CLARENCE WATER SUPPLY
Iowa - Community Water System - PWSID: IA1630028
System Information
| PWSID | IA1630028 |
| System Name | CLARENCE WATER SUPPLY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 27, 1979 |
| Last Reported | Mar 17, 2026 |
Location & Contact
| State | Iowa |
| City | MECHANICSVILLE |
| ZIP Code | 52306 |
| Address | ATTN STEVE IHNS WATER SUPT |
| Organization | CLARENCE WATER SUPPLY |
| Phone | 563-452-3625 |
Population & Service
| Population Served | 1,039 |
| Service Connections | 502 |
Drinking Water Violations (73)
This water system has 73 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 1, 2017 | Dec 31, 2017 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2017 | - | |
| Dec 1, 2017 | Dec 31, 2017 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2017 | - | |
| Dec 1, 2017 | Dec 31, 2017 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2017 | - | |
| Dec 1, 2017 | Dec 31, 2017 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2017 | - | |
| Jul 1, 2017 | Jun 30, 2018 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 2018 | - | |
| Jul 1, 2017 | Jun 30, 2018 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 2018 | - | |
| Jul 1, 2017 | Jun 30, 2018 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 2018 | - | |
| Jul 1, 2017 | Jun 30, 2018 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 2018 | - | |
| Aug 1, 2006 | Aug 31, 2006 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2006 | - | |
| Aug 1, 2006 | Aug 31, 2006 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2006 | - | |
| Aug 1, 2006 | Aug 31, 2006 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2006 | - | |
| Aug 1, 2006 | Aug 31, 2006 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2006 | - | |
| May 1, 2001 | May 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2001 | - | |
| May 1, 2001 | May 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2001 | - | |
| May 1, 2001 | May 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2001 | - | |
| May 1, 2001 | May 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2001 | - | |
| May 1, 2001 | May 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2001 | - | |
| Jul 1, 2000 | Jun 30, 2001 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2001 | - | |
| Jul 1, 2000 | Jun 30, 2001 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2001 | - | |
| Jul 1, 2000 | Jun 30, 2001 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2001 | - | |
| Jul 1, 2000 | Jun 30, 2001 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2001 | - | |
| Jul 1, 2000 | Jun 30, 2001 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2001 | - | |
| Apr 1, 1999 | Apr 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1999 | - | |
| Apr 1, 1999 | Apr 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1999 | - | |
| Apr 1, 1999 | Apr 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1999 | - | |
| Apr 1, 1999 | Apr 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1999 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1996 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1996 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1996 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1996 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1995 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1995 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1995 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1995 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1995 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1995 | - | |
| Oct 1, 1990 | - | MR | No | No | - | TT | - | Resolved | Apr 1, 1991 | - | |
| Oct 1, 1990 | - | MR | No | No | - | TT | - | Resolved | Apr 1, 1991 | - | |
| Jan 1, 1990 | Dec 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1993 | - | |
| Jan 1, 1990 | Dec 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1993 | - | |
| Jan 1, 1990 | Dec 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1993 | - | |
| Jan 1, 1990 | Dec 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1993 | - | |
| Jan 1, 1990 | Dec 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1993 | - | |
| Jan 1, 1990 | Dec 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1993 | - | |
| Jan 1, 1990 | Dec 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1993 | - | |
| Jan 1, 1990 | Dec 31, 1993 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1993 | - | |
| Apr 1, 1988 | Mar 31, 1991 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Mar 31, 1991 | - |
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.