Public water system · OH5553612

Active

Nawa

At a glance

Nawa (PWSID OH5553612) is an active community water system in Miami County, Ohio. It reports serving 29,974 people through 10,531 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in December 2019.

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

Population served

29,974

Service connections

10,531

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDOH5553612

System typeCommunity water system

Activity statusActive

Population served29,974

Service connections10,531

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyOH state drinking water program

City served—

StateOhio

ZIP—

CountyMiami County

How does Nawa compare with other water systems in Miami County?

By EPA's size categories, Nawa is a large system (10,001 to 100,000 people). Miami County has 46 active public water systems, and Nawa is the largest of them by population served. Its population served is about 15 times the county average of 1,981 people per system, and accounts for 33% of the 91,109 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 Nawa is about 4.5 times 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,446 Ohio systems (89%) list groundwater as their primary source.

Who owns and regulates Nawa?

EPA lists Nawa 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. 36 of the 46 active systems in Miami County (78%) are also privately owned.

Does Nawa have drinking water violations?

EPA's records list 4 violations for this system; none is health-based, and the most recent began in December 2019. The violations listed here began between June 2012 and December 2019. By type: 2 public notice, recordkeeping or other, 1 monitoring and 1 monitoring and reporting. The contaminants or rules involved are Consumer Confidence Rule, Public Notice, Revised Total Coliform Rule and Total coliform bacteria (TCR). EPA lists 3 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
2019-12-30	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Unaddressed
2018-12-02	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2017-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2012-06-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved

All 4 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.

Nawa: frequently asked questions

Who runs Nawa?

Nawa (PWSID OH5553612) is a community water system privately owned. It is regulated by the OH state drinking water program.

How many people does Nawa serve?

Nawa reports serving 29,974 people through 10,531 service connections in Miami County, Ohio.

Where does Nawa 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 Nawa have any drinking water violations?

EPA's records list 4 violations for this system; none is health-based, and the most recent began in December 2019. 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 Nawa'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 4 violations for this system; none is health-based, and the most recent began in December 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.

Where can I find Nawa's water quality report?

As a community water system, Nawa 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 Miami County

Water system	County	Population served	Type	Source
Troy City Pws	Miami	26,305	Community	Groundwater
Piqua City Pws	Miami	20,354	Community	Surface water
West Milton Village Pws	Miami	4,890	Community	Purchased groundwater
Covington Village Pws	Miami	2,718	Community	Groundwater
Miami East Schools Pws	Miami	1,430	Non-transient non-community	Groundwater
Pleasant Hill Village Pws	Miami	1,226	Community	Groundwater

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, “Nawa, PWSID OH5553612, Ohio”, https://aquacensus.com/water-systems/ohio/nawa-oh5553612 (data as of October 1, 2026).