NORWALK WATER SUPPLY
Iowa — Community Water System — PWSID: IA9164078
System Information
| PWSID | IA9164078 |
| System Name | NORWALK WATER SUPPLY |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 27, 1979 |
| Last Reported | Dec 19, 2025 |
Location & Contact
| State | Iowa |
| City | NORWALK |
| ZIP Code | 50211-1417 |
| Address | ATTN WAYNE SCHWARTZ PW DIRECTOR |
| Organization | NORWALK WATER SUPPLY |
| Phone | 515-981-9527 |
Population & Service
| Population Served | 14,334 |
| Service Connections | 5,982 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 1, 2011 | Aug 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2011 | Total Coliform Rule |
| Aug 1, 2011 | Aug 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2011 | Total Coliform Rule |
| Aug 1, 2011 | Aug 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2011 | Total Coliform Rule |
| Oct 1, 2003 | Oct 31, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2003 | Total Coliform Rule |
| Oct 1, 2003 | Oct 31, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2003 | Total Coliform Rule |
| Oct 1, 2003 | Oct 31, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2003 | Total Coliform Rule |
| Oct 1, 2003 | Oct 31, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2003 | Total Coliform Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Aug 1, 2001 | Aug 31, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2001 | Total Coliform Rule |
| Aug 1, 2001 | Aug 31, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2001 | Total Coliform Rule |
| Aug 1, 2001 | Aug 31, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2001 | Total Coliform Rule |
| Aug 1, 2001 | Aug 31, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2001 | Total Coliform Rule |
| Dec 1, 1999 | Dec 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1999 | Total Coliform Rule |
| Dec 1, 1999 | Dec 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1999 | Total Coliform Rule |
| Dec 1, 1999 | Dec 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1999 | Total Coliform Rule |
| Dec 1, 1999 | Dec 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1999 | Total Coliform Rule |
| Jul 1, 1993 | Jul 31, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 1993 | Total Coliform Rule |
| Jul 1, 1993 | Jul 31, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 1993 | Total Coliform Rule |
| Oct 1, 1990 | Oct 31, 1990 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1990 | Total Coliform Rule |
| Oct 1, 1990 | Oct 31, 1990 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1990 | Total Coliform Rule |
| Oct 1, 1990 | Oct 31, 1990 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1990 | Total Coliform Rule |
| Oct 1, 1990 | Oct 31, 1990 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1990 | Total Coliform Rule |
| Oct 1, 1990 | Oct 31, 1990 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1990 | Total Coliform Rule |
| Oct 1, 1990 | Oct 31, 1990 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1990 | Total Coliform Rule |
| Oct 1, 1990 | Oct 31, 1990 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1990 | Total Coliform Rule |
| Oct 1, 1990 | Oct 31, 1990 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1990 | Total Coliform Rule |
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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.