The D.C. Water and Sewer Authority is conducting its annual program to flush water mains throughout the city, a procedure designed to remove sediment and improve water quality.

From 10 p.m. to 6:30 a.m. Sunday through Thursday, WASA crews are opening fire hydrants in designated neighborhoods and flushing water.

The water supply to customers is not shut off during the flushing.

Customers might notice some water discoloration early in the morning. If that happens, WASA recommends that residents open the cold water tap and allow the water to flow slowly until it is clear.

Customers should not run hot water or do laundry during the flushing. If the hot water becomes discolored, WASA recommends flushing the hot water tank by opening the valve at the bottom of the tank.

The flushing program will continue through November.

These neighborhoods, with boundary streets, are scheduled for flushing the week starting Sunday, according to information provided by WASA:

ANC 8A (work area in Southeast, bounded by Good Hope Road, Naylor Road, Southern Avenue and Alabama Avenue).

ANC 8A (work area in Southeast, bounded by Ainger Place, on both the north and south by Alabama Avenue and on the west by Stanton Road).

ANC 8A (work area in Southeast, bounded by Morris Road, 18th Place and Stanton Road, Alabama Avenue and 13th Street).

ANC 8B (work area in Southeast, bounded by Alabama Avenue, Shipley Terrace, Southern Avenue and Naylor Road).

ANC 7B (work area in Southeast, bounded by Pennsylvania Avenue, Alabama Avenue and 27th Street).

ANC 7B (work area in Southeast, bounded by Alabama Avenue, Pennsylvania Avenue, Southern Avenue and Branch Avenue).

ANC 7A (work area in Southeast, bounded by H Street, Benning Road, Southern Avenue and Burns Street).

ANC 7A (work area in Southeast, bounded by E Street, Benning Road, H Street and Ridge Road).

ANC 6C (work area in Southeast, bounded by Minnesota Avenue, 18th Street, Valley Place and 14th Street).

ANC 6C (work area in Southeast, bounded by W Street, Hunter Place, Howard Road and Martin Luther King Avenue).

ANC 8A (work area in Southeast, bounded by Howard Road, Stanton Road, Sheridan Road and Wade Road).

ANC 8A (work area in Southeast, bounded by Alabama Avenue, 21st Street, Southern Avenue and 13th Street).

ANC 8B (work area in Southeast, bounded by Mississippi Avenue, 13th Street, Southern Avenue and 9th Street).

ANC 8E (work area in Southeast, bounded by Chesapeake Street, 9th Street, Southern Avenue and 4th Street).

ANC 6C (work area in Southeast, bounded by R Street, Naylor Road, Good Hope Road, and 18th Street).

ANC 7B (work area in Southeast, bounded by Pennsylvania Avenue, 27th Street, R Street and Minnesota Avenue).

ANC 7A (work area in Southeast, bounded by C Street, Texas Avenue, Ely Place and 40th Place).

ANC 7A (work area in Southeast, bounded by East Capitol Street, Benning Road, Ely Place and Anacostia Avenue).

ANC 3D (work area in Northwest, bounded by Ashby Street, Hoban Road, Salem Lane and Canal Road).

ANC 3D (work area in Northwest, bounded by Reservoir Road, 44th Street and Canal Road).

ANC 3B (work area in Northwest, bounded by Whitehaven Parkway, Wisconsin Avenue, Reservoir Road and 39th Street).

ANC 3B (work area in Northwest, bounded by S Street, 31st Street, P Street and 35th Street).

ANC 4C (work area in Northwest, bounded by Taylor Street, Georgia Avenue, Spring Road and 14th Street).

ANC 1A (work area in Northwest, bounded by Spring Road, Holmead Place, Park Road and 16th Street).

ANC 3E (work area in Northwest, bounded by Wisconsin Avenue, Ellicott Street and Western Avenue).

ANC 3E (work area in Northwest, bounded by Ellicott Street, 42nd Street, Brandywine Street and Western Avenue).

ANC 3F (work area in Northwest, bounded by Albemarle Street, Connecticut Avenue, Upton Street, and Reno Road).

ANC 3F (work area in Northwest, bounded by Yuma Street, Linnean Avenue, Porter Street and Wisconsin Avenue).

ANC 3C (work area in Northwest, bounded by Porter Street, 27th Street, Macomb Street and 35th Street).

ANC 3G (work area in Northwest, bounded by McKinley Street, 29th Street, Broad Branch Road and Nebraska Avenue).

ANC 3G (work area in Northwest, bounded by Nebraska Avenue, Oregon Avenue, Northhampton Street and 32nd Street).

ANC 3G (work area in Northwest, bounded by Tennyson Street, Oregon Avenue, Jenifer Street and 32nd Street).

ANC 3G (with area in Northwest, bounded by Chestnut Street, Oregon Avenue, Tennyson Street and Utah Avenue).