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Community Water System · PWS IA2740050

Lamoni Municipal Utilities

Lamoni, Iowa 50140 - drinking water served from surface water sources to 2,104 people, tracked in EPA SDWIS and UCMR5.

2,104
People served
154
EPA violations
20
Health-based
Untested
UCMR5 result

The verdict

EPA records 154 drinking-water violations at Lamoni Municipal Utilities, 13% of them health-based - above the Iowa per-system average.

154
Total EPA violations on record
13%
Health-based (MCL / treatment failure)
2,104
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lamoni Municipal Utilities

Lamoni Municipal Utilities is a local-owned community water system that delivers drinking water to 2,104 residents in Lamoni, Iowa (Decatur County) through 876 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 154 total violations for this system , of which 20 (13%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 107 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Surface Water Treatment Rule, recorded in 15 violations (TT, health-based). 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%).

Lamoni Municipal Utilities's 154 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
2,104
Total Violations
154
Health-Based Violations
20
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
876
County
Decatur
School/Daycare
No
MCL Violations
5
Monitoring Violations
107
Treatment Tech Violations
15

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule TT 15 2025
CARBON, TOTAL MR 12 2023
Nitrate MR 9 2024
Arsenic MR 8 1991
Barium MR 8 1991
Cadmium MR 8 1991
Selenium MR 8 1991
Chlorite MR 8 2023
Chromium MR 8 1991
Lead and Copper Rule MR 8 1992
Mercury MR 8 1991
Coliform (TCR) MR 7 1990
TTHM MCL 5 2011
Nitrite MR 4 2018
Chlorine dioxide MR 4 2023
Revised Total Coliform Rule MON 4 2022
Combined Radium (-226 and -228) MR 2 2016
Gross Alpha, Excl. Radon and U MR 1 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 Lamoni Municipal Utilities.

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 IA2740050 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
2025 Surface Water Treatment Rule TT 15 SDWIS / IA2740050 / 0200
2024 Nitrate MR 9 SDWIS / IA2740050 / 1040
2023 CARBON, TOTAL MR 12 SDWIS / IA2740050 / 2920
2023 Chlorite MR 8 SDWIS / IA2740050 / 1009
2023 Chlorine dioxide MR 4 SDWIS / IA2740050 / 1008
2022 Revised Total Coliform Rule MON 4 SDWIS / IA2740050 / 8000
2018 Nitrite MR 4 SDWIS / IA2740050 / 1041
2016 Combined Radium (-226 and -228) MR 2 SDWIS / IA2740050 / 4010
2016 Gross Alpha, Excl. Radon and U MR 1 SDWIS / IA2740050 / 4000
2011 TTHM MCL 5 SDWIS / IA2740050 / 2950
1992 Lead and Copper Rule MR 8 SDWIS / IA2740050 / 5000
1991 Arsenic MR 8 SDWIS / IA2740050 / 1005
1991 Barium MR 8 SDWIS / IA2740050 / 1010
1991 Cadmium MR 8 SDWIS / IA2740050 / 1015
1991 Selenium MR 8 SDWIS / IA2740050 / 1045

How Lamoni Municipal Utilities Compares

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

Metric Lamoni Municipal Utilities Iowa avg Federal benchmark
Total violations 154 77 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 20 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 2,104 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 Lamoni Municipal Utilities water safe to drink? ▼
Lamoni Municipal Utilities (PWS ID: IA2740050) has 154 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,104 people using Surface Water sources.
How many people does Lamoni Municipal Utilities serve? ▼
Lamoni Municipal Utilities serves 2,104 people in Lamoni, Iowa. It is a Local-owned system using Surface Water water sources with 876 service connections.
What type of violations does Lamoni Municipal Utilities have? ▼
Lamoni Municipal Utilities has 154 total violations: 20 health-based violations (MCL exceedances or treatment failures), 107 monitoring/reporting violations, and 15 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lamoni Municipal Utilities water? ▼
No PFAS testing data is available for Lamoni Municipal Utilities under the EPA's UCMR5 monitoring program.
What water source does Lamoni Municipal Utilities use? ▼
Lamoni Municipal Utilities 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.