Sundquist TWH-Terrace Heights
Washington — Community Water System — PWSID: WA53AD423
System Information
| PWSID | WA53AD423 |
| System Name | Sundquist TWH-Terrace Heights |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jun 28, 2017 |
| Last Reported | Dec 11, 2025 |
Location & Contact
| State | Washington |
| City | Yakima |
| ZIP Code | 98901 |
| Address | PO Box 1308 |
| Organization | Sundquist TWH-Terrace Heights |
| Phone | — |
Population & Service
| Population Served | 192 |
| Service Connections | 1 |
Drinking Water Violations (3)
This water system has 3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2019 | Sep 30, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Sep 30, 2019 | Revised Total Coliform Rule |
| Aug 1, 2019 | Aug 31, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Aug 31, 2019 | Revised Total Coliform Rule |
| Jul 1, 2018 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Oct 17, 2019 | Lead and Copper Rule |
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.