UPPER TWIN LAKES WATER COMPANY INC
Idaho — Community Water System — PWSID: ID1280194
System Information
| PWSID | ID1280194 |
| System Name | UPPER TWIN LAKES WATER COMPANY 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 | Mar 13, 1980 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Idaho |
| City | RATHDRUM |
| ZIP Code | 83858 |
| Address | PO BOX 878 |
| Organization | MILLER, RENEE |
| Phone | 208-660-3103 |
Population & Service
| Population Served | 227 |
| Service Connections | 91 |
Drinking Water Violations (48)
This water system has 48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 30, 2025 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Oct 22, 2023 | — | TT | Yes | No | — | — | — | Resolved | Nov 10, 2023 | — | |
| Oct 22, 2023 | — | TT | Yes | No | — | — | — | Resolved | Nov 10, 2023 | — | |
| Oct 22, 2023 | — | TT | Yes | No | — | — | — | Resolved | Nov 10, 2023 | — | |
| Oct 1, 2020 | — | MR | No | No | — | TT | — | Resolved | May 20, 2025 | — | |
| Oct 1, 2020 | — | MR | No | No | — | TT | — | Resolved | May 20, 2025 | — | |
| Oct 1, 2020 | — | MR | No | No | — | TT | — | Resolved | May 20, 2025 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Oct 1, 2016 | Oct 31, 2016 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2016 | — | |
| Oct 1, 2016 | Oct 31, 2016 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2016 | — | |
| Oct 1, 2016 | Oct 31, 2016 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2016 | — | |
| Aug 1, 2012 | Aug 31, 2012 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2012 | — | |
| Jan 1, 2011 | — | MR | No | No | — | TT | — | Resolved | Jan 3, 2017 | — | |
| Jan 1, 2011 | — | MR | No | No | — | TT | — | Resolved | Jan 3, 2017 | — | |
| Jan 1, 2011 | — | MR | No | No | — | TT | — | Resolved | Jan 3, 2017 | — | |
| Jul 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Feb 28, 2019 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Feb 28, 2019 | — | |
| Jan 1, 2008 | — | MR | No | No | — | TT | — | Resolved | Aug 13, 2008 | — | |
| Jul 1, 2007 | Jul 31, 2007 | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 2007 | — | |
| Sep 1, 2003 | Sep 30, 2003 | MR | No | No | — | 5% of samples | — | Archived | Sep 30, 2003 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Feb 1, 2000 | Feb 29, 2000 | MCL | Yes | No | — | 5% of samples | — | Archived | Feb 29, 2000 | — | |
| Nov 1, 1999 | Nov 30, 1999 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1999 | — | |
| Oct 1, 1999 | Oct 31, 1999 | MR | No | No | — | 5% of samples | — | Archived | Oct 31, 1999 | — | |
| Sep 1, 1999 | Sep 30, 1999 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1999 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MCL | Yes | No | .48 | 0.010 mg/L | .05 | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1994 | Jun 30, 1994 | MR | No | No | — | TT | — | Resolved | Jun 30, 1994 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Jul 1, 1993 | Jul 31, 1993 | MR | No | Yes | — | 5% of samples | — | Archived | Jul 31, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.05 mg/L | — | Archived | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 4.0 mg/L | — | Archived | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 2 mg/L | — | Archived | Dec 31, 1995 | — | |
| — | — | — | 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.