Public water system
Greenridge Subdivision
PWSID MD0120011 - Harford County, Maryland
127 PPM
7.4 GPG
Moderately Hard0Soft60120180300+
Moderately Hard (127 PPM)High Confidence - USGS Monitoring
System Details
- Water source
- surface water
- Population served
- 2,271
- Service connections
- 845
- Status
- Active
Hardness Evidence
- Reported hardness
- 127 PPM
- Grains per gallon
- 7.4 GPG
- Data source
- USGS monitoring
- Source year
- N/A
Linked City Reports
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 20754 | Dunkirk, MD | Moderately Hard (127 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.