PORTSMOUTH WATER WORKS
New Hampshire - Community Water System - PWSID: NH1951010
System Information
| PWSID | NH1951010 |
| System Name | PORTSMOUTH WATER WORKS |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 8, 1979 |
| Last Reported | Feb 19, 2026 |
Location & Contact
| State | New Hampshire |
| City | PORTSMOUTH |
| ZIP Code | 03801 |
| Address | 680 PEVERLY HILL RD |
| Organization | PORTSMOUTH WATER WORKS |
| Phone | - |
Population & Service
| Population Served | 33,000 |
| Service Connections | 7,200 |
Drinking Water Violations (43)
This water system has 43 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2014 | Sep 30, 2014 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | - | Resolved | Sep 30, 2014 | - | |
| Jan 1, 2008 | Feb 1, 2008 | TT | Yes | No | - | - | - | Resolved | Feb 1, 2008 | - | |
| Jan 1, 2008 | Feb 1, 2008 | TT | Yes | No | - | - | - | Resolved | Feb 1, 2008 | - | |
| Jan 1, 2008 | Feb 1, 2008 | TT | Yes | No | - | - | - | Resolved | Feb 1, 2008 | - | |
| Jan 1, 2008 | Feb 1, 2008 | TT | Yes | No | - | - | - | Resolved | Feb 1, 2008 | - | |
| Mar 1, 2007 | Apr 1, 2007 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2007 | - | |
| Mar 1, 2007 | Apr 1, 2007 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2007 | - | |
| Mar 1, 2007 | Apr 1, 2007 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2007 | - | |
| Mar 1, 2007 | Apr 1, 2007 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2007 | - | |
| Jul 1, 2006 | Aug 1, 2006 | TT | Yes | No | - | - | - | Resolved | Aug 1, 2006 | - | |
| Jul 1, 2006 | Aug 1, 2006 | TT | Yes | No | - | - | - | Resolved | Aug 1, 2006 | - | |
| Jul 1, 2006 | Aug 1, 2006 | TT | Yes | No | - | - | - | Resolved | Aug 1, 2006 | - | |
| Jul 1, 2006 | Aug 1, 2006 | TT | Yes | No | - | - | - | Resolved | Aug 1, 2006 | - | |
| Oct 1, 2005 | Nov 1, 2005 | TT | Yes | No | - | - | - | Resolved | Nov 1, 2005 | - | |
| Oct 1, 2005 | Nov 1, 2005 | TT | Yes | No | - | - | - | Resolved | Nov 1, 2005 | - | |
| Oct 1, 2005 | Nov 1, 2005 | TT | Yes | No | - | - | - | Resolved | Nov 1, 2005 | - | |
| Oct 1, 2005 | Nov 1, 2005 | TT | Yes | No | - | - | - | Resolved | Nov 1, 2005 | - | |
| Oct 1, 2005 | Nov 1, 2005 | TT | Yes | No | - | - | - | Resolved | Nov 1, 2005 | - | |
| Oct 1, 2005 | Nov 1, 2005 | TT | Yes | No | - | - | - | Resolved | Nov 1, 2005 | - | |
| Oct 1, 2005 | Nov 1, 2005 | TT | Yes | No | - | - | - | Resolved | Nov 1, 2005 | - | |
| Oct 1, 2005 | Nov 1, 2005 | TT | Yes | No | - | - | - | Resolved | Nov 1, 2005 | - | |
| Apr 1, 2003 | Jun 30, 2003 | MCL | Yes | No | .067 | 0.060 mg/L | - | Resolved | Jun 30, 2003 | - | |
| Apr 1, 2003 | Jun 30, 2003 | MCL | Yes | No | .067 | 0.060 mg/L | - | Resolved | Jun 30, 2003 | - | |
| Apr 1, 2003 | Jun 30, 2003 | MCL | Yes | No | .067 | 0.060 mg/L | - | Resolved | Jun 30, 2003 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MCL | Yes | No | .089 | 0.080 mg/L | - | Resolved | Mar 31, 2003 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MCL | Yes | No | .089 | 0.060 mg/L | - | Resolved | Mar 31, 2003 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MCL | Yes | No | .089 | 0.080 mg/L | - | Resolved | Mar 31, 2003 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MCL | Yes | No | .089 | 0.080 mg/L | - | Resolved | Mar 31, 2003 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MCL | Yes | No | .089 | 0.060 mg/L | - | Resolved | Mar 31, 2003 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MCL | Yes | No | .089 | 0.060 mg/L | - | Resolved | Mar 31, 2003 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2001 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2001 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2001 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2001 | - | |
| Jul 1, 2001 | Jul 31, 2001 | TT | Yes | No | - | - | - | Resolved | Jul 31, 2001 | - | |
| Jul 1, 2001 | Jul 31, 2001 | TT | Yes | No | - | - | - | Resolved | Jul 31, 2001 | - | |
| Jul 1, 2001 | Jul 31, 2001 | TT | Yes | No | - | - | - | Resolved | Jul 31, 2001 | - | |
| Jul 1, 2001 | Jul 31, 2001 | TT | Yes | No | - | - | - | Resolved | Jul 31, 2001 | - | |
| Dec 1, 1998 | Dec 31, 1998 | TT | Yes | No | - | - | - | Resolved | Dec 31, 1998 | - | |
| Dec 1, 1998 | Dec 31, 1998 | TT | Yes | No | - | - | - | Resolved | Dec 31, 1998 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.