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Community Water System · PWS IA0220075

Corning Muni Water Department

Corning, Iowa 50841 - drinking water served from surface water sources to 1,735 people, tracked in EPA SDWIS and UCMR5.

1,735
People served
893
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 893 drinking-water violations at Corning Muni Water Department, 1% of them health-based - above the Iowa per-system average.

893
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
1,735
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Corning Muni Water Department

Corning Muni Water Department is a local-owned community water system that delivers drinking water to 1,735 residents in Corning, Iowa (Adams County) through 1,001 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 893 total violations for this system , of which 8 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 516 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Toluene, recorded in 40 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Iowa, EPA tracks 1,795 public water systems serving 3,114,444 people, with 138,271 cumulative violations and 27,946 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 77 violations. Statewide, 127 of 152 UCMR5-tested systems have reported PFAS detections (83.6%).

Corning Muni Water Department's 893 violations sit above the Iowa average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
1,735
Total Violations
893
Health-Based Violations
8
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,001
County
Adams
School/Daycare
No
MCL Violations
5
Monitoring Violations
516
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Toluene MR 40 1994
Ethylbenzene MR 28 1993
cis-1,2-Dichloroethylene MR 24 1993
p-Dichlorobenzene MR 24 1993
1,1-Dichloroethylene MR 24 1993
1,2-Dichloroethane MR 24 1993
Carbon tetrachloride MR 24 1993
Trichloroethylene MR 24 1993
Tetrachloroethylene MR 24 1993
CHLOROBENZENE MR 24 1993
Xylenes, Total MR 24 1993
trans-1,2-Dichloroethylene MR 24 1993
1,1,1-Trichloroethane MR 24 1993
1,1,2-Trichloroethane MR 24 1993
Benzene MR 24 1993
1,2-Dichloropropane MR 24 1993
DICHLOROMETHANE MR 24 1993
o-Dichlorobenzene MR 24 1993
Styrene MR 23 1993
Coliform (TCR) MR 15 2009
Nitrate MR 8 2024
TTHM MR 5 2013
Chlorite MCL 5 2016
Total Haloacetic Acids (HAA5) MR 5 2013
Interim Enhanced Surface Water Treatment Rule MR 4 2010
Chlorine MR 4 2009
Surface Water Treatment Rule TT 3 2016
Public Notice Other 3 2016

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Corning Muni Water Department.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID IA0220075 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Iowa Drinking Water Authority

Iowa's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find IA regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 Nitrate MR 8 SDWIS / IA0220075 / 1040
2016 Chlorite MCL 5 SDWIS / IA0220075 / 1009
2016 Surface Water Treatment Rule TT 3 SDWIS / IA0220075 / 0200
2016 Public Notice Other 3 SDWIS / IA0220075 / 7500
2013 TTHM MR 5 SDWIS / IA0220075 / 2950
2013 Total Haloacetic Acids (HAA5) MR 5 SDWIS / IA0220075 / 2456
2010 Interim Enhanced Surface Water Treatment Rule MR 4 SDWIS / IA0220075 / 0300
2009 Coliform (TCR) MR 15 SDWIS / IA0220075 / 3100
2009 Chlorine MR 4 SDWIS / IA0220075 / 0999
1994 Toluene MR 40 SDWIS / IA0220075 / 2991
1993 Ethylbenzene MR 28 SDWIS / IA0220075 / 2992
1993 cis-1,2-Dichloroethylene MR 24 SDWIS / IA0220075 / 2380
1993 p-Dichlorobenzene MR 24 SDWIS / IA0220075 / 2969
1993 1,1-Dichloroethylene MR 24 SDWIS / IA0220075 / 2977
1993 1,2-Dichloroethane MR 24 SDWIS / IA0220075 / 2980

How Corning Muni Water Department Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Corning Muni Water Department Iowa avg Federal benchmark
Total violations 893 77 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 15.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 83.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,735 1,735 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,795 regulated public water systems in Iowa.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Corning Muni Water Department water safe to drink? ▼
Corning Muni Water Department (PWS ID: IA0220075) has 893 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,735 people using Surface Water sources.
How many people does Corning Muni Water Department serve? ▼
Corning Muni Water Department serves 1,735 people in Corning, Iowa. It is a Local-owned system using Surface Water water sources with 1,001 service connections.
What type of violations does Corning Muni Water Department have? ▼
Corning Muni Water Department has 893 total violations: 8 health-based violations (MCL exceedances or treatment failures), 516 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Corning Muni Water Department water? ▼
No PFAS testing data is available for Corning Muni Water Department under the EPA's UCMR5 monitoring program.
What water source does Corning Muni Water Department use? ▼
Corning Muni Water Department uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.