TERRACE SQUARE APTS
Washington - Community Water System - PWSID: FL6292099
System Information
| PWSID | FL6292099 |
| System Name | TERRACE SQUARE APTS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 04 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 29, 1981 |
| Last Reported | Feb 24, 2026 |
Location & Contact
| State | Washington |
| City | SAMMAMISH |
| ZIP Code | 98074 |
| Address | 501 234TH PLACE NORTHEAST |
| Organization | WOSHI TERRACE SQUARE APARTMENTS, LLC |
| Phone | 425-533-3890 |
Population & Service
| Population Served | 45 |
| Service Connections | 9 |
Drinking Water Violations (42)
This water system has 42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2023 | Dec 31, 2024 | MR | No | Yes | - | 0.060 mg/L | - | Archived | Dec 31, 2024 | - | |
| Jan 1, 2023 | Dec 31, 2024 | MR | No | Yes | - | 0.060 mg/L | - | Archived | Dec 31, 2024 | - | |
| Jan 1, 2023 | Dec 31, 2024 | MR | No | Yes | - | 0.060 mg/L | - | Archived | Dec 31, 2024 | - | |
| Jan 1, 2023 | Dec 31, 2024 | MR | No | Yes | - | 0.080 mg/L | - | Archived | Dec 31, 2024 | - | |
| Jan 1, 2023 | Dec 31, 2024 | MR | No | Yes | - | 0.080 mg/L | - | Archived | Dec 31, 2024 | - | |
| Jan 1, 2023 | Dec 31, 2024 | MR | No | Yes | - | 0.080 mg/L | - | Archived | Dec 31, 2024 | - | |
| Jan 1, 2020 | Dec 31, 2021 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2020 | Dec 31, 2021 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2020 | Dec 31, 2021 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2020 | Dec 31, 2021 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2021 | - | |
| Aug 1, 2012 | - | MR | No | Yes | - | - | - | Unaddressed | - | - | |
| Aug 1, 2012 | - | MR | No | Yes | - | - | - | Unaddressed | - | - | |
| Aug 1, 2012 | - | MR | No | Yes | - | - | - | Unaddressed | - | - | |
| Jun 1, 2012 | - | MR | No | Yes | - | - | - | Unaddressed | - | - | |
| Jun 1, 2012 | - | MR | No | Yes | - | - | - | Unaddressed | - | - | |
| Jun 1, 2012 | - | MR | No | Yes | - | - | - | Unaddressed | - | - | |
| Jun 1, 2012 | - | MR | No | Yes | - | - | - | Unaddressed | - | - | |
| Jul 1, 2008 | Jul 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2008 | - | |
| Jul 1, 2008 | Jul 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2008 | - | |
| Jul 1, 2002 | Aug 28, 2002 | Other | No | Yes | - | - | - | Resolved | Aug 28, 2002 | - | |
| Jul 1, 2002 | Aug 28, 2002 | Other | No | Yes | - | - | - | Resolved | Aug 28, 2002 | - | |
| Feb 1, 2002 | Feb 28, 2002 | MR | No | Yes | - | 5% of samples | - | Archived | Feb 28, 2002 | - | |
| Jul 1, 2001 | - | Other | No | No | - | - | - | Resolved | Apr 27, 2011 | - | |
| Jul 1, 2001 | - | Other | No | Yes | - | - | - | Unaddressed | - | - | |
| Aug 1, 2000 | Aug 31, 2000 | MR | No | Yes | - | 5% of samples | - | Archived | Aug 31, 2000 | - | |
| Feb 1, 2000 | Feb 29, 2000 | MR | No | Yes | - | 5% of samples | - | Archived | Feb 29, 2000 | - | |
| Nov 1, 1989 | Oct 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Archived | Oct 31, 1993 | - | |
| Mar 1, 1989 | Feb 28, 1993 | MR | No | Yes | - | 15 pCi/L | - | Archived | Feb 28, 1993 | - | |
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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.