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Community Water System · PWS MI0004740

Niles

Niles, Michigan 49120 - drinking water served from groundwater sources to 14,215 people, tracked in EPA SDWIS and UCMR5.

14,215
People served
106
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 106 drinking-water violations at Niles - above the Michigan per-system average.

106
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
14,215
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Niles

Niles is a local-owned community water system that delivers drinking water to 14,215 residents in Niles, Michigan (Berrien County) through 5,000 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 106 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 100 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 10 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Niles's 106 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
14,215
Total Violations
106
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
5,000
County
Berrien
School/Daycare
No
MCL Violations
0
Monitoring Violations
100
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 10 2004
cis-1,2-Dichloroethylene MR 4 2020
DICHLOROMETHANE MR 4 2020
p-Dichlorobenzene MR 4 2020
Vinyl chloride MR 4 2020
trans-1,2-Dichloroethylene MR 4 2020
1,2-Dichloroethane MR 4 2020
1,1,1-Trichloroethane MR 4 2020
1,2-Dichloropropane MR 4 2020
Tetrachloroethylene MR 4 2020
Benzene MR 4 2020
Toluene MR 4 2020
Revised Total Coliform Rule RPT 4 2022
Trichloroethylene MR 4 2020
Carbon tetrachloride MR 4 2020
Styrene MR 4 2020
1,2,4-Trichlorobenzene MR 4 2020
CHLOROBENZENE MR 4 2020
Ethylbenzene MR 4 2020
Xylenes, Total MR 4 2020
1,1-Dichloroethylene MR 4 2020
1,1,2-Trichloroethane MR 4 2020
o-Dichlorobenzene MR 4 2020
Total Haloacetic Acids (HAA5) MR 3 2018
TTHM MR 3 2018
Consumer Confidence Rule Other 2 2007

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 290 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 7/8/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
PFEESA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 7/8/2024 <20.00 ppt 20.00 ppt Not Detected
PFPeS 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpS 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 7/8/2024 <7.00 ppt 7.00 ppt Not Detected
11Cl-PF3OUdS 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 7/8/2024 <8.00 ppt 8.00 ppt Not Detected
6:2 FTS 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
PFBS 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
ADONA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
PFDoA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 7/8/2024 <2.00 ppt 2.00 ppt Not Detected
9Cl-PF3ONS 7/8/2024 <2.00 ppt 2.00 ppt Not Detected
HFPO-DA 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
PFDA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 7/8/2024 <2.00 ppt 2.00 ppt Not Detected
6:2 FTS 7/8/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 7/8/2024 <2.00 ppt 2.00 ppt Not Detected
PFDA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/8/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/8/2024 <3.00 ppt 3.00 ppt Not Detected

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 Niles.

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 MI0004740 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 Niles 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
2022 Revised Total Coliform Rule RPT 4 SDWIS / MI0004740 / 8000
2020 cis-1,2-Dichloroethylene MR 4 SDWIS / MI0004740 / 2380
2020 DICHLOROMETHANE MR 4 SDWIS / MI0004740 / 2964
2020 p-Dichlorobenzene MR 4 SDWIS / MI0004740 / 2969
2020 Vinyl chloride MR 4 SDWIS / MI0004740 / 2976
2020 trans-1,2-Dichloroethylene MR 4 SDWIS / MI0004740 / 2979
2020 1,2-Dichloroethane MR 4 SDWIS / MI0004740 / 2980
2020 1,1,1-Trichloroethane MR 4 SDWIS / MI0004740 / 2981
2020 1,2-Dichloropropane MR 4 SDWIS / MI0004740 / 2983
2020 Tetrachloroethylene MR 4 SDWIS / MI0004740 / 2987
2020 Benzene MR 4 SDWIS / MI0004740 / 2990
2020 Toluene MR 4 SDWIS / MI0004740 / 2991
2020 Trichloroethylene MR 4 SDWIS / MI0004740 / 2984
2020 Carbon tetrachloride MR 4 SDWIS / MI0004740 / 2982
2020 Styrene MR 4 SDWIS / MI0004740 / 2996

How Niles Compares

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

Metric Niles Michigan avg Federal benchmark
Total violations 106 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 14,215 830 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 Niles water safe to drink?
Niles (PWS ID: MI0004740) has 106 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 14,215 people using Groundwater sources.
How many people does Niles serve?
Niles serves 14,215 people in Niles, Michigan. It is a Local-owned system using Groundwater water sources with 5,000 service connections.
What type of violations does Niles have?
Niles has 106 total violations: 0 health-based violations (MCL exceedances or treatment failures), 100 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Niles water?
No. Niles was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Niles use?
Niles 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
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.