Water Quality in 15901 — Johnstown, PA
EPA data for GREATER JOHNSTOWN WA RIVERSIDE
Data source: U.S. Environmental Protection Agency (EPA) SDWIS Last verified: March 16, 2026
Your Water System
ZIP code 15901 in Johnstown, Pennsylvania is served by GREATER JOHNSTOWN WA RIVERSIDE (EPA ID: PA4110034). This system provides water to approximately 49,500 people from surface water sources.
There are 7 community water systems serving this area.
Lead & Copper in Your Water
No Lead & Copper Rule sampling data available for systems serving this ZIP code.
Violation Summary
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 1, 2025 | Fecal Coliform | Monitoring | Resolved |
| July 1, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| July 1, 2025 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
| February 1, 2025 | E. coli | Monitoring | Resolved |
| February 1, 2025 | Revised Total Coliform Rule | Monitoring | Resolved |
| January 1, 2025 | E. coli | Monitoring | Resolved |
| January 1, 2025 | Revised Total Coliform Rule | Monitoring | Resolved |
| December 11, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| December 11, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| August 7, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| August 7, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| May 11, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| May 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| May 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| April 26, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| April 26, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| April 1, 2024 | Fecal Coliform | Monitoring | Resolved |
| April 1, 2024 | Fecal Coliform | Monitoring | Resolved |
| April 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Resolved |
| April 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for water systems serving this ZIP code:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 26 | No |
| Lead and Copper Rule | Treatment Technique | 21 | No |
| Revised Total Coliform Rule | Microbiological | 14 | No |
| E. coli | Microbiological | 11 | No |
| Chlorite | Disinfection Byproducts | 8 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 8 | Yes |
| Uranium | Radionuclides | 7 | No |
| Lead | Inorganic | 6 | No |
| Copper | Inorganic | 6 | No |
| Stage 1 DBP Rule | Treatment Technique | 6 | No |
| Contaminant 2031 | Other | 5 | No |
| Contaminant 2040 | Other | 5 | No |
| Contaminant 2041 | Other | 5 | No |
| Contaminant 2105 | Other | 5 | No |
| Contaminant 2110 | Other | 5 | No |
Need help with your water quality?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| GREATER JOHNSTOWN WA RIVERSIDE | PA4110034 | 49,500 | Surface water |
| HIGHLAND S & W AUTH BEAVERDAM | PA4110017 | 22,617 | Surface water |
| SOUTHWESTERN CAMBRIA CNTY AUTH | PA4110041 | 4,400 | Surface water |
| EAST TAYLOR MUNI AUTH | PA4110043 | 3,152 | Surface water |
| HIGHLAND S & W AUTH LLOYDELL | PA4110015 | 723 | Groundwater |
What You Can Do
- Request your water system’s Consumer Confidence Report (CCR) — Your utility is required to publish this annually
- Consider a home water test — Independent testing can reveal issues in your specific plumbing
- Install a certified water filter — NSF-certified filters can address specific contaminants
- Contact your water provider — Ask about current treatment and any ongoing remediation
Need help with water testing or filtration?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Other Water Quality Reports in Pennsylvania
- 15068 (New Kensington)
- 15201 (Pittsburgh) — 76 violations
- 15501 (Somerset) — 25 violations
- 15601 (Greensburg) — 18 violations
- 15701 (Indiana) — 51 violations
- 16001 (Butler) — 43 violations
- 16016 (Boyers) — 223 violations
- 16101 (New Castle) — 2 violations
- 16142 (New Wilmington) — 10 violations
- 16335 (Meadville) — 6 violations
- 16365 (Warren) — 23 violations
- 16401 (Albion) — 90 violations
- 16412 (Edinboro) — 109 violations
- 16501 (Erie) — 74 violations
- 16601 (Altoona) — 10 violations
- 16630 (Cresson) — 8 violations
- 16651 (Houtzdale) — 11 violations
- 16652 (Huntingdon) — 27 violations
- 16801 (State College) — 104 violations
- 16923 (Genesee) — 284 violations
Nearby Water Quality Reports
- 16630 (Cresson) — 20 mi — 8 violations
- 15501 (Somerset) — 23 mi — 25 violations
- 15701 (Indiana) — 24 mi — 51 violations
- 16601 (Altoona) — 30 mi — 10 violations
- 15601 (Greensburg) — 33 mi — 18 violations
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for GREATER JOHNSTOWN WA RIVERSIDE (PA4110034) on EPA.gov.
Frequently Asked Questions
Is the tap water in 15901 safe to drink?
Johnstown’s water system has recorded 7 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
Where does 15901’s water come from?
The primary water source for this area is surface water. GREATER JOHNSTOWN WA RIVERSIDE serves approximately 49,500 people.
How can I get my water tested?
Contact your local water utility for a free water quality report, or hire a certified lab for independent home water testing. The EPA recommends testing annually if you use a private well.
Does 15901 have lead in the water?
No Lead and Copper Rule sampling data is currently available in EPA records for water systems serving ZIP code 15901. If you are concerned about lead, contact your water utility or have your tap water independently tested.
What is the radon risk in 15901?
Radon zone data is not available for ZIP code 15901. The EPA recommends testing all homes for radon regardless of location, as radon levels can vary significantly even within the same neighborhood.