SIERRA COUNTRY CLUB
Washington — Community Water System — PWSID: WA5378975
System Information
| PWSID | WA5378975 |
| System Name | SIERRA COUNTRY CLUB |
| 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 | Feb 7, 1981 |
| Last Reported | Dec 11, 2025 |
Location & Contact
| State | Washington |
| City | Coupeville |
| ZIP Code | 98239 |
| Address | 102 SW Terry Rd |
| Organization | SIERRA COUNTRY CLUB |
| Phone | — |
Population & Service
| Population Served | 400 |
| Service Connections | 234 |
Drinking Water Violations (14)
This water system has 14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2024 | Dec 31, 2024 | Total Haloacetic Acids (HAA5) | MCL | Yes | No | 61.1 UG/L | 0.060 mg/L | — | Archived | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 | Sep 30, 2024 | TTHM | MCL | Yes | No | 94.85 UG/L | 0.080 mg/L | — | Archived | Sep 30, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 | Sep 30, 2024 | Total Haloacetic Acids (HAA5) | MCL | Yes | No | 84.95 UG/L | 0.060 mg/L | — | Archived | Sep 30, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2024 | Jun 30, 2024 | TTHM | MCL | Yes | No | 229.3 UG/L | 0.080 mg/L | — | Archived | Jun 30, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2024 | Jun 30, 2024 | Total Haloacetic Acids (HAA5) | MCL | Yes | No | 115.9 UG/L | 0.060 mg/L | — | Archived | Jun 30, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Mar 31, 2024 | Total Haloacetic Acids (HAA5) | MCL | Yes | No | 117.6 UG/L | 0.060 mg/L | — | Archived | Mar 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Mar 31, 2024 | TTHM | MCL | Yes | No | 206.7 UG/L | 0.080 mg/L | — | Archived | Mar 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2023 | Dec 31, 2023 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2023 | Dec 31, 2023 | Total Haloacetic Acids (HAA5) | MCL | Yes | No | 117.6 UG/L | 0.060 mg/L | — | Archived | Dec 31, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2023 | Dec 31, 2023 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2023 | Dec 31, 2023 | TTHM | MCL | Yes | No | 206.7 UG/L | 0.080 mg/L | — | Archived | Dec 31, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2003 | Dec 31, 2003 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2003 | Nitrate Rule |
| Sep 1, 1993 | Sep 30, 1993 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Sep 30, 1993 | Total Coliform Rule |
| Oct 1, 1979 | Oct 31, 1979 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Oct 31, 1979 | Radionuclides and Revised Rad 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.