Public water system · MO1010688
ActiveRidgeway Pws
At a glance
Ridgeway Pws (PWSID MO1010688) is an active community water system in Harrison County, Missouri. It reports serving 372 people through 196 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in February 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
372
Service connections
196
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Ridgeway Pws compare with other water systems in Harrison County?
By EPA's size categories, Ridgeway Pws is a very small system (500 people or fewer). Harrison County has 16 active public water systems. Its population served is well below the county average of 1,206 people per system, and accounts for 1.9% of the 19,292 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 Ridgeway 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 Ridgeway Pws?
EPA lists Ridgeway 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 16 active systems in Harrison County (50%) are also owned by a local government.
Does Ridgeway Pws have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in February 2026. The violations listed here began between May 1994 and February 2026. By type: 1 monitoring, 1 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Revised Total Coliform Rule, Total coliform bacteria (TCR) and Surface Water Treatment Rule. EPA lists 2 as resolved and 1 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 |
|---|---|---|---|---|
| 2026-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1995-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-05-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
All 3 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.
Ridgeway Pws: frequently asked questions
Who runs Ridgeway Pws?
Ridgeway Pws (PWSID MO1010688) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Ridgeway Pws serve?
Ridgeway Pws reports serving 372 people through 196 service connections in Harrison County, Missouri.
Where does Ridgeway 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 Ridgeway Pws have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in February 2026. 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 Ridgeway 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 3 violations for this system; 1 is health-based, and the most recent began in February 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Ridgeway Pws' water quality report?
As a community water system, Ridgeway 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 Harrison County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Harrison County Pwsd 2 | Harrison | 3,740 | Community | Groundwater |
| Bethany Pws | Harrison | 3,292 | Community | Surface water |
| Mercer County Pwsd 1 | Harrison + 1 more | 3,200 | Community | Purchased surface water |
| Woolmarket Village Estates | Harrison | 2,910 | Community | Groundwater |
| Robinwood Forest Utility Inc. | Harrison | 1,275 | Community | Groundwater |
| Lakewood Environmental | Harrison | 982 | 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, “Ridgeway Pws, PWSID MO1010688, Missouri”, https://aquacensus.com/water-systems/missouri/ridgeway-pws-mo1010688 (data as of October 1, 2026).