Coatesville water treatment
What's in Coatesville's water, where it comes from, and how to fix what you find. Check your ZIP for your utility's EPA records.
Your water in Coatesville
Coatesville is a city on the West Branch of the Brandywine Creek. The city is served by Pennsylvania American Water's Coatesville system, which treats surface water for about 37,000 people[1]. Around it, in Valley, Caln, East Fallowfield, and Sadsbury townships, about 78% of the 19320 ZIP's land area lies outside mapped service areas, so private wells are common.
The Coatesville system has no health-based violations on record and a most recent 90th-percentile lead result of 2 ppb. Its EPA UCMR 5 samples found PFBA up to 5.5 ppt and PFPeA up to 3.2 ppt, with no PFOA or PFOS reported[2]. That's one of the cleaner PFAS results in our area.
Local issues to know
- Corrosive wells: 83.3% of Chester County well samples tested for corrosivity by Penn State were outside the non-corrosive range[3], which can cause blue-green stains and leach metals from plumbing[4].
- Radon: 14% of 1,041 USGS-sampled Pennsylvania wells exceeded 4,000 pCi/L[5].
- Older homes: lead can come from household plumbing even when utility sampling is low[6]. See lead.
Utility or well? ZIP 19320: about 78% of the land area lies outside mapped public water service areas[1]. Homes in those areas are likely on private wells, which no utility tests. If that's you, start with a free in-home test.
Utility records
Pennsylvania American Water (Coatesville)
EPA water system ID PA1150106 · serves about 36,960 people · surface water (rivers, streams, or reservoirs)
- Health violations
- No health-based violations on record[1]
- Lead
- 2 ppb at the 90th percentile of its most recent lead sampling (EPA action level: 15 ppb)[6]
- PFAS
- EPA UCMR 5 sampling found PFBA up to 5.5 ppt, PFPeA up to 3.2 ppt.[2]
Full EPA record for this system · Ask the utility for its annual Consumer Confidence Report (CCR) for hardness and other details[7].
Recommended for Coatesville homes
How it works
- Analysis: your free ZIP report and quiz, or a free in-home test (always, for wells).
- Recommendation: a system matched to your results.
- Price: shown only after the analysis.
- Install: buy on your own or talk it through first.
Check your water in Coatesville
Look up what your local water utility has reported to the EPA, then take a 60-second quiz about what you see, taste, and smell at home. We'll use both to recommend the right solution.
Get your water report
Enter your ZIP code to see your utility's violations, lead testing, and PFAS results from public EPA records, explained in plain English.
Data comes from U.S. EPA and Census public records. It covers public water systems, not private wells, and it isn't a test of your home's tap. If you're on a well, a free in-home test is the best way to know what's in your water.
Water self-check quiz
Question 1 of 8Step 2
Your recommended solution
Based on your water report and quiz answers.
Coatesville water questions
Who supplies Coatesville's water?
Pennsylvania American Water's Coatesville system serves the city. Many homes in surrounding townships use private wells.
Does Coatesville water have PFAS?
EPA sampling found small amounts of PFBA and PFPeA, and no PFOA or PFOS reported.
My fixtures have blue-green stains. What does that mean?
Often corrosive water dissolving copper pipes, which is common in Chester County wells. A pH and corrosivity test is the first step; neutralizing filters are a common fix.
Book a free water test in Coatesville
Sources
- U.S. EPA: SDWIS Federal Reports (violations, lead and copper results). sdwis.epa.gov/ords/sfdw_pub/r/sfdw/sdwis_fed_reports_public/200
- U.S. EPA: UCMR occurrence data. www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule
- Penn State AASL: Chester County drinking water test summary. agsci.psu.edu/aasl/water-testing/drinking-water-testing/drinking-water-test-summaries/chester
- Penn State Extension: Corrosive water problems. extension.psu.edu/corrosive-water-problems
- USGS: High levels of radon found in some wells across Pennsylvania. www.usgs.gov/news/state-news-release/high-levels-radon-found-some-wells-across-pennsylvania
- U.S. EPA: Basic information about lead in drinking water. www.epa.gov/ground-water-and-drinking-water/basic-information-about-lead-drinking-water
- U.S. EPA: Consumer Confidence Reports (CCR) information for consumers. www.epa.gov/ccr/ccr-information-consumers
EPA records retrieved Oct 2026 from the EPA SDWIS and UCMR 5 public datasets. Utility records describe a water system, not the tap in your home. Records can lag and may be incomplete.