AP WILLIAMS
Montana - Community Water System - PWSID: MT0001671
System Information
| PWSID | MT0001671 |
| System Name | AP WILLIAMS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 5, 1980 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | KALISPELL |
| ZIP Code | 59903 |
| Address | PO BOX 1139 |
| Organization | WILLIAMS LLC, AP |
| Phone | 406-393-2127 |
Population & Service
| Population Served | 280 |
| Service Connections | 54 |
Drinking Water Violations (44)
This water system has 44 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, 2022 | - | Other | No | No | - | - | - | Resolved | Jul 6, 2022 | - | |
| Jul 1, 2022 | - | Other | No | No | - | - | - | Resolved | Jul 6, 2022 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2019 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2019 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2019 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2019 | - | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2003 | - | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2003 | - | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2003 | - | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2003 | - | |
| Dec 1, 2000 | Dec 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2000 | - | |
| Dec 1, 2000 | Dec 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2000 | - | |
| Dec 1, 2000 | Dec 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2000 | - | |
| Jul 1, 1997 | Jul 31, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 1997 | - | |
| Jan 1, 1996 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2000 | - | |
| Jun 1, 1994 | Jun 30, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 1994 | - | |
| Jul 1, 1993 | - | MR | No | No | - | TT | - | Resolved | Dec 3, 1996 | - | |
| Jul 1, 1993 | - | MR | No | No | - | TT | - | Resolved | Dec 3, 1996 | - | |
| Aug 1, 1992 | Aug 31, 1992 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 1992 | - | |
| Jul 1, 1992 | Jul 31, 1992 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 1992 | - | |
| May 1, 1992 | May 31, 1992 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1992 | - | |
| May 1, 1992 | May 31, 1992 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1992 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Sep 30, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 2 mg/L | - | Archived | Sep 30, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 0.010 mg/L | - | Archived | Sep 30, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 10 mg/L | - | Archived | Sep 30, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 0.05 mg/L | - | Archived | Sep 30, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Sep 30, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Sep 30, 1982 | - | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Jul 23, 1981 | - | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Jul 23, 1981 | - | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | - | 10 mg/L | - | Archived | Jul 23, 1981 | - | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | - | 0.05 mg/L | - | Archived | Jul 23, 1981 | - | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Jul 23, 1981 | - | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | - | 0.010 mg/L | - | Archived | Jul 23, 1981 | - | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | - | 2 mg/L | - | Archived | Jul 23, 1981 | - | |
| Jun 24, 1981 | Jul 23, 1981 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Jul 23, 1981 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.