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July 25, 2014
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Environment

Metropolitan Washington Region
Water Supply Agencies


The following agencies withdraw water from the Potomac River, various reservoirs, or groundwater, and then provide state of the art treatment. The treated water is then distributed directly to customers, or to other wholesale customers who are responsible for distribution to customers. For information on water distributors, please go to: http://www.mwcog.org/environment/water/watersupply/distributors.asp

Agency/Contact Information
Source
Treatment
Distribution
Quality

Fairfax Water
P.O Box 1500
Merrifield, VA 22116-0815

Phone: 703-698-5800
Fax: 703-698-1759

Link to FW's Website

Potomac River: intake above Great Falls

Occoquan River:
8.2 billion gallons stored in Occoquan Reservoir

Other: Small percentage from wells or purchased from other jurisdictions

As a Co-op utility, FCWA benefits from storage in Jennings Randolph and Little Seneca reservoirs.

Corbalis Treatment Plant on the Potomac can treat up to 150 mgd

Occoquan, Lorton Treatment Plants on the Occoquan can treat up to 112 mgd

A new plant, Griffith, is under construction near the old Occoquan and Lorton plants. It will have an initial capacity of 120 mgd expandable to 160 mgd

Service Area: large portions of Fairfax County

Wholesale Customers: City of Falls Church, LCSA, PWCSA, Virginia-American Water Company. Smaller amounts to Herndon, Ft. Belvoir, Lorton Correctional Facility, Dulles International Airport

Average Demand: 135 mgd
Maximum Daily Demand:
220.7 mgd (6/99)

Number of Customers: 209,954

Read the Consumer Confidence Report on FW's website

Washington Aqueduct
U.S. Army Corps of Engineers 5900 MacArthur Blvd., NW Washington D.C. 20315-0220

Phone: 202-764-2753

Link to Washington Aqueduct's website

Potomac River: intakes at Great Falls and Little Falls

As a Co-op utility, Washington Aqueduct benefits from storage in Jennings Randolph and Little Seneca reservoirs.

Dalecarlia Water Treatment Plant can treat up to 240 mgd

McMillan Water Treatment Plant can treat up to 150 mgd

Wholesale Customers: DC WASA, Arlington County DPW, Falls Church DES

 

Consumer Confidence Reports available from DC WASA, Arlington County and Falls Church.

Washington Suburban Sanitary Commission
14501 Sweitzer Lane
Laurel, MD 20707

Phone: 301-206-8861
Fax: 301-206-7005

Link to WSSC's website

Potomac River: intake upstream of Great Falls

Patuxent River: 10.2 billion gallons stored in Triadelphia and T. Howard Duckett Reservoirs

As a Co-op utility, WSSC benefits from storage in Jennings Randolph and Little Seneca reservoirs.

Potomac Water Filtration Plant can treat up to 285 mgd

Patuxent Water Filtration Plant can treat up to 70 mgd

A replacement plant on the Patuxent is scheduled to be on-line by February of 2005. It will have a 56 mgd capacity and an estimated emergency capacity of up to 70 mgd.

Service Area: Major portions of Montgomery County, including Gaithersburg and Takoma Park, and Prince George's County, including College Park and Greenbelt; excludes Rockville, Poolesville, Amber Meadows, and parts of Bowie

Wholesale Customers: Andrews Airforce Base, Howard County DPW (future customer: Charles County)

Average demand: 167 mgd
Maximum Daily Demand: 267.3 mgd (8/88)

Total Connections: 408,500

Read the Consumer Confidence Report on WSSC's website

City of Bowie Department of Public Works
16500 Annapolis Road
Bowie, MD 20715

Phone: (301) 262-6200

Link to Bowie's website

Groundwater City of Bowie Water Plant can treat 5.2 mgd

Service Area: Most of the City of Bowie (website lists locations in detail). Other parts of the city get water from WSSC.

Average Demand: 2.3 mgd

Maximum Daily Demand: 4 mgd

Number of Customers: 25,000

Read the Consumer Confidence Report on the city's website

City of Frederick Department of Public Works
111 Airport Drive East
Frederick, MD 21701

Phone: 301-694-1440
Fax: 301-631-1907

Link to Frederick City's website

Linganore Creek, Monocacy River, Fishing Creek Reservoir

Linganore Water Plant can treat 6 mgd and accounts for 59% of the city's water

Monocacy Water Plant can treat 3 mgd and accounts for 25%

Fishing Creek Plant can treat 1.5 mgd and accounts for 16%

Service Area: City of Frederick

Average Demand: 6.5 mgd
Maximum Daily Demand: 8.4 mgd

Number of Customers: 50,000

Read the Consumer Confidence Report under the Public Information section of the city's website or contact Curtis Orndorff at 301-694-1169 to get a copy

Frederick County Division of Utilities and Solid Waste Management
7303 Marcie's Choice Lane, Frederick, MD, 21704

Phone: 301-694-1825

Link to Frederick County's DUSWM website

Potomac River

Lake Linganore

New Design Water Treatment Plant on the Potomac can treat 6.6 mgd

Lake Linganore Water Treatment Plant can treat 2 mgd

Service Area: The New Design treatment plant serves unincorporated parts of southern and southeastern Frederick County not served by individual wells. The Lake Linganore treatment plant serves unincorporated parts of eastern Frederick County not served by wells.

Average demand: 3 mgd from the Potomac; 1.5 mgd from Lake Linganore

Number of Customers: 9,600

Read the Consumer Confidence Report-
Annual Water Quality Report

Town of Leesburg Department of Utilities
P.O. Box 88
Leesburg, VA 20178

Phone: 703-771-2709 (Office of Public Information)
Fax: 703-737-7111

Link to Leesburg's website

Potomac River: intake 30 miles upstream from Chain Bridge

Groundwater: Three town wells provide 25% of the water

Kenneth B. Rollins Water Treatment Plant on the Potomac, just east of town can treat up to 5 mgd and is in the process of expanding up to 10 mgd

Service Area: Town of Leesburg

Average Demand: 3.2 mgd
Maximum Daily Demand: 5.2 mgd

Number of Customers: 26-27,000

Consumer Confidence Report available in PDF format through the town's website or by calling 703-771-2750

City of Manassas Department of Utilities
8500 Public Works Drive
Manassas, VA 20110

Phone: 703-257-8380
Fax: 703-257-8361

Link to Manassas City's website

Lake Manassas: intake at T. Nelson Elliott Dam on Broad Run City of Manassas Water Treatment Plant can treat up to 14 mgd

Service Area: City of Manassas

Wholesale Customers: PWCSA, City of Manassas Park

Average Demand: 10.5 mgd
Maximum Daily Demand: 14 mgd

Number of Customers: >10,000

Read the Consumer Confidence Report on the web or call 703-257-8380 to get a copy

City of Rockville Department of Public Works
City Hall 111 Maryland Avenue
Rockville, MD 20850-2364

Phone: 240-314-8500
Fax:

Link to Rockville's website

Potomac River: intake 12 miles upstream from Chain Bridge Rockville Treatment Plant near Potomac, MD can treat 8 mgd, and 12 mgd are kept in storage

Service Area: 90% of the city of Rockville (the other 10% gets water from WSSC)

Average Demand: 5.3 mgd
Maximum Daily Demand: exceeding 10 mgd

Number of Customers: 50,000

Copies of the Consumer Confidence Report are available in city hall and will soon be posted on the city's website.

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