Johnstown Water Quality
Pennsylvania
The tap water in Johnstown, Pennsylvania is served by 7 EPA-regulated water systems covering approximately 81,025 people. 149 health-based violations are on record, most recently for 2950 in 2024. Data source: EPA Safe Drinking Water Information System.
Drinking water in Johnstown, Pennsylvania is delivered through 7 EPA-regulated community water systems serving an estimated 81,025 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Johnstown shows 149 total violations across all 7 systems, of which 149 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 2950, 2456, 2920. 6 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Pennsylvania drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| GREATER JOHNSTOWN WA RIVERSIDE | 49,500 | 0 | Clean |
| HIGHLAND S & W AUTH BEAVERDAM | 22,617 | 10 | Health |
| SOUTHWESTERN CAMBRIA CNTY AUTH | 4,400 | 0 | Clean |
| EAST TAYLOR MUNI AUTH | 3,152 | 126 | Health |
| HIGHLAND S & W AUTH LLOYDELL | 723 | 0 | Clean |
| HIGHLAND S&W AUTH NORTHERN END | 463 | 0 | Clean |
| GREATER JOHNSTOWN WA SALTLICK | 170 | 13 | Health |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 2950 | 2024-04-01 |
| 2950 | 2024-04-01 |
| 2950 | 2024-01-01 |
| 2950 | 2024-01-01 |
| 2950 | 2023-10-01 |
| 2950 | 2023-10-01 |
| 2950 | 2023-10-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-04-01 |
| 2456 | 2022-04-01 |
| 2456 | 2022-04-01 |
| 2456 | 2022-04-01 |
| 2456 | 2022-04-01 |
| 2456 | 2022-04-01 |
| 2456 | 2022-04-01 |
| 2456 | 2022-01-01 |
| 2456 | 2022-01-01 |
| 2456 | 2022-01-01 |
| 2456 | 2022-01-01 |
| 2456 | 2022-01-01 |
| 2456 | 2022-01-01 |
| 2456 | 2022-01-01 |
| 2456 | 2021-10-01 |
| 2456 | 2021-10-01 |
| 2456 | 2021-10-01 |
| 2456 | 2021-10-01 |
| 2456 | 2021-10-01 |
| 2456 | 2021-10-01 |
| 2456 | 2021-10-01 |
| 2456 | 2021-07-01 |
| 2456 | 2021-07-01 |
| 2456 | 2021-07-01 |
| 2456 | 2021-07-01 |
| 2456 | 2021-07-01 |
| 2456 | 2021-04-01 |
| 2456 | 2021-04-01 |
| 2456 | 2021-04-01 |
| 2456 | 2021-04-01 |
| 2456 | 2021-04-01 |
TRI Facilities in Johnstown
| Facility | Total Releases |
|---|---|
| V&s Korns Galvanizing LLC | 284.8K lbs |
| Johnstown Wire Technologies Inc. | 270.5K lbs |
| North American Hoganas High Alloys LLC | 25.1K lbs |
| Safety-Kleen Systems Johnstown (joh) | 12.9K lbs |
| Gautier Steel Holdings Inc. | 210 lbs |
| Leonardo Drs - Laurel Technologies Ptnr | 2 lbs |
Frequently Asked Questions
Is Johnstown, Pennsylvania water safe to drink? ▼
How many water violations does Johnstown have? ▼
What contaminants were found in Johnstown water? ▼
How many water systems serve Johnstown? ▼
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Are there pollution sources near Johnstown? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.