Is Mansfield, OH tap water safe?
Supplied by Mansfield City Water System · serves 51,000 people (17,862 connections) · Surface water · EPA ID OH7002914
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data.
- PFAS
- Not detectedNone of 29 PFAS found above EPA's reporting limits in 4 samples (2023–2025).
- Lead
- Below action level0 ppb (parts per billion) at the 90th percentile: 9 in 10 homes sampled were at or below it. Action level 15 ppb, falling to 10 ppb in Nov 2027. Monitoring period Jan 2026 – now, still in progress (results reported so far). Your home's pipes can make yours higher.
- Violations
- Resolved7 health-based violations since 2016, most recently Dec 2025. 2 required an urgent public notice within 24 hours (the kind behind boil-water notices), most recently Jan 2025. What to do if you get a notice.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Got a boil-water or do-not-drink notice? What each notice means and what to do.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Mansfield City Water System's annual water quality report (Consumer Confidence Report). It lists every regulated contaminant tested and is usually on the utility's website or mailed with your bill, and you can also request it at (419) 755-9628. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 1 entry point tested Aug 2023 to May 2024. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Not detected Limit 4 ppt | – |
| PFOS Not detected Limit 4 ppt | – |
| PFHxS Not detected Limit 10 ppt | – |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Not detected Guideline 3,000 ppt | – |
29 PFAS tested, 0 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Not detected in 4 samples (reporting limit 9 ppb). About lithium.
Lead and copper
Latest 90th percentile: 0 ppb lead (Jan 2026 – now (in progress)). Below action level
1 reported result in EPA's records is far above anything physically plausible (likely a unit or data-entry error) and is not used in the summary.
Highest since 2016: 3.8 ppb (Dec 2016).
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2026 – now (in progress) | 0 ppb |
| Jan 2025 – Dec 2025 | 2 ppb |
| Jan 2024 – Jun 2024 | 0 ppb |
Earlier results (9)
| Jul 2023 – Dec 2023 | 2.7 ppb |
| Jan 2022 – Dec 2022 | 0 ppb |
| Jan 2021 – Dec 2021 | 3.5 ppb |
| Jan 2020 – Dec 2020 | 2.2 ppb |
| Jan 2019 – Jun 2019 | 2.6 ppb |
| Jul 2018 – Dec 2018 | 2.1 ppb |
| Jan 2014 – Dec 2016 | 3.8 ppb |
| Jan 2011 – Dec 2013 | 4.3 ppb |
| Jan 2008 – Dec 2010 | 3.98 ppb |
Lead comes from pipes and fixtures, not the source water, so it varies home to home. The 90th percentile means 9 in 10 sampled homes were at or below it. More on lead.
Violations
| When | What happened |
|---|---|
| May 2025 – Dec 2025 2 times | A required step to remove or kill germs (filtration, disinfection or fixing a contaminated well) was not done properly. EPA record: Long Term 2 Enhanced Surface Water Treatment Rule · Treatment Technique (SWTR and GWR) (limit ) Resolved |
| Dec 2019 – Jan 2025 2 times | The water was cloudier than allowed at least once. Cloudiness can shield germs from disinfection. Urgent public notice required What that means EPA record: Interim Enhanced Surface Water Treatment Rule · Single Turbidity Exceed (Enhanced SWTR) (limit ) Resolved |
| Oct 2024 | The system did not publish the required inventory of lead service lines (due October 2024). It says nothing about lead levels in the water. EPA record: Lead and copper rule revisions · LSL Inventory Resolved |
| Jan 2018 – Jan 2023 2 times | The water chemistry that keeps lead from dissolving out of pipes was outside the range the state set. EPA record: Lead and Copper Rule · WQP Entry Point/Tap Treatment Technique Non-Compliance (limit TT ) Resolved |
1 unresolved monitoring or reporting violation: Public Notice.
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Earlier EPA testing (2013–2020)
| Contaminant | Highest | Guideline |
|---|---|---|
| Manganese | 7.41 ppb | 300 ppb |
| Chromium-6 | 0.035 ppb | – |
| Strontium | 0.28 ppm | 1.5 ppm |
| Molybdenum | 3 ppb | 40 ppb |
Where it serves
Mansfield
ZIP codes the system reported serving: 44901, 44902, 44903, 44904, 44905, 44906, 44907
Nearby utilities
- Elyria Water Department Lorain · 50 mi
- Lorain City Public Water System Lorain · 50 mi
- Rural Lorain County Water Authority Lorain · 50 mi
- Aqua Ohio – Massillon Public Water System Massillon · 53 mi
- Del-Co Water Company, Inc. Dublin · 55 mi
- Akron City Public Water System Akron · 57 mi
Questions
Is Mansfield tap water safe to drink?
Most of Mansfield gets its water from Mansfield City Water System. Mansfield City Water System had 7 health-based violations since 2016, all since resolved. EPA testing found no PFAS above the federal limits. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does Mansfield water have PFAS?
EPA tested Mansfield City Water System for 29 PFAS between Aug 2023 and May 2024 and none were detected above the reporting limits (about 2 to 20 ppt depending on the chemical).
What is the lead level in Mansfield water?
The most recent 90th-percentile lead result for Mansfield City Water System is 0 ppb, for the monitoring period that began Jan 2026 (still in progress). The federal action level is 15 ppb, falling to 10 ppb in November 2027. The 90th percentile means 9 in 10 homes sampled were at or below this number. Individual homes can be higher.
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for OH7002914: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID OH7002914).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask Mansfield City Water System at (419) 755-9628, or see EPA's guide to finding it.
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.