ONSET FIRE DISTRICTWATER DEPT.
Massachusetts - Community Water System - PWSID: MA4310003
System Information
| PWSID | MA4310003 |
| System Name | ONSET FIRE DISTRICTWATER DEPT. |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 20, 1981 |
| Last Reported | Mar 17, 2026 |
Location & Contact
| State | Massachusetts |
| City | ONSET |
| ZIP Code | 02558 |
| Address | P.O. BOX 171 |
| Organization | ONSET FIRE DISTRICT-WATER DEPT. |
| Phone | 5082950603 |
Population & Service
| Population Served | 5,392 |
| Service Connections | 2,982 |
Drinking Water Violations (72)
This water system has 72 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, 2022 | - | Other | No | No | - | - | - | Resolved | Aug 15, 2022 | - | |
| Jul 1, 2022 | - | Other | No | No | - | - | - | Resolved | Aug 15, 2022 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 10 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.002 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.7 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.07 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.6 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.2 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.00005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.07 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.1 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.1 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.075 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.1 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 1 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.007 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.0002 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | No | - | 0.005 mg/L | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Mar 19, 2021 | - | |
| Oct 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Mar 19, 2021 | - | |
| May 1, 2019 | May 31, 2019 | MCL | Yes | No | - | - | - | Archived | May 31, 2019 | - | |
| Nov 1, 2013 | Nov 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2013 | - | |
| Nov 1, 2013 | Nov 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2013 | - | |
| Feb 1, 2013 | Feb 28, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2013 | - | |
| Feb 1, 2013 | Feb 28, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2013 | - | |
| Jan 1, 2013 | Jan 31, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 2013 | - | |
| Jan 1, 2013 | Jan 31, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 2013 | - | |
| Dec 1, 2012 | Dec 31, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| Dec 1, 2012 | Dec 31, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| Nov 1, 2012 | Nov 30, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2012 | - | |
| Nov 1, 2012 | Nov 30, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2012 | - | |
| Feb 1, 2012 | Feb 29, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 29, 2012 | - | |
| Feb 1, 2012 | Feb 29, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 29, 2012 | - | |
| Nov 1, 2011 | Nov 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2011 | - | |
| Nov 1, 2011 | Nov 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | Other | No | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | Other | No | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2009 | - | MR | No | No | - | TT | - | Resolved | Oct 10, 2010 | - | |
| Oct 1, 2009 | - | MR | No | No | - | TT | - | Resolved | Oct 10, 2010 | - | |
| Jan 1, 1998 | - | MR | No | No | - | TT | - | Resolved | Jun 26, 2001 | - | |
| Jan 1, 1998 | - | MR | No | No | - | TT | - | Resolved | Jun 26, 2001 | - |
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.