GROTTO WATER ASSOCIATION
Washington - Community Water System - PWSID: WA5330050
System Information
| PWSID | WA5330050 |
| System Name | GROTTO 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 | SKYKOMISH |
| ZIP Code | 98288 |
| Address | PO BOX 249 |
| Organization | GROTTO WATER ASSOCIATION |
| Phone | - |
Population & Service
| Population Served | 36 |
| Service Connections | 26 |
Drinking Water Violations (55)
This water system has 55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Feb 9, 2018 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Resolved | Dec 16, 2013 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2004 | Oct 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2004 | - | |
| Oct 1, 2004 | Oct 31, 2004 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 2004 | - | |
| May 1, 2000 | May 31, 2000 | MR | No | Yes | - | 5% of samples | - | Archived | May 31, 2000 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MR | No | Yes | - | 5% of samples | - | Archived | Aug 31, 1998 | - | |
| Apr 1, 1998 | Apr 30, 1998 | MR | No | Yes | - | 5% of samples | - | Archived | Apr 30, 1998 | - | |
| Mar 1, 1998 | Mar 31, 1998 | MR | No | Yes | - | 5% of samples | - | Archived | Mar 31, 1998 | - | |
| Jan 1, 1998 | Apr 1, 1999 | MR | No | No | - | TT | - | Resolved | Apr 1, 1999 | - | |
| May 1, 1997 | May 31, 1997 | MR | No | Yes | - | 5% of samples | - | Archived | May 31, 1997 | - | |
| May 1, 1997 | May 31, 1997 | MR | No | Yes | - | 5% of samples | - | Archived | May 31, 1997 | - | |
| Mar 1, 1997 | Mar 31, 1997 | MR | No | Yes | - | 5% of samples | - | Archived | Mar 31, 1997 | - | |
| Mar 1, 1997 | Mar 31, 1997 | MR | No | Yes | - | 5% of samples | - | Archived | Mar 31, 1997 | - | |
| Jan 1, 1997 | Jan 31, 1997 | MR | No | Yes | - | 5% of samples | - | Archived | Jan 31, 1997 | - | |
| Jan 1, 1997 | Jan 31, 1997 | MR | No | Yes | - | 5% of samples | - | Archived | Jan 31, 1997 | - | |
| Dec 1, 1996 | Dec 31, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | Dec 31, 1996 | - | |
| Dec 1, 1996 | Dec 31, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | Dec 31, 1996 | - | |
| Jun 1, 1996 | Jun 30, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | Jun 30, 1996 | - | |
| Jun 1, 1996 | Jun 30, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | Jun 30, 1996 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | May 31, 1996 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | May 31, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | Apr 30, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | Apr 30, 1996 | - | |
| Dec 1, 1995 | Dec 31, 1995 | MR | No | Yes | - | 5% of samples | - | Archived | Dec 31, 1995 | - | |
| Dec 1, 1995 | Dec 31, 1995 | MR | No | Yes | - | 5% of samples | - | Archived | Dec 31, 1995 | - | |
| Aug 1, 1992 | Aug 31, 1992 | MR | No | Yes | - | 5% of samples | - | Archived | Aug 31, 1992 | - | |
| 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 | - | 10 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 | - | 0.1 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 | - | 0.010 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 | - | 0.002 mg/L | - | Archived | Oct 31, 1979 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 2 mg/L | - | Archived | Oct 31, 1979 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.