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Community Water System · PWS MI0001530

Coloma

Coloma, Michigan 49038 - drinking water served from groundwater sources to 1,555 people, tracked in EPA SDWIS and UCMR5.

1,555
People served
167
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 167 drinking-water violations at Coloma - above the Michigan per-system average.

167
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
1,555
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Coloma

Coloma is a local-owned community water system that delivers drinking water to 1,555 residents in Coloma, Michigan (Berrien County) through 440 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 167 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 161 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is TTHM, recorded in 8 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 Michigan, EPA tracks 10,959 public water systems serving 9,098,093 people, with 255,201 cumulative violations and 31,467 health-based violations on record. About 86% of systems in the state carry at least one violation, and state-wide the average per system is 23.3 violations. Statewide, 87 of 318 UCMR5-tested systems have reported PFAS detections (27.4%).

Coloma's 167 violations sit above the Michigan 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
1,555
Total Violations
167
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
440
County
Berrien
School/Daycare
No
MCL Violations
0
Monitoring Violations
161
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 8 2021
Combined Radium (-226 and -228) MR 7 2017
Coliform (TCR) MR 5 2013
Total Haloacetic Acids (HAA5) MR 4 2021
Xylenes, Total MR 3 2017
DICHLOROMETHANE MR 3 2017
p-Dichlorobenzene MR 3 2017
Vinyl chloride MR 3 2017
1,2-Dichloroethane MR 3 2017
1,1,1-Trichloroethane MR 3 2017
1,2-Dichloropropane MR 3 2017
Trichloroethylene MR 3 2017
CHLOROBENZENE MR 3 2017
Benzene MR 3 2017
Ethylbenzene MR 3 2017
Styrene MR 3 2017
Endrin MR 3 2017
BHC-GAMMA MR 3 2017
Methoxychlor MR 3 2017
Toxaphene MR 3 2017
Simazine MR 3 2017
Picloram MR 3 2017
Dinoseb MR 3 2017
Aldicarb sulfoxide MR 3 2017
Aldicarb sulfone MR 3 2017
Carbofuran MR 3 2017
Aldicarb MR 3 2017
Atrazine MR 3 2017
LASSO MR 3 2017
HEXACHLOROBENZENE MR 3 2017

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 Coloma.

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 MI0001530 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Michigan Drinking Water Authority

Michigan EGLE, Drinking Water and Environmental Health Division is the primacy agency that licenses and inspects Coloma under EPA-delegated authority.

Open MI regulator portal

Source: Michigan EGLE, Drinking Water and Environmental Health Division

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
2021 TTHM MR 8 SDWIS / MI0001530 / 2950
2021 Total Haloacetic Acids (HAA5) MR 4 SDWIS / MI0001530 / 2456
2018 Lead and Copper Rule MR 2 SDWIS / MI0001530 / 5000
2017 Combined Radium (-226 and -228) MR 7 SDWIS / MI0001530 / 4010
2017 Xylenes, Total MR 3 SDWIS / MI0001530 / 2955
2017 DICHLOROMETHANE MR 3 SDWIS / MI0001530 / 2964
2017 p-Dichlorobenzene MR 3 SDWIS / MI0001530 / 2969
2017 Vinyl chloride MR 3 SDWIS / MI0001530 / 2976
2017 1,2-Dichloroethane MR 3 SDWIS / MI0001530 / 2980
2017 1,1,1-Trichloroethane MR 3 SDWIS / MI0001530 / 2981
2017 1,2-Dichloropropane MR 3 SDWIS / MI0001530 / 2983
2017 Trichloroethylene MR 3 SDWIS / MI0001530 / 2984
2017 CHLOROBENZENE MR 3 SDWIS / MI0001530 / 2989
2017 Benzene MR 3 SDWIS / MI0001530 / 2990
2017 Ethylbenzene MR 3 SDWIS / MI0001530 / 2992

How Coloma Compares

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

Metric Coloma Michigan avg Federal benchmark
Total violations 167 23.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 2.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 27.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,555 830 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,959 regulated public water systems in Michigan.

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 Coloma water safe to drink? ▼
Coloma (PWS ID: MI0001530) has 167 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,555 people using Groundwater sources.
How many people does Coloma serve? ▼
Coloma serves 1,555 people in Coloma, Michigan. It is a Local-owned system using Groundwater water sources with 440 service connections.
What type of violations does Coloma have? ▼
Coloma has 167 total violations: 0 health-based violations (MCL exceedances or treatment failures), 161 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Coloma water? ▼
No PFAS testing data is available for Coloma under the EPA's UCMR5 monitoring program.
What water source does Coloma use? ▼
Coloma 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.
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.