- EPA's UCMR 5 testing looked for 30 contaminants here and found 3.
- PFOS (a PFAS): found in 3 of 3 samples, average 6.5 ppt, highest 9 ppt (EPA UCMR 5 testing, Jul 2024–May 2025) PFOA or PFOS averaged above 4.0 ppt in UCMR 5 testing
- PFBA (a PFAS): found in 1 of 3 samples, average 2 ppt, highest 5.9 ppt (EPA UCMR 5 testing, Jul 2024–May 2025)
- PFHxS (a PFAS): found in 1 of 3 samples, average 1.2 ppt, highest 3.6 ppt (EPA UCMR 5 testing, Jul 2024–May 2025)
- Lead, 90th percentile: 1.01 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 Jan 1, 2026–Dec 31, 2026). 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 Niles tap water? What EPA records show
EPA OH7802403 · serves Trumbull County, OH · about 21,961 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
Niles City PWS (EPA OH7802403)
EPA data as of October 14, 2026. For Niles's main utility, Niles City PWS: We found no health-based violations in EPA's records for this system (OH7802403) since July 1, 2021, as of October 14, 2026. This water system averaged above 4.0 ppt for PFOA or PFOS in EPA's UCMR 5 testing.
What EPA records show for Niles City PWS, as of October 14, 2026
We found no health-based violations in EPA's records for this system (OH7802403) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Niles City PWS (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 1.01 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 Jan 1, 2026–Dec 31, 2026). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
This water system averaged above 4.0 ppt for PFOA or PFOS in EPA's UCMR 5 testing.
EPA's UCMR 5 testing looked for 30 contaminants here and found 3.
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 Niles City PWS use chloramine?
We didn't find chloramine in Niles City PWS's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)
Source: EPA SDWIS (ECHO SDWA bulk download), data as of Oct 14, 2026
Source: EPA UCMR 5 occurrence data, data as of Oct 15, 2026
These are EPA's public records for this water system, shown as of October 14, 2026. If you represent this utility, or think a record here is wrong, tell us: Report an error. If the error is in EPA's own records, your state drinking water program can correct it there, and this page updates at our next data refresh.
Sources
- EPA ECHO detailed facility report: Niles City PWS (OH7802403), July to September 2026 extract
- EPA SDWIS (ECHO SDWA bulk download), July to September 2026 extract
- EPA UCMR 5 occurrence data, samples through June 2026
Questions people ask
Is Niles tap water safe to drink?
We don't give a safe or unsafe verdict. Here is what the public data shows: EPA records for Niles's main utility, Niles City PWS, as of October 14, 2026. We found no health-based violations in EPA's records for this system (OH7802403) since July 1, 2021, as of October 14, 2026. This water system averaged above 4.0 ppt for PFOA or PFOS in EPA's UCMR 5 testing. Under EPA's 2024 PFAS rule, water systems must meet the PFOA and PFOS limits (4.0 ppt each) by April 2029; in May 2026 EPA proposed allowing extensions to April 2031. Results before then are monitoring data, not violations. A guideline and a legal limit are different things, and this is public data, not a test of your tap.
Which utility supplies water in Niles?
Niles City PWS is the main utility for Niles in EPA's records (EPA OH7802403), serving about 21,961 people (EPA SDWIS). Your water bill names your utility.
Does Niles tap water contain PFAS?
This water system averaged above 4.0 ppt for PFOA or PFOS in EPA's UCMR 5 testing. PFOS (a PFAS): found in 3 of 3 samples, average 6.5 ppt, highest 9 ppt (EPA UCMR 5 testing, Jul 2024–May 2025). Under EPA's 2024 PFAS rule, water systems must meet the PFOA and PFOS limits (4.0 ppt each) by April 2029; in May 2026 EPA proposed allowing extensions to April 2031. Results before then are monitoring data, not violations. This is public data, not a test of your tap.
How recent is this data?
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026. Data may be one to three years old and may not reflect the water at your tap. If you want your own tap tested, use a state-certified laboratory.
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