Johnstown
Tap water in Johnstown comes from 4 water systems: 2 low risk, 2 medium risk. Had a health violation recently, since fixed where the rating is medium risk.
4 official water systems are listed for this town. Each keeps its own rating.
Is it safe?
Highland S & W Auth Beaverdam
Medium risk
Had a health violation recently, since fixed
3 health-based violations began in the last 3 years. 0 are still unresolved.
Serves about 22,617 people.
Source water: surface water.
Last health violation began 2024-04-01.
The violations involved TTHM.
Is it safe?
Southwestern Cambria Cnty Auth
Medium risk
Had a health violation recently, since fixed
2 health-based violations began in the last 3 years. 0 are still unresolved.
Serves about 4,400 people.
Source water: surface water.
Last health violation began 2026-04-01.
The violations involved TTHM.
Is it safe?
Greater Johnstown WA Riverside
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 49,500 people.
Source water: surface water.
Is it safe?
Jackson Twp Water Auth
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,236 people.
Source water: surface water.
Last health violation began 2022-10-01.
Source
US EPA Safe Drinking Water Information System.
Period covered: October 2023 to September 2026.
Covers community water systems serving 3,300 people or more. The rating uses health-based violations of federal drinking-water standards in the last three years, and whether those violations have been fixed. Each system is placed at a town it serves, so positions are approximate.
Common questions
Can I drink the tap water in Johnstown, Pennsylvania?
Tap water in Johnstown comes from 4 water systems: 2 low risk, 2 medium risk. Had a health violation recently, since fixed where the rating is medium risk.
Where do these ratings come from?
US EPA Safe Drinking Water Information System. Period covered: October 2023 to September 2026.