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
276–300 of 498Fayette Water Supply
IA3342041 · 1,256 served
Clarksville Water Supply
IA1228038 · 1,254 served
Alton Municipal Water Department
IA8403029 · 1,248 served
Amana Society Water System North
IA4848001 · 1,248 served
Anamosa State Penitentiary
IA5300947 · 1,230 served
Elkader Muni Water Dept
IA2223011 · 1,219 served
Jewell Water Supply
IA4027010 · 1,216 served
Melcher-dallas Water Supply
IA6300099 · 1,213 served
Gilbert Water Supply
IA8531083 · 1,211 served
Tripoli Water Supply
IA0975032 · 1,191 served
Lyon-sioux Rws-rock Rapids
IA6000800 · 1,187 served
Buffalo Water Supply
IA8218050 · 1,176 served
Camp Dodge Water Supply
IA7700901 · 1,169 served
Lake Park Municipal Utilities
IA3045046 · 1,167 served
Springville Water Supply
IA5782087 · 1,164 served
St Ansgar Water Supply
IA6673016 · 1,161 served
Strawberry Point Water Supply
IA2279003 · 1,155 served
Glidden Water Supply
IA1438091 · 1,140 served
Lake View Water Supply
IA8127048 · 1,133 served
Villisca Municipal Water Dept
IA6985051 · 1,132 served
Sheffield Water Supply
IA3570037 · 1,130 served
Aplington Water Supply
IA1207061 · 1,126 served
Calmar Water Supply
IA9615064 · 1,125 served
Mapleton Municipal Water Plant
IA6727028 · 1,124 served
Arnolds Park Water Department
IA3003067 · 1,113 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
Fayette Water Supply
Violation history, PFAS records, and official source links
Clarksville Water Supply
Violation history, PFAS records, and official source links
Alton Municipal Water Department
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