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COGGON WATER DEPARTMENT

PWS ID: IA5722053 · COGGON, Iowa 52218

COGGON WATER DEPARTMENT serves 701 people in COGGON, Iowa using Groundwater water sources. It has 165 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: COGGON WATER DEPARTMENT

COGGON WATER DEPARTMENT is a local-owned community water system that delivers drinking water to 701 residents in COGGON, Iowa (Linn County) through 306 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 165 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 164 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 Nitrate, recorded in 12 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. COGGON WATER DEPARTMENT's 165 violations sit above the Iowa average. Statewide, 127 of 152 UCMR5-tested systems have reported PFAS detections (83.6%). 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
701
Total Violations
165
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
306
County
Linn
School/Daycare
No
MCL Violations
0
Monitoring Violations
164
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 12 2023
LASSO MR 10 2013
Revised Total Coliform Rule MON 9 2025
Atrazine MR 9 2013
Gross Alpha, Excl. Radon and U MR 4 2017
Combined Radium (-226 and -228) MR 4 2017
2,4-D MR 4 2013
Di(2-ethylhexyl) adipate MR 4 2013
Pentachlorophenol MR 4 2013
Picloram MR 4 2013
Diquat MR 4 2013
Glyphosate MR 4 2013
Benzene MR 4 2013
Carbon tetrachloride MR 4 2013
o-Dichlorobenzene MR 4 2013
p-Dichlorobenzene MR 4 2013
1,2-Dichloroethane MR 4 2013
cis-1,2-Dichloroethylene MR 4 2013
trans-1,2-Dichloroethylene MR 4 2013
DICHLOROMETHANE MR 4 2013
Styrene MR 4 2013
Tetrachloroethylene MR 4 2013
1,2,4-Trichlorobenzene MR 4 2013
1,1,1-Trichloroethane MR 4 2013
Trichloroethylene MR 4 2013
Lead and Copper Rule MR 4 2023
1,2-Dichloropropane MR 4 2013
Simazine MR 4 2013
1,1,2-Trichloroethane MR 4 2013
CHLOROBENZENE MR 4 2013

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 COGGON 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 IA5722053 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 Revised Total Coliform Rule MON 9 SDWIS / IA5722053 / 8000
2023 Nitrate MR 12 SDWIS / IA5722053 / 1040
2023 Lead and Copper Rule MR 4 SDWIS / IA5722053 / 5000
2017 Gross Alpha, Excl. Radon and U MR 4 SDWIS / IA5722053 / 4000
2017 Combined Radium (-226 and -228) MR 4 SDWIS / IA5722053 / 4010
2013 LASSO MR 10 SDWIS / IA5722053 / 2051
2013 Atrazine MR 9 SDWIS / IA5722053 / 2050
2013 2,4-D MR 4 SDWIS / IA5722053 / 2105
2013 Di(2-ethylhexyl) adipate MR 4 SDWIS / IA5722053 / 2035
2013 Pentachlorophenol MR 4 SDWIS / IA5722053 / 2326
2013 Picloram MR 4 SDWIS / IA5722053 / 2040
2013 Diquat MR 4 SDWIS / IA5722053 / 2032
2013 Glyphosate MR 4 SDWIS / IA5722053 / 2034
2013 Benzene MR 4 SDWIS / IA5722053 / 2990
2013 Carbon tetrachloride MR 4 SDWIS / IA5722053 / 2982

How COGGON WATER DEPARTMENT Compares

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

Metric COGGON WATER DEPARTMENT Iowa avg Federal benchmark
Total violations 165 77 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 701 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is COGGON WATER DEPARTMENT water safe to drink? ▼
COGGON WATER DEPARTMENT (PWS ID: IA5722053) has 165 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 701 people using Groundwater sources.
How many people does COGGON WATER DEPARTMENT serve? ▼
COGGON WATER DEPARTMENT serves 701 people in COGGON, Iowa. It is a Local-owned system using Groundwater water sources with 306 service connections.
What type of violations does COGGON WATER DEPARTMENT have? ▼
COGGON WATER DEPARTMENT has 165 total violations: 0 health-based violations (MCL exceedances or treatment failures), 164 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in COGGON WATER DEPARTMENT water? ▼
No PFAS testing data is available for COGGON WATER DEPARTMENT under the EPA's UCMR5 monitoring program.
What water source does COGGON WATER DEPARTMENT use? ▼
COGGON WATER DEPARTMENT uses Groundwater 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.

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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.

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