Law 11-111, §§ 203(3), (11), and 216; D.C. Official Code §§ 34-2202.03(3) and (11) and § 34-2202.16), and Section 6(a) of the District of Columbia Administrative Procedure Act, approved October 21, 1968 (82 Stat. 1206; D.C. Official Code § 2-505(a)). Source: Final Rulemaking published at 44 DCR 1993, 1994 (April 4, 1997); as amended by Final Rulemaking published at 47 DCR 320 (January 21, 2000); as amended by Final Rulemaking published at 49 DCR 5977 (June 28, 2002); as amended by Final Rulemaking published at 50 DCR 6452 (August 8, 2003); as amended by Final Rulemaking published at 51 DCR 8849 (September 10, 2004); as amended by Final Rulemaking published at 52 DCR 8528 (September 16, 2005); as amended by Final Rulemaking published at 53 DCR 7655 (September 22, 2006); as amended by Final Rulemaking published at 54 DCR 9178 (September 21, 2007); as amended by Final Rulemaking published at 55 DCR 9845 (September 19, 2008); as amended by Final Rulemaking published at 56 DCR 2728 (April 10, 2009); as amended by Final Rulemaking published at 56 DCR 2739 (April 10, 2009); as amended by Final Rulemaking published at 56 DCR 7534 (September 18, 2009); as amended by Final Rulemaking published at 57 DCR 8419, 8420 (September 17, 2010); as amended by Final Rulemaking published at 58 DCR 6941, 6942 (August 12, 2011); as amended by Final Rulemaking published at 59 DCR 8820, 8821 (July 27, 2012); as amended by Final Rulemaking published at 60 DCR 11239 (August 2, 2013); as amended by Final Rulemaking published at 61 DCR 9613 (September 19, 2014); as amended by Final Rulemaking published at 62 DCR 9798 (July 17, 2015); as amended by Final Rulemaking published at 63 DCR 9696 (July 22, 2016) ); as amended by Final Rulemaking published at 65 DCR 7569 (July 20, 2018); as amended by Final Rulemaking published at 66 DCR 8770 (July 26, 2019 – Part 1); as amended by Final Rulemaking published at 66 DCR 12432 (September 20, 2019); as amended by Final Rulemaking published at 67 DCR 11100 (September 18, 2020); as amended by Final Rulemaking published at 68 DCR 013639 (December 17, 2021); as amended by Final Rulemaking published at 69 DCR 009035 (July 22, 2022); as amended by Final Rulemaking published at 71 DCR 008686 (July 19, 2024).District of Columbia, Office of the Secretary

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4101 RATES FOR SEWER SERVICE

4101.1 Effective October 1, 2011, the rates for sanitary sewer service shall be:

(a) The retail sanitary sewer service rate shall be increased from Three Dollars and Seventy-Nine Cents ($3.79) for each One Hundred Cubic Feet (CCF) (or Five Dollars and Seven Cents ($5.07) for each One Thousand (1,000) Gallons (1 CCF equals Seven Hundred Forty-Eight and Five hundredths (748.05) Gallons)) of water used to:

(1) Residential Customers: Three Dollars and Ninety-Six Cents ($3.96) per CCF (or the equivalent of Five Dollars and Twenty-Nine Cents ($5.29) for each One Thousand (1,000) Gallons) of water used;

(2) Non-Residential Customers: Three Dollars and Ninety-Six Cents ($3.96) per CCF (or the equivalent of Five Dollars and Twenty-Nine Cents ($5.29) for each One Thousand (1,000) Gallons) of water used; and

(b) The annual Clean Rivers Impervious Surface Area Charge (IAC) shall be increased from Forty-One Dollars and Forty Cents ($41.40), billed monthly at Three Dollars and Forty-Five Cents ($3.45), per Equivalent Residential Unit (ERU) to Seventy-Nine Dollars and Sixty-Eight Cents ($79.68) per ERU, billed monthly as follows:

(1) Residential Customers: Six Dollars and Sixty-Four Cents ($6.64) per month for each ERU;

(2) Non-Residential Customers: Six Dollars and Sixty-Four Cents ($6.64) per month for each ERU.

4101.2 The IAC shall be based upon the Equivalent Residential Unit (ERU). An ERU is defined as one thousand square feet (1,000 sq. ft.) of impervious surface area, taking account of a statistical median of residential properties.

4101.3 All residential customers shall be assessed an IAC based on the following Six-Tier Residential Rate Structure for the IAC:

Tier	Size of Impervious Area (Square Feet)	Equivalent Residential Unit (ERU)
Tier 1	100 - 600	0.6
Tier 2	700 - 2000	1.0

Tier 3	2,100 - 3,000	2.4
Tier 4	3,100 - 7,000	3.8
Tier 5	7,100 - 11000	8.6
Tier 6	11,100 and more	13.5

4101.4 All non-residential customers shall be assessed ERU(s) based upon the total amount of impervious surface area on each lot. This total amount of impervious surface shall be converted into ERU(s), truncated to the nearest one-hundred (100) square feet.

4101.5 Impervious Only Properties are properties that do not currently have metered water/sewer service (e.g. parking lots) and require the creation of new accounts. Impervious Only Properties with more than twenty-five (25) ERU’s shall be billed monthly; those with less than twenty-five (25) ERU’s shall be billed every six (6) months.

SOURCE: Final Rulemaking published at 44 DCR 1993, 1994 (April 4, 1997); as amended by Final Rulemaking published at 47 DCR 320 (January 21, 2000); as amended by Final Rulemaking published at 49 DCR 5977 (June 28, 2002); as amended by Final Rulemaking published at 50 DCR 6452 (August 8, 2003); as amended by Final Rulemaking published at 51 DCR 8849 (September 10, 2004); as amended by Final Rulemaking published at 52 DCR 8528 (September 16, 2005); as amended by Final Rulemaking published at 53 DCR 7655 (September 22, 2006); as amended by Final Rulemaking published at 54 DCR 9178 (September 21, 2007); as amended by Final Rulemaking published at 55 DCR 9845 (September 19, 2008); as amended by Final Rulemaking published at 56 DCR 2728 (April 10, 2009); as amended by Final Rulemaking published at 56 DCR 2739 (April 10, 2009); as amended by Final Rulemaking published at 56 DCR 7534 (September 18, 2009); as amended by Final Rulemaking published at 57 DCR 8419, 8420 (September 17, 2010); as amended by Notice of Final Rulemaking published at 58 DCR 6941, 6942 (August 12, 2011).