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 | Dec 19, 2025 |
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 (32)
This water system has 32 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 22, 2023 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Nov 10, 2023 | Revised Total Coliform Rule |
| Oct 22, 2023 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Nov 10, 2023 | Revised Total Coliform Rule |
| Oct 22, 2023 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Nov 10, 2023 | Revised Total Coliform Rule |
| Oct 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 20, 2025 | Lead and Copper Rule |
| Oct 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 20, 2025 | Lead and Copper Rule |
| Oct 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 20, 2025 | Lead and Copper Rule |
| Jan 1, 2018 | Dec 31, 2018 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | Nitrate Rule |
| Jan 1, 2018 | Dec 31, 2018 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | Nitrate Rule |
| Jan 1, 2018 | Dec 31, 2018 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | Nitrate Rule |
| Jan 1, 2018 | Dec 31, 2018 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | Nitrate Rule |
| Jan 1, 2018 | Dec 31, 2018 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | Nitrate Rule |
| Jan 1, 2018 | Dec 31, 2018 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | Nitrate Rule |
| Oct 1, 2016 | Oct 31, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2016 | Revised Total Coliform Rule |
| Oct 1, 2016 | Oct 31, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2016 | Revised Total Coliform Rule |
| Oct 1, 2016 | Oct 31, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2016 | Revised Total Coliform Rule |
| Jan 1, 2011 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 3, 2017 | Lead and Copper Rule |
| Jan 1, 2011 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 3, 2017 | Lead and Copper Rule |
| Jan 1, 2011 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 3, 2017 | Lead and Copper Rule |
| Jul 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 28, 2019 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 28, 2019 | Lead and Copper Rule |
| Jan 1, 2008 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 13, 2008 | Lead and Copper Rule |
| Jul 1, 2007 | Jul 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 2007 | Total Coliform Rule |
| Jan 1, 2001 | Dec 31, 2001 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | Nitrate Rule |
| Jan 1, 2001 | Dec 31, 2001 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | Nitrate Rule |
| Jan 1, 2001 | Dec 31, 2001 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | Nitrate Rule |
| Jan 1, 2001 | Dec 31, 2001 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | Nitrate Rule |
| Jan 1, 2001 | Dec 31, 2001 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | Nitrate Rule |
| Jan 1, 2001 | Dec 31, 2001 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | Nitrate Rule |
| Jan 1, 1999 | Dec 31, 2001 | Arsenic | MCL | Yes | No | .48 | 0.010 mg/L | .05 | Resolved | Dec 31, 2001 | Arsenic Rule |
| Jan 1, 1995 | Dec 31, 1995 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1995 | Nitrate Rule |
| Jan 1, 1994 | Jun 30, 1994 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 1994 | Lead and Copper Rule |
| Jan 1, 1993 | Dec 31, 1995 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 1995 | Nitrate 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.