- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 4 of 4 samples, average 24 µg/L, highest 29.8 µg/L (EPA UCMR 5 testing, Mar 2023–Sep 2023)
- Lead, 90th percentile: 0.55 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jun 1, 2025–Sep 30, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Public EPA test results
Can you drink Slippery Rock tap water? What EPA records show
EPA PA5100079 · serves Butler County, PA · about 15,778 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Slippery Rock Muni Auth (EPA PA5100079)
EPA data as of October 14, 2026. For Slippery Rock's main utility, Slippery Rock Muni Auth: We found no health-based violations in EPA's records for this system (PA5100079) since July 1, 2021, as of October 14, 2026. PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for Slippery Rock Muni Auth, as of October 14, 2026
We found no health-based violations in EPA's records for this system (PA5100079) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Slippery Rock Muni Auth (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 0.55 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jun 1, 2025–Sep 30, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Slippery Rock Muni Auth use chloramine?
We didn't find chloramine in Slippery Rock Muni Auth's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.