Iowa Water Systems
1,078 community water systems in Iowa, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).
Iowa community water systems are regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act; each utility files compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency directly. PlainEnviro's health-based SDWIS extract above counts health-based exceedances only -- monitoring and reporting violations are not present in these figures.
Violation counts reflect both infrastructure realities and reporting diligence, a state with more small rural systems will accumulate more monitoring-type violations without necessarily delivering worse water. Health-based violations are the stronger safety signal. A past violation does not itself indicate current unsafe water; utilities must notify customers, remediate, and publish an annual Consumer Confidence Report. All numbers below draw directly from the federal SDWIS record.
Which water systems have violations? (62)
Systems with No Violations (438)
438 water systems in Iowa have zero recorded violations. Showing the 50 largest by population served.
All Water Systems in Iowa (1,078)
Page 22 of 22, ordered by population served.
| System | Population Served | Violations |
|---|---|---|
| CHESTNUT RIDGE | 33 | 1 |
| KURTH ADDITION | 33 | 0 |
| BEREA HEIGHTS INC | 33 | 0 |
| ACE MOBILE HOME PARK | 32 | 0 |
| DORELL DRIVE HOME OWNERS ASSOCIATION | 32 | 0 |
| PLANTATION COUNTRY VIEW SUBDIVISION | 32 | 2 |
| RODMAN WATER SYSTEM | 31 | 0 |
| KAUTHS OAK VALLEY HOA 2ND ADDITION | 31 | 0 |
| STEAMBOAT ASSOCIATION | 29 | 0 |
| JOLLEY WATER SUPPLY | 28 | 0 |
| POLK AVENUE WATER ASSOCIATION | 28 | 0 |
| DEERFIELD HEIGHTS ASSOCIATION | 28 | 0 |
| SCENIC ACRES | 27 | 0 |
| STONEY POINTE SUBDIVISION | 27 | 0 |
| CENTRAL WATER WORKS | 27 | 1 |
| HILLTOP FARMS #3RD ADDITION | 26 | 0 |
| TERRY WATER ASSOCIATION | 25 | 0 |
| YANKEE GROVE PART 3 | 25 | 0 |
| WALTERS MOBILE HOME PARK | 25 | 0 |
| CARDINAL VALLEY ESTATES 3RD ADDITION | 25 | 0 |
| CENTRAL WATER SYSTEM | 25 | 0 |
| CHAIN RIDGE SUBDIVISION | 25 | 0 |
| MCBRIDE POINTE THIRD MASTER MAINTENANCE | 25 | 51 |
| CIWW (DMWW) | 25 | 0 |
| CIWW (GRIMES) | 25 | 0 |
| CIWW ( POLK CITY) | 25 | 0 |
| CIWW (WDMWW) | 25 | 0 |
| RATHBUN REGIONAL WATER ASSOCIATION | 25 | 0 |
Frequently Asked Questions
How many water systems are in Iowa?
How many water systems in Iowa have health violations?
How many health-based violation records are in this extract for Iowa?
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About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Only community water systems (CWS) are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.