MARIANI WATER SYSTEM INC
Washington — Community Water System — PWSID: WA5351675
System Information
| PWSID | WA5351675 |
| System Name | MARIANI WATER SYSTEM INC |
| 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 | Dec 30, 1986 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Black Diamond |
| ZIP Code | 98010 |
| Address | 32809 227th Pl SE |
| Organization | MARIANI WATER SYSTEM INC |
| Phone | — |
Population & Service
| Population Served | 138 |
| Service Connections | 49 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Feb 1, 1993 | Feb 28, 1993 | MR | No | Yes | — | 5% of samples | — | Archived | Feb 28, 1993 | — | |
| Oct 1, 1991 | Oct 31, 1991 | MR | No | No | — | 5% of samples | — | Archived | Oct 31, 1991 | — |
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.