WATERLOO WATER WORKS
Iowa - Community Water System - PWSID: IA0790074
System Information
| PWSID | IA0790074 |
| System Name | WATERLOO WATER WORKS |
| 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 | WATERLOO |
| ZIP Code | 50704-0027 |
| Address | ATTN TRAVIS LARSON WATER PROD MANAGER |
| Organization | WATERLOO WATER WORKS |
| Phone | 319-232-6280 |
Population & Service
| Population Served | 69,504 |
| Service Connections | 27,430 |
Drinking Water Violations (67)
This water system has 67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2015 | Nov 30, 2015 | MCL | Yes | No | 10.7 MG/L | 10 mg/L | - | Resolved | Nov 30, 2015 | - | |
| Nov 1, 2015 | Nov 30, 2015 | MCL | Yes | No | 10.7 MG/L | 10 mg/L | - | Resolved | Nov 30, 2015 | - | |
| Nov 1, 2015 | Nov 30, 2015 | MCL | Yes | No | 10.7 MG/L | 10 mg/L | - | Resolved | Nov 30, 2015 | - | |
| Nov 1, 2015 | Nov 30, 2015 | MCL | Yes | No | 10.7 MG/L | 10 mg/L | - | Resolved | Nov 30, 2015 | - | |
| Jun 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 1, 2008 | - | |
| Jun 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 1, 2008 | - | |
| Jun 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 1, 2008 | - | |
| Jun 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 1, 2008 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | 10.6 | 10 mg/L | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | 10.6 | 10 mg/L | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | 10.6 | 10 mg/L | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | 10.6 | 10 mg/L | - | Resolved | Aug 31, 2005 | - | |
| 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, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Jul 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 1993 | - | |
| Feb 1, 1992 | Feb 29, 1992 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 29, 1992 | - | |
| Feb 1, 1992 | Feb 29, 1992 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 29, 1992 | - | |
| Feb 1, 1992 | Feb 29, 1992 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 29, 1992 | - | |
| Feb 1, 1992 | Feb 29, 1992 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 29, 1992 | - | |
| Jan 1, 1992 | Jun 30, 1992 | MR | No | No | - | TT | - | Archived | Jun 30, 1992 | - | |
| Jan 1, 1992 | Jun 30, 1992 | MR | No | No | - | TT | - | Archived | Jun 30, 1992 | - | |
| Jan 1, 1992 | Jun 30, 1992 | MR | No | No | - | TT | - | Resolved | Jun 1, 1992 | - | |
| Jan 1, 1992 | Jun 30, 1992 | MR | No | No | - | TT | - | Archived | Jun 30, 1992 | - |
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.