Public water system · MO4010993

Active

Neelyville Pws

At a glance

Neelyville Pws (PWSID MO4010993) is an active community water system in Butler County, Missouri. It reports serving 485 people through 191 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2025.

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

Population served

485

Service connections

191

Primary source

GWP

Purchased groundwater

System type

CWS

Community water system

System record

PWSIDMO4010993

System typeCommunity water system

Activity statusActive

Population served485

Service connections191

Primary water sourcePurchased groundwater

Owner typeLocal government

Primacy agencyMO state drinking water program

City servedNeelyville

StateMissouri

ZIP—

CountyButler County

How does Neelyville Pws compare with other water systems in Butler County?

By EPA's size categories, Neelyville Pws is a very small system (500 people or fewer). Butler County has 14 active public water systems, and Neelyville Pws is the 5th-largest of them by population served. Its population served is well below the county average of 2,566 people per system, and accounts for 1.3% of the 35,928 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active community water system reports serving 6,703 people, so Neelyville Pws is well below 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. Missouri has 1,612 active community water systems, 55% of the state's 2,943 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 177 Missouri systems (6%) list purchased groundwater as their primary source.

Who owns and regulates Neelyville Pws?

EPA lists Neelyville Pws as owned by a local government. The MO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 14 active systems in Butler County (57%) are also owned by a local government.

Does Neelyville Pws have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2025. The violations listed here began between July 2022 and September 2025. By type: 5 monitoring, 4 public notice, recordkeeping or other, 1 reporting, 1 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (5 of them). EPA lists 11 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
2025-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2025-07-02	ReportingNotification, Known or Potential LSL · code 4H	Lead and Copper Rule Revisionscode 5200	No	Unaddressed
2024-02-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2023-12-30	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2023-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2023-01-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2022-12-05	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2022-10-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2022-09-30	Required treatment not metFailure To Address Deficiency · code 45	Groundwater Rulecode 0700	Yes	Resolved
2022-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2022-07-02	Public notice, recordkeeping or otherFailure to Consult with State · code 20	Groundwater Rulecode 0700	No	Resolved
2022-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	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.

Neelyville Pws: frequently asked questions

Who runs Neelyville Pws?

Neelyville Pws (PWSID MO4010993) is a community water system owned by a local government. It is regulated by the MO state drinking water program.

How many people does Neelyville Pws serve?

Neelyville Pws reports serving 485 people through 191 service connections in Butler County, Missouri.

Where does Neelyville Pws get its water?

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

Does Neelyville Pws have any drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 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 Neelyville 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, one is health-based, and the most recent began in September 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.

Where can I find Neelyville Pws' water quality report?

As a community water system, Neelyville 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 Butler County

Water system	County	Population served	Type	Source
Poplar Bluff Pws	Butler	17,043	Community	Surface water
Butler County Pwsd 1	Butler	12,000	Community	Groundwater
Butler County Pwsd 3	Butler	2,600	Community	Groundwater
Butler County Pwsd 2	Butler	1,625	Community	Groundwater
Butler County Pwsd 104	Butler	475	Community	Purchased groundwater
Qulin Pws	Butler	375	Community	Groundwater

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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, “Neelyville Pws, PWSID MO4010993, Missouri”, https://aquacensus.com/water-systems/missouri/neelyville-pws-mo4010993 (data as of October 1, 2026).