LONE ROCK WATERWORKS
Wisconsin — Community Water System — PWSID: WI1530061
System Information
| PWSID | WI1530061 |
| System Name | LONE ROCK WATERWORKS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 28, 1981 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Wisconsin |
| City | LONE ROCK |
| ZIP Code | 53556-0338 |
| Address | 314 E FOREST ST |
| Organization | MARSHALL, ESTHER - TREASURER |
| Phone | — |
Population & Service
| Population Served | 895 |
| Service Connections | 267 |
Drinking Water Violations (52)
This water system has 52 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 1, 2023 | Oct 31, 2023 | MR | No | Yes | — | 10 mg/L | — | Resolved | Oct 31, 2023 | — | |
| Oct 1, 2023 | Oct 31, 2023 | MR | No | Yes | — | 10 mg/L | — | Resolved | Oct 31, 2023 | — | |
| Oct 1, 2023 | Oct 31, 2023 | MR | No | Yes | — | 10 mg/L | — | Resolved | Oct 31, 2023 | — | |
| Oct 1, 2023 | Oct 31, 2023 | MR | No | Yes | — | 10 mg/L | — | Resolved | Oct 31, 2023 | — | |
| Feb 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Mar 3, 2021 | — | |
| Feb 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Mar 3, 2021 | — | |
| Nov 1, 2020 | — | TT | Yes | No | — | TT | — | Resolved | Mar 1, 2021 | — | |
| Nov 1, 2020 | — | TT | Yes | No | — | TT | — | Resolved | Mar 1, 2021 | — | |
| Nov 1, 2020 | — | TT | Yes | No | — | TT | — | Resolved | Mar 1, 2021 | — | |
| Nov 1, 2020 | — | TT | Yes | No | — | TT | — | Resolved | Mar 1, 2021 | — | |
| Feb 1, 2016 | Feb 29, 2016 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 29, 2016 | — | |
| Feb 1, 2016 | Feb 29, 2016 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 29, 2016 | — | |
| Feb 1, 2016 | Feb 29, 2016 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 29, 2016 | — | |
| Feb 1, 2016 | Feb 29, 2016 | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 29, 2016 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 13, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 13, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 13, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 13, 2015 | — | |
| Jul 1, 2012 | — | Other | No | No | — | — | — | Resolved | Jul 19, 2012 | — | |
| May 1, 2012 | May 31, 2012 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2012 | — | |
| May 1, 2012 | May 31, 2012 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2012 | — | |
| May 1, 2012 | May 31, 2012 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2012 | — | |
| May 1, 2012 | May 31, 2012 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2012 | — | |
| Apr 1, 2012 | Apr 30, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2012 | — | |
| Apr 1, 2012 | Apr 30, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2012 | — | |
| Apr 1, 2012 | Apr 30, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2012 | — | |
| Apr 1, 2012 | Apr 30, 2012 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2012 | — | |
| Jan 1, 2012 | — | MR | No | No | — | TT | — | Resolved | Mar 8, 2012 | — | |
| Jan 1, 2009 | Mar 31, 2009 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2009 | — | |
| Jan 1, 2009 | Mar 31, 2009 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2009 | — | |
| Jan 1, 2009 | Mar 31, 2009 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2009 | — | |
| Jan 1, 2009 | Mar 31, 2009 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2009 | — | |
| Jul 1, 2001 | Jul 31, 2001 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2001 | — | |
| Jul 1, 2001 | Jul 31, 2001 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2001 | — | |
| Jul 1, 2001 | Jul 31, 2001 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2001 | — | |
| Jul 1, 2001 | Jul 31, 2001 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2001 | — | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1994 | Dec 31, 1994 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1994 | Dec 31, 1994 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1994 | Dec 31, 1994 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1994 | Dec 31, 1994 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1994 | Dec 31, 1994 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1994 | Dec 31, 1994 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1994 | Dec 31, 1994 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1994 | Dec 31, 1994 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1994 | — | |
| Jul 1, 1993 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 1993 | — | |
| Jul 1, 1993 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 1993 | — | |
| Jul 1, 1993 | Feb 8, 1994 | MR | No | No | — | TT | — | Resolved | Feb 8, 1994 | — |
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.