Public water system · MI0004740

Active

Niles

At a glance

Niles (PWSID MI0004740) is an active community water system in Berrien County, Michigan. It reports serving 14,215 people through 5,000 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

14,215

Service connections

5,000

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDMI0004740

System typeCommunity water system

Activity statusActive

Population served14,215

Service connections5,000

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyMI state drinking water program

City servedNiles

StateMichigan

ZIP—

CountyBerrien County

How does Niles compare with other water systems in Berrien County?

By EPA's size categories, Niles is a large system (10,001 to 100,000 people). Berrien County has 196 active public water systems, and Niles is the 2nd-largest of them by population served. Its population served is about 21 times the county average of 669 people per system, and accounts for 11% of the 131,038 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active community water system reports serving 6,703 people, so Niles is about twice that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Michigan has 1,332 active community water systems, 13% of the state's 10,599 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,214 Michigan systems (96%) list groundwater as their primary source.

Who owns and regulates Niles?

EPA lists Niles as owned by a local government. The MI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 24 of the 196 active systems in Berrien County (12%) are also owned by a local government.

Does Niles have drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022. The violations listed here began between January 2020 and July 2022. By type: 11 monitoring and reporting and 1 reporting. The contaminants or rules involved are Revised Total Coliform Rule, Carbon tetrachloride, Dichloromethane and Ethylbenzene. EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.

Began	Violation	Contaminant or rule	Health-based	Status
2022-07-11	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Carbon tetrachloridecode 2982	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Dichloromethanecode 2964	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylbenzenecode 2992	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Toluenecode 2991	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	cis-1,2-Dichloroethylenecode 2380	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Chlorobenzenecode 2989	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloropropanecode 2983	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Tetrachloroethylenecode 2987	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Benzenecode 2990	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,1,2-Trichloroethanecode 2985	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2,4-Trichlorobenzenecode 2378	No	Resolved

The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Niles: frequently asked questions

Who runs Niles?

Niles (PWSID MI0004740) is a community water system owned by a local government. It is regulated by the MI state drinking water program.

How many people does Niles serve?

Niles reports serving 14,215 people through 5,000 service connections in Berrien County, Michigan.

Where does Niles get its water?

EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.

Does Niles have any drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Niles' water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.

Where can I find Niles' water quality report?

As a community water system, Niles must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Berrien County

Water system	County	Population served	Type	Source
Southwest Michigan Regional Sanitary Sew	Berrien	26,780	Community	Purchased surface water
Benton Harbor	Berrien	9,103	Community	Surface water
St Joseph	Berrien	7,930	Community	Surface water
Benton Charter Township	Berrien	6,768	Community	Surface water
Buchanan	Berrien	4,871	Community	Groundwater
Lake Charter Township	Berrien	4,177	Community	Surface water

Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Niles, PWSID MI0004740, Michigan”, https://aquacensus.com/water-systems/michigan/niles-mi0004740 (data as of October 1, 2026).