Public water system
Portsmouth Water Works
PWSID NH1951010 - Rockingham County, New Hampshire
126 PPM
7.4 GPG
Moderately Hard0Soft60120180300+
Moderately Hard (126 PPM)High Confidence - USGS Monitoring
System Details
- Water source
- surface water
- Population served
- 33,000
- Service connections
- 7,200
- Status
- Active
Hardness Evidence
- Reported hardness
- 126 PPM
- Grains per gallon
- 7.4 GPG
- Data source
- USGS monitoring
- Source year
- N/A
Linked City Reports
Auburn, NHCandia, NHChester, NHDeerfield, NHDerry, NHEpping, NHFremont, NHLondonderry, NHRaymond, NHSalem, NHWindham, NHNorthwood, NHNottingham, NHWest Nottingham, NHNewington, NHAtkinson, NHDanville, NHEast Hampstead, NHSouth Hampton, NHBrentwood, NHGreenland, NHHampstead, NHHampton, NHHampton Falls, NHKingston, NHNew Castle, NHNewfields, NHNewmarket, NHNewton, NHNorth Hampton, NHPlaistow, NHRye, NHSandown, NHSeabrook, NHStratham, NH
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 03032 | Auburn, NH | Slightly Hard (107 PPM) |
| 03034 | Candia, NH | Slightly Hard (107 PPM) |
| 03036 | Chester, NH | Slightly Hard (107 PPM) |
| 03037 | Deerfield, NH | Slightly Hard (107 PPM) |
| 03038 | Derry, NH | Slightly Hard (105 PPM) |
| 03042 | Epping, NH | Slightly Hard (108 PPM) |
| 03044 | Fremont, NH | Slightly Hard (107 PPM) |
| 03053 | Londonderry, NH | Slightly Hard (105 PPM) |
| 03077 | Raymond, NH | Slightly Hard (104 PPM) |
| 03079 | Salem, NH | Slightly Hard (107 PPM) |
| 03087 | Windham, NH | Slightly Hard (107 PPM) |
| 03261 | Northwood, NH | Slightly Hard (106 PPM) |
| 03290 | Nottingham, NH | Slightly Hard (107 PPM) |
| 03291 | West Nottingham, NH | Slightly Hard (107 PPM) |
| 03801 | Newington, NH | Slightly Hard (110 PPM) |
| 03811 | Atkinson, NH | Slightly Hard (107 PPM) |
| 03819 | Danville, NH | Slightly Hard (107 PPM) |
| 03826 | East Hampstead, NH | Slightly Hard (106 PPM) |
| 03827 | South Hampton, NH | Slightly Hard (107 PPM) |
| 03833 | Brentwood, NH | Slightly Hard (109 PPM) |
| 03840 | Greenland, NH | Slightly Hard (107 PPM) |
| 03841 | Hampstead, NH | Slightly Hard (105 PPM) |
| 03842 | Hampton, NH | Slightly Hard (107 PPM) |
| 03844 | Hampton Falls, NH | Slightly Hard (107 PPM) |
| 03848 | Kingston, NH | Slightly Hard (107 PPM) |
| 03854 | New Castle, NH | Slightly Hard (107 PPM) |
| 03856 | Newfields, NH | Slightly Hard (107 PPM) |
| 03857 | Newmarket, NH | Slightly Hard (109 PPM) |
| 03858 | Newton, NH | Slightly Hard (107 PPM) |
| 03862 | North Hampton, NH | Slightly Hard (107 PPM) |
| 03865 | Plaistow, NH | Slightly Hard (107 PPM) |
| 03870 | Rye, NH | Slightly Hard (108 PPM) |
| 03873 | Sandown, NH | Slightly Hard (107 PPM) |
| 03874 | Seabrook, NH | Slightly Hard (107 PPM) |
| 03885 | Stratham, NH | Slightly Hard (107 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.