Public water system · PA4110034
ActiveGreater Johnstown Wa Riverside
At a glance
Greater Johnstown Wa Riverside (PWSID PA4110034) is an active community water system in Cambria County, Pennsylvania. It reports serving 49,500 people through 21,902 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
49,500
Service connections
21,902
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Greater Johnstown Wa Riverside compare with other water systems in Cambria County?
By EPA's size categories, Greater Johnstown Wa Riverside is a large system (10,001 to 100,000 people). Cambria County has 65 active public water systems, and Greater Johnstown Wa Riverside is the largest of them by population served. Its population served is about 23 times the county average of 2,176 people per system, and accounts for 35% of the 141,432 people reported by systems filed under the county. Across Pennsylvania, the 7,217 active systems average 1,741 people each. Nationally, the average active community water system reports serving 6,703 people, so Greater Johnstown Wa Riverside is about 7.4 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. Pennsylvania has 1,762 active community water systems, 24% of the state's 7,217 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 246 Pennsylvania systems (3.4%) list surface water as their primary source.
Who owns and regulates Greater Johnstown Wa Riverside?
EPA lists Greater Johnstown Wa Riverside as owned by a local government. The PA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 31 of the 65 active systems in Cambria County (48%) are also owned by a local government.
Does Greater Johnstown Wa Riverside have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2026. The violations listed here began between November 2023 and February 2026. By type: 10 monitoring and reporting, 1 reporting and 1 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (2 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 |
|---|---|---|---|---|
| 2026-02-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2026-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2026-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2025-09-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nickelcode 1036 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2023-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Greater Johnstown Wa Riverside: frequently asked questions
Who runs Greater Johnstown Wa Riverside?
Greater Johnstown Wa Riverside (PWSID PA4110034) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Greater Johnstown Wa Riverside serve?
Greater Johnstown Wa Riverside reports serving 49,500 people through 21,902 service connections in Cambria County, Pennsylvania.
Where does Greater Johnstown Wa Riverside 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 Greater Johnstown Wa Riverside have any drinking water violations?
Of the 12 most recent violations in EPA's records, none 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 Greater Johnstown Wa Riverside'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. Of the 12 most recent violations in EPA's records, none 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 PA state drinking water program.
Where can I find Greater Johnstown Wa Riverside's water quality report?
As a community water system, Greater Johnstown Wa Riverside 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 Cambria County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Highland S & W Auth Beaverdam | Cambria | 22,617 | Community | Surface water |
| Ebensburg Boro Muni Auth | Cambria | 8,500 | Community | Surface water |
| Portage Boro Muni Auth | Cambria | 6,500 | Community | Surface water |
| Northern Cambria Muni Water | Cambria | 4,500 | Community | Groundwater under influence of surface water |
| Southwestern Cambria Cnty Auth | Cambria | 4,400 | Community | Purchased surface water |
| Jackson Twp Water Auth | Cambria | 4,236 | Community | Purchased 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, “Greater Johnstown Wa Riverside, PWSID PA4110034, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/greater-johnstown-wa-riverside-pa4110034 (data as of October 1, 2026).