BOSTON HARBOR
Washington — Community Water System — PWSID: WA5307850
System Information
| PWSID | WA5307850 |
| System Name | BOSTON HARBOR |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Olympia |
| ZIP Code | 98512 |
| Address | 9605 Tilley Rd. South |
| Organization | BOSTON HARBOR |
| Phone | — |
Population & Service
| Population Served | 1,153 |
| Service Connections | 278 |
Drinking Water Violations (62)
This water system has 62 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, 2025 | Sep 30, 2025 | MCL | Yes | No | 89.8 UG/L | 0.080 mg/L | — | Archived | Sep 30, 2025 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | 60.7 UG/L | 0.060 mg/L | — | Archived | Mar 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 95.3 UG/L | 0.080 mg/L | — | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 95.3 UG/L | 0.080 mg/L | — | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 95.3 UG/L | 0.080 mg/L | — | Resolved | Mar 31, 2017 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 85.1 UG/L | 0.080 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 85.1 UG/L | 0.080 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 85.1 UG/L | 0.080 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jul 1, 2016 | Sep 30, 2016 | MCL | Yes | No | 82.7 UG/L | 0.080 mg/L | — | Resolved | Sep 30, 2016 | — | |
| Jul 1, 2016 | — | Other | No | No | — | — | — | Resolved | Sep 29, 2016 | — | |
| Jul 1, 2016 | Sep 30, 2016 | MCL | Yes | No | 82.7 UG/L | 0.080 mg/L | — | Resolved | Sep 30, 2016 | — | |
| Jul 1, 2016 | Sep 30, 2016 | MCL | Yes | No | 82.7 UG/L | 0.080 mg/L | — | Resolved | Sep 30, 2016 | — | |
| Jul 1, 2015 | — | Other | No | No | — | — | — | Resolved | Aug 28, 2015 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2000 | — | MR | No | No | — | TT | — | Resolved | Jun 30, 2002 | — | |
| Nov 1, 1998 | Nov 30, 1998 | MR | No | Yes | — | 5% of samples | — | Archived | Nov 30, 1998 | — | |
| Jan 1, 1998 | Jan 1, 1999 | MR | No | No | — | TT | — | Resolved | Jan 1, 1999 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MR | No | Yes | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Dec 1, 1992 | Dec 31, 1992 | MR | No | Yes | — | 5% of samples | — | Archived | Dec 31, 1992 | — | |
| Nov 1, 1992 | Nov 30, 1992 | MR | No | Yes | — | 5% of samples | — | Archived | Nov 30, 1992 | — | |
| Oct 1, 1992 | Oct 31, 1992 | MR | No | Yes | — | 5% of samples | — | Archived | Oct 31, 1992 | — |
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.