OAK BLUFFS WATER DISTRICT
Massachusetts - Community Water System - PWSID: MA4221000
System Information
| PWSID | MA4221000 |
| System Name | OAK BLUFFS WATER DISTRICT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 26, 1979 |
| Last Reported | Mar 17, 2026 |
Location & Contact
| State | Massachusetts |
| City | OAK BLUFFS |
| ZIP Code | 02557 |
| Address | BOX 1297 |
| Organization | OAK BLUFFS WATER DISTRICT |
| Phone | 5086935527 |
Population & Service
| Population Served | 24,000 |
| Service Connections | 4,628 |
Drinking Water Violations (167)
This water system has 167 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, 2015 | - | Other | No | No | - | - | - | Resolved | Jul 13, 2015 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Jul 13, 2015 | - | |
| Aug 1, 2014 | Aug 31, 2014 | MR | No | No | - | 0.080 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Aug 1, 2014 | Aug 31, 2014 | MR | No | No | - | 0.080 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jun 1, 2013 | Jun 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2013 | - | |
| Jun 1, 2013 | Jun 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2013 | - | |
| May 1, 2013 | May 31, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2013 | - | |
| May 1, 2013 | May 31, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2013 | - | |
| 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 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 10 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.7 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.1 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.07 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 10 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.1 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Aug 22, 2011 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.002 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.6 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 1 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.7 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Aug 22, 2011 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.07 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.075 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.07 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.2 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.075 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.6 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.007 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.005 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.2 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.002 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.007 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 0.07 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 1 mg/L | - | Resolved | Dec 31, 2010 | - |
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.