Public water system · MI0004830

Active

Northville

At a glance

Northville (PWSID MI0004830) is an active community water system in Wayne County, Michigan. It reports serving 6,119 people through 2,564 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; none is health-based, and the most recent began in October 2025.

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

Population served

6,119

Service connections

2,564

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDMI0004830

System typeCommunity water system

Activity statusActive

Population served6,119

Service connections2,564

Primary water sourcePurchased surface water

Owner typeLocal government

Primacy agencyMI state drinking water program

City servedNorthville

StateMichigan

ZIP—

CountyWayne County

How does Northville compare with other water systems in Wayne County?

By EPA's size categories, Northville is a medium system (3,301 to 10,000 people). Wayne County has 55 active public water systems. Its population served is well below the county average of 32,428 people per system, and accounts for 0.3% of the 1,783,512 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 Northville is roughly in line with 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 262 Michigan systems (2.5%) list purchased surface water as their primary source.

Who owns and regulates Northville?

EPA lists Northville 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. 44 of the 55 active systems in Wayne County (80%) are also owned by a local government.

Does Northville have drinking water violations?

EPA's records list 7 violations for this system; none is health-based, and the most recent began in October 2025. The violations listed here began between July 2000 and October 2025. By type: 5 monitoring and reporting, 1 reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (2 of them). EPA lists 6 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2025-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Unaddressed
2025-07-02	ReportingNotification, Known or Potential LSL · code 4H	Lead and Copper Rule Revisionscode 5200	No	Resolved
2013-08-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2013-08-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2013-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2013-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2000-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved

All 7 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.

Northville: frequently asked questions

Who runs Northville?

Northville (PWSID MI0004830) is a community water system owned by a local government. It is regulated by the MI state drinking water program.

How many people does Northville serve?

Northville reports serving 6,119 people through 2,564 service connections in Wayne County, Michigan.

Where does Northville get its water?

EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.

Does Northville have any drinking water violations?

EPA's records list 7 violations for this system; none is health-based, and the most recent began in October 2025. 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 Northville's 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. EPA's records list 7 violations for this system; none is health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.

Where can I find Northville's water quality report?

As a community water system, Northville 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 Wayne County

Water system	County	Population served	Type	Source
Detroit City of	Wayne	633,218	Community	Purchased surface water
Dearborn	Wayne	109,976	Community	Purchased surface water
Canton Township	Wayne	99,627	Community	Surface water
Livonia	Wayne	96,942	Community	Purchased surface water
Westland	Wayne	85,420	Community	Purchased surface water
Taylor	Wayne	63,409	Community	Purchased surface water

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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, “Northville, PWSID MI0004830, Michigan”, https://aquacensus.com/water-systems/michigan/northville-mi0004830 (data as of October 1, 2026).