Public water system

Washington Suburban Sanitary Commission

PWSID MD0150005 - Montgomery County, Maryland

120 PPM
7 GPG
Moderately Hard
0Soft60120180300+
Moderately Hard (120 PPM)Verified - Annual Water Quality Report

System Details

Water source
surface water
Population served
1,900,000
Service connections
438,639
Status
Active

Hardness Evidence

Reported hardness
120 PPM
Grains per gallon
7 GPG
Data source
Annual Water Quality Report
Source year
N/A
Raw/source estimate
151 PPM

Linked City Reports

Served ZIP Codes

ZIPLocationZIP average
20812Glen Echo, MDModerately Hard (120 PPM)
20814Bethesda, MDModerately Hard (120 PPM)
20815Chevy Chase, MDModerately Hard (120 PPM)
20816Bethesda, MDModerately Hard (120 PPM)
20817West Bethesda, MDModerately Hard (120 PPM)
20818Cabin John, MDModerately Hard (120 PPM)
20832Olney, MDModerately Hard (120 PPM)
20833Brookeville, MDModerately Hard (120 PPM)
20837Poolesville, MDModerately Hard (120 PPM)
20838Barnesville, MDModerately Hard (120 PPM)
20839Beallsville, MDModerately Hard (120 PPM)
20841Boyds, MDModerately Hard (120 PPM)
20842Dickerson, MDModerately Hard (120 PPM)
20850Rockville, MDModerately Hard (120 PPM)
20851Rockville, MDModerately Hard (120 PPM)
20852Rockville, MDModerately Hard (120 PPM)
20853Rockville, MDModerately Hard (120 PPM)
20854Potomac, MDModerately Hard (120 PPM)
20855Derwood, MDModerately Hard (120 PPM)
20860Sandy Spring, MDModerately Hard (120 PPM)
20861Ashton, MDModerately Hard (120 PPM)
20862Brinklow, MDModerately Hard (120 PPM)
20866Burtonsville, MDModerately Hard (120 PPM)
20868Spencerville, MDModerately Hard (120 PPM)
20871Clarksburg, MDModerately Hard (120 PPM)
20872Damascus, MDModerately Hard (120 PPM)
20874Darnestown, MDModerately Hard (120 PPM)
20876Germantown, MDModerately Hard (120 PPM)
20877Gaithersburg, MDModerately Hard (120 PPM)
20878Darnestown, MDModerately Hard (120 PPM)
20879Laytonsville, MDModerately Hard (120 PPM)
20880Washington Grove, MDModerately Hard (120 PPM)
20882Laytonsville, MDModerately Hard (120 PPM)
20886Gaithersburg, MDModerately Hard (120 PPM)
20895Kensington, MDModerately Hard (120 PPM)
20896Garrett Park, MDModerately Hard (120 PPM)
20901Silver Spring, MDModerately Hard (120 PPM)
20902Wheaton, MDModerately Hard (120 PPM)
20903Silver Spring, MDModerately Hard (120 PPM)
20904Colesville, MDModerately Hard (120 PPM)
20905Colesville, MDModerately Hard (120 PPM)
20906Aspen Hill, MDModerately Hard (120 PPM)
20910Silver Spring, MDModerately Hard (120 PPM)
20912Takoma Park, MDModerately Hard (120 PPM)

How to Use This System Page

A public water system can serve multiple ZIP codes and cities. Use this page to inspect the source behind the hardness reading, then open the linked ZIP or city page for the local rollup.

If you are sizing treatment equipment, confirm your actual tap hardness with a home test or lab test before buying.