Public water system · MO4010221
ActiveDoniphan Pws
At a glance
Doniphan Pws (PWSID MO4010221) is an active community water system in Ripley County, Missouri. It reports serving 2,000 people through 875 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,000
Service connections
875
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Doniphan Pws compare with other water systems in Ripley County?
By EPA's size categories, Doniphan Pws is a small system (501 to 3,300 people). Ripley County has 8 active public water systems, and Doniphan Pws is the 3rd-largest of them by population served. Its population served is about 85% above the county average of 1,081 people per system, and accounts for 23% of the 8,651 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 Doniphan 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,521 Missouri systems (86%) list groundwater as their primary source.
Who owns and regulates Doniphan Pws?
EPA lists Doniphan 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. 6 of the 8 active systems in Ripley County (75%) are also owned by a local government.
Does Doniphan Pws have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2023. The violations listed here began between June 1994 and July 2023. By type: 4 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 4 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1997-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 6 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.
Doniphan Pws: frequently asked questions
Who runs Doniphan Pws?
Doniphan Pws (PWSID MO4010221) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Doniphan Pws serve?
Doniphan Pws reports serving 2,000 people through 875 service connections in Ripley County, Missouri.
Where does Doniphan Pws 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 Doniphan Pws have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2023. 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 Doniphan 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. EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Doniphan Pws' water quality report?
As a community water system, Doniphan 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 Ripley County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ripley County Pwsd 2 | Ripley | 2,780 | Community | Groundwater |
| Ripley County Pwsd 1 East | Ripley | 2,265 | Community | Groundwater |
| Ripley County Pwsd 1 West | Ripley | 940 | Community | Groundwater |
| Naylor Pws | Ripley | 471 | Community | Groundwater |
| Gatewood Elementary School | Ripley | 145 | Non-transient non-community | Groundwater |
| Usfs Float Camp Campground | Ripley | 25 | Transient non-community | Groundwater |
Related pages
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, “Doniphan Pws, PWSID MO4010221, Missouri”, https://aquacensus.com/water-systems/missouri/doniphan-pws-mo4010221 (data as of October 1, 2026).