Public water system
Washington Suburban Sanitary Commission
PWSID MD0150005 - Montgomery County, Maryland
120 PPM
7 GPG
Moderately Hard0Soft60120180300+
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
Glen Echo, MDBethesda, MDChevy Chase, MDWest Bethesda, MDCabin John, MDOlney, MDBrookeville, MDPoolesville, MDBarnesville, MDBeallsville, MDBoyds, MDDickerson, MDRockville, MDPotomac, MDDerwood, MDSandy Spring, MDAshton, MDBrinklow, MDBurtonsville, MDSpencerville, MDClarksburg, MDDamascus, MDDarnestown, MDGermantown, MDGaithersburg, MDLaytonsville, MDWashington Grove, MDKensington, MDGarrett Park, MDSilver Spring, MDWheaton, MDColesville, MDAspen Hill, MDTakoma Park, MD
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 20812 | Glen Echo, MD | Moderately Hard (120 PPM) |
| 20814 | Bethesda, MD | Moderately Hard (120 PPM) |
| 20815 | Chevy Chase, MD | Moderately Hard (120 PPM) |
| 20816 | Bethesda, MD | Moderately Hard (120 PPM) |
| 20817 | West Bethesda, MD | Moderately Hard (120 PPM) |
| 20818 | Cabin John, MD | Moderately Hard (120 PPM) |
| 20832 | Olney, MD | Moderately Hard (120 PPM) |
| 20833 | Brookeville, MD | Moderately Hard (120 PPM) |
| 20837 | Poolesville, MD | Moderately Hard (120 PPM) |
| 20838 | Barnesville, MD | Moderately Hard (120 PPM) |
| 20839 | Beallsville, MD | Moderately Hard (120 PPM) |
| 20841 | Boyds, MD | Moderately Hard (120 PPM) |
| 20842 | Dickerson, MD | Moderately Hard (120 PPM) |
| 20850 | Rockville, MD | Moderately Hard (120 PPM) |
| 20851 | Rockville, MD | Moderately Hard (120 PPM) |
| 20852 | Rockville, MD | Moderately Hard (120 PPM) |
| 20853 | Rockville, MD | Moderately Hard (120 PPM) |
| 20854 | Potomac, MD | Moderately Hard (120 PPM) |
| 20855 | Derwood, MD | Moderately Hard (120 PPM) |
| 20860 | Sandy Spring, MD | Moderately Hard (120 PPM) |
| 20861 | Ashton, MD | Moderately Hard (120 PPM) |
| 20862 | Brinklow, MD | Moderately Hard (120 PPM) |
| 20866 | Burtonsville, MD | Moderately Hard (120 PPM) |
| 20868 | Spencerville, MD | Moderately Hard (120 PPM) |
| 20871 | Clarksburg, MD | Moderately Hard (120 PPM) |
| 20872 | Damascus, MD | Moderately Hard (120 PPM) |
| 20874 | Darnestown, MD | Moderately Hard (120 PPM) |
| 20876 | Germantown, MD | Moderately Hard (120 PPM) |
| 20877 | Gaithersburg, MD | Moderately Hard (120 PPM) |
| 20878 | Darnestown, MD | Moderately Hard (120 PPM) |
| 20879 | Laytonsville, MD | Moderately Hard (120 PPM) |
| 20880 | Washington Grove, MD | Moderately Hard (120 PPM) |
| 20882 | Laytonsville, MD | Moderately Hard (120 PPM) |
| 20886 | Gaithersburg, MD | Moderately Hard (120 PPM) |
| 20895 | Kensington, MD | Moderately Hard (120 PPM) |
| 20896 | Garrett Park, MD | Moderately Hard (120 PPM) |
| 20901 | Silver Spring, MD | Moderately Hard (120 PPM) |
| 20902 | Wheaton, MD | Moderately Hard (120 PPM) |
| 20903 | Silver Spring, MD | Moderately Hard (120 PPM) |
| 20904 | Colesville, MD | Moderately Hard (120 PPM) |
| 20905 | Colesville, MD | Moderately Hard (120 PPM) |
| 20906 | Aspen Hill, MD | Moderately Hard (120 PPM) |
| 20910 | Silver Spring, MD | Moderately Hard (120 PPM) |
| 20912 | Takoma Park, MD | Moderately 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.