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
251–275 of 498Rathbun Regional Water (mount Pleasant)
IA4453901 · 1,465 served
Cherokee Rws- Mill Creek Subsystem
IA1800900 · 1,451 served
Earlham Municipal Waterworks
IA6115097 · 1,446 served
Clarinda Treatment Complex
IA7329501 · 1,439 served
State Center Muni Water Dept
IA6484093 · 1,411 served
Palo Water Supply
IA5765101 · 1,407 served
Logan Water Supply
IA4337092 · 1,397 served
Kingsley Water Supply
IA7537032 · 1,396 served
Roland Water Supply
IA8570001 · 1,394 served
Sanborn Water Supply
IA7165025 · 1,392 served
Manning Water Supply
IA1457025 · 1,392 served
Sirwa #3 (leon)
IA2718755 · 1,373 served
Nora Springs Water Supply
IA3423069 · 1,369 served
Mahaska Rural Water (new Sharon)
IA6264063 · 1,368 served
Lone Tree Muni Water System
IA5240095 · 1,357 served
Woodward Water Supply
IA2576036 · 1,346 served
Lenox Water Supply
IA8748075 · 1,339 served
Dike Water Supply
IA3815042 · 1,306 served
Laurens Water Supply
IA7614063 · 1,301 served
Lake Ridge, Incorporated
IA5225315 · 1,300 served
Coon Rapids Municipal Utilities
IA1427070 · 1,300 served
Dysart Water Supply
IA8627095 · 1,281 served
Shell Rock Muni Water Supp
IA1286042 · 1,269 served
Manly Water Supply
IA9845024 · 1,266 served
Central City Water Supply
IA5720010 · 1,264 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
Rathbun Regional Water (mount Pleasant)
Violation history, PFAS records, and official source links
Cherokee Rws- Mill Creek Subsystem
Violation history, PFAS records, and official source links
Earlham Municipal Waterworks
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