Public water system · OH3901111

Active

Norwalk City Pws

At a glance

Norwalk City Pws (PWSID OH3901111) is an active community water system in Huron County, Ohio. It reports serving 17,466 people through 7,130 service connections. Its primary water source is surface water, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2021.

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

Population served

17,466

Service connections

7,130

Primary source

Surface water

System type

CWS

Community water system

System record

PWSIDOH3901111

System typeCommunity water system

Activity statusActive

Population served17,466

Service connections7,130

Primary water sourceSurface water

Owner typePrivate

Primacy agencyOH state drinking water program

City served—

StateOhio

ZIP—

CountyHuron County

How does Norwalk City Pws compare with other water systems in Huron County?

By EPA's size categories, Norwalk City Pws is a large system (10,001 to 100,000 people). Huron County has 19 active public water systems, and Norwalk City Pws is the 2nd-largest of them by population served. Its population served is about 5.3 times the county average of 3,315 people per system, and accounts for 28% of the 62,976 people reported by systems filed under the county. Across Ohio, the 3,854 active systems average 2,767 people each. Nationally, the average active community water system reports serving 6,703 people, so Norwalk City Pws is about 161% above 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. Ohio has 1,028 active community water systems, 27% of the state's 3,854 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 102 Ohio systems (2.6%) list surface water as their primary source.

Who owns and regulates Norwalk City Pws?

EPA lists Norwalk City Pws as privately owned. The OH state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 10 of the 19 active systems in Huron County (53%) are also privately owned.

Does Norwalk City Pws have drinking water violations?

Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2021. The violations listed here began between October 1984 and October 2021. By type: 7 contaminant level above the legal limit, 4 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (7 of them). 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
2021-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2021-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2021-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2021-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2004-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2004-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2004-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2003-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2003-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2002-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
1997-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Atrazinecode 2050	Yes	Resolved
1984-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Gross alpha (excluding radon and uranium)code 4000	Yes	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.

Norwalk City Pws: frequently asked questions

Who runs Norwalk City Pws?

Norwalk City Pws (PWSID OH3901111) is a community water system privately owned. It is regulated by the OH state drinking water program.

How many people does Norwalk City Pws serve?

Norwalk City Pws reports serving 17,466 people through 7,130 service connections in Huron County, Ohio.

Where does Norwalk City Pws get its water?

EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.

Does Norwalk City Pws have any drinking water violations?

Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2021. 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 Norwalk City Pws' 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, 7 are health-based, and the most recent began in October 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.

Where can I find Norwalk City Pws' water quality report?

As a community water system, Norwalk City Pws 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 Huron County

Water system	County	Population served	Type	Source
Northern Ohio Rural Water	Huron	18,224	Community	Purchased surface water
Bellevue City	Huron	8,236	Community	Surface water
Willard City	Huron	7,099	Community	Surface water
Northern Ohio Rural Water-South District	Huron	5,226	Community	Purchased surface water
Greenwich Village Pws	Huron	1,476	Community	Groundwater
Monroeville Village	Huron	1,400	Community	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, “Norwalk City Pws, PWSID OH3901111, Ohio”, https://aquacensus.com/water-systems/ohio/norwalk-city-pws-oh3901111 (data as of October 1, 2026).