INDIAN RIDGE WATER ASSOCIATION
Washington - Community Water System - PWSID: WA5335639
System Information
| PWSID | WA5335639 |
| System Name | INDIAN RIDGE WATER ASSOCIATION |
| 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 | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Maple Valley |
| ZIP Code | 98038 |
| Address | 28620 Maple Valley Black Diamond Rd SE |
| Organization | INDIAN RIDGE WATER ASSOCIATION |
| Phone | - |
Population & Service
| Population Served | 216 |
| Service Connections | 88 |
Drinking Water Violations (41)
This water system has 41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 1, 2025 | Aug 31, 2025 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2025 | - | |
| Jan 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Aug 12, 2024 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Sep 14, 2015 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Resolved | Dec 2, 2013 | - | |
| Jul 1, 2012 | - | Other | No | No | - | - | - | Resolved | Oct 24, 2012 | - | |
| Jul 1, 2011 | - | Other | No | No | - | - | - | Resolved | Nov 7, 2011 | - | |
| Jul 1, 2010 | - | Other | No | No | - | - | - | Resolved | Oct 28, 2010 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Oct 19, 1999 | Dec 31, 1999 | Other | No | Yes | - | - | - | Resolved | Dec 31, 1999 | - | |
| Nov 1, 1997 | Nov 30, 1997 | MR | No | Yes | - | 5% of samples | - | Archived | Nov 30, 1997 | - | |
| Jul 1, 1997 | Oct 1, 2000 | MR | No | No | - | TT | - | Resolved | Oct 1, 2000 | - | |
| Oct 1, 1992 | Oct 31, 1992 | MR | No | Yes | - | 5% of samples | - | Archived | Oct 31, 1992 | - | |
| Aug 1, 1992 | Aug 31, 1992 | MR | No | No | - | 5% of samples | - | Archived | Aug 31, 1992 | - | |
| Jul 1, 1992 | Jul 31, 1992 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1992 | - | |
| Apr 1, 1992 | Apr 30, 1992 | MR | No | Yes | - | 5% of samples | - | Archived | Apr 30, 1992 | - | |
| Nov 1, 1991 | Nov 30, 1991 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 1991 | - | |
| Oct 1, 1991 | Oct 31, 1991 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1991 | - | |
| Oct 1, 1991 | Oct 31, 1991 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 1991 | - | |
| Oct 1, 1991 | Oct 31, 1991 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1991 | - | |
| Oct 1, 1991 | Oct 31, 1991 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1991 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 0.002 mg/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 0.1 mg/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 15 pCi/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 0.05 mg/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 0.010 mg/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 0.005 mg/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 2 mg/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 4.0 mg/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 10 mg/L | - | Archived | Oct 31, 1979 | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.