State Hub
Iowa Water Quality
498
Utilities in database
2.9M
Residents served
0
With open violations
146
PFAS monitored
Quick Answer
Iowa public drinking water is served by 498 EPA-tracked water systems, providing service to approximately 2.9 million residents through public utilities. No open health-based violations are currently recorded across tracked systems in the EPA federal database. 146 systems have official PFAS monitoring records from the EPA UCMR 5 program (2023–2025). About 35% of IA residents use private wells, which fall outside federal utility compliance monitoring.
No open health-based violations are currently recorded in the EPA SDWIS database for Iowa's tracked water systems. Always verify with your utility's Consumer Confidence Report for annual test results.
Drinking Water in Iowa
Iowa has 498 community water systems serving approximately 2.9 million residents. Primary water sources include groundwater. The most commonly reported contaminants include disinfection byproducts, arsenic. 35% of Iowa residents rely on private wells. DNR holds primary enforcement authority under the Safe Drinking Water Act.
Safest Large Utilities
Iowa systems with no open health violations serving 10,000+ residents.
Utilities in Iowa
451–475 of 498Dumont Water Supply
IA1240081 · 635 served
Goldfield Water Supply
IA9937092 · 634 served
Elk Horn Muni Water Works
IA8325013 · 631 served
Sutherland Water Supply
IA7177007 · 629 served
Hopkinton Municipal Utilities
IA2835056 · 622 served
Agency Water Works
IA9003006 · 620 served
Doon Water Supply
IA6015047 · 619 served
Kellogg Water Supply
IA5038017 · 617 served
Grand Mound Water Supply
IA2341099 · 615 served
Moulton Water Department
IA0472012 · 607 served
Lyon-sioux Rws-boyden
IA6000744 · 605 served
Farmington Water Supply
IA8930038 · 601 served
Cedar Terrace Mhc
IA5700600 · 600 served
Brighton Municipal Water Supply
IA9209043 · 600 served
Keystone Water Supply
IA0640030 · 599 served
Minden Water Supply
IA7849086 · 598 served
Ireton Water Supply
IA8447098 · 590 served
Early Municipal Water Supply
IA8114000 · 587 served
Clermont Water Supply
IA3317047 · 586 served
Swea City Water Supply
IA5584009 · 584 served
Gilman Water Supply
IA6436087 · 582 served
Everly Water Supply
IA2115029 · 575 served
New Hartford Water Supply
IA1271058 · 570 served
Radcliffe Municipal Water
IA4283067 · 561 served
Badger Water Supply
IA9405082 · 561 served
Key Contaminant Concerns in Iowa
These contaminants appear most frequently in Iowa utility records or pose elevated risk in this region based on EPA data.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
EPA limit: 80 µg/L (TTHMs) / 60 µg/L (HAA5)
Arsenic
Arsenic (As) occurs naturally in rock and soil, dissolving into groundwater through natural weathering processes. Inorganic arsenic — the form found in drinking water — is a known human carcinogen. The western United States has particularly arsenic-rich geological formations, but elevated levels have been found in 48 states. Arsenic is tasteless and odorless.
EPA limit: 10 ppb
City Water Reports in Iowa
Tap water quality pages for Iowa cities — violations, PFAS records, utility profiles, and official source links.
Independent Water Testing
Find a certified lab in Iowa
Utility compliance records show what water systems report to the EPA. An independent test from a certified laboratory confirms what's actually in your tap water. Iowa labs can test for PFAS, lead, nitrates, bacteria, and dozens of other contaminants.
Explore Water Quality in Iowa
Dumont Water Supply
Violation history, PFAS records, and official source links
Goldfield Water Supply
Violation history, PFAS records, and official source links
Elk Horn Muni Water Works
Violation history, PFAS records, and official source links
PFAS monitoring records — Iowa
146 water systems in Iowa with EPA UCMR 5 records
Lead in Iowa drinking water
State-specific lead data, violation utilities, and testing guidance
PFAS in Iowa drinking water
State-specific PFAS data, MCL context, and treatment options
Certified water testing labs in Iowa
Labs certified for PFAS (EPA 533/537.1), lead, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and filtration guides with cost ranges
Data sources and methodology
How WaterUtilityReport.com sources and validates official EPA data
Common Questions About Iowa Drinking Water
Does Iowa drinking water have PFAS?
146 Iowa water systems have EPA UCMR 5 PFAS monitoring records (2023–2025)
Which Iowa water utilities have open violations?
Browse Iowa utility compliance records and violation history
How do I test my water in Iowa?
State-certified labs for PFAS (EPA 533/537.1), lead, nitrate, and bacteria testing
What treatment removes PFAS from IA tap water?
Reverse osmosis removes PFAS, lead, arsenic, and nitrates — cost, maintenance, and NSF certification explained
What do Iowa PFAS records tell me about my water?
EPA limits, health context, and what UCMR 5 detection above MRL means for your water
How is Iowa water quality data sourced here?
EPA SDWIS violations, UCMR 5 PFAS records, and CCR data — sources, accuracy notes, and limitations
Iowa Water FAQs
Data sources: Utility compliance and violation data from EPA SDWIS (Safe Drinking Water Information System). PFAS monitoring records from EPA UCMR 5 (Unregulated Contaminant Monitoring Rule 5, 2023–2025). Contaminant data from EPA and ATSDR public references. This page summarizes public records — it is not a compliance determination. Methodology →
Last updated: 2026-04-22