Norristown, PA water treatment
What's in Norristown's water, who supplies it, and how to fix what you find, with sources. Check your ZIP for your utility's EPA records.
Your water in Norristown
Most of ZIP 19401 is served by Pennsylvania American Water's Norristown system, which serves about 88,900 people from surface water[1]. EPA records show no health-based violations for the system, and its most recent lead sampling came in at 2 ppb at the 90th percentile, well under the 15 ppb action level[1][2]. In EPA's UCMR 5 sampling it reported short-chain PFAS (PFBA up to 7 ppt, PFBS up to 5.3 ppt) but no PFOA or PFOS above the federal limit[3].
For most Norristown homes the everyday complaint is scale rather than a health violation: water from the Norristown system tested at about 8 grains per gallon in the utility's 2023 report, which is in the hard range.
Local issues to know
- Hardness: Water from the Norristown system, measured where it enters Pennsylvania American Water's Royersford system, reported 139 mg/L as calcium carbonate, about 8.1 grains per gallon (2023 report)[4]. The USGS calls 61–120 mg/L moderately hard and 121–180 mg/L hard[5]. See hard water and our hardness by town table.
- Lead from older plumbing: in older homes, low utility sampling can't speak for every service line or solder joint[2]. See lead.
- Radon: 14% of 1,041 USGS-sampled Pennsylvania wells exceeded 4,000 pCi/L[6].
Utility or well? ZIP 19401: about 9% 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 (Norristown)
EPA water system ID PA1460046 · serves about 88,885 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)[2]
- PFAS
- EPA UCMR 5 sampling found PFBA up to 7 ppt, PFPeA up to 6.9 ppt, PFBS up to 5.3 ppt, PFHxA up to 5 ppt.[3]
Full EPA record for this system · Ask the utility for its annual Consumer Confidence Report (CCR) for hardness and other details[7].
Recommended for Norristown homes
Comparing options? See tankless vs. tank reverse osmosis and all five WÜDR systems.
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 Norristown
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
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Your recommended solution
Based on your water report and quiz answers.
Norristown water questions
Who supplies Norristown's water?
Pennsylvania American Water's Norristown system serves most of ZIP 19401. Your bill names your supplier.
Is Norristown water hard?
Yes, moderately to hard. Water from the Norristown system measured 139 mg/L (about 8 grains per gallon) in Pennsylvania American Water's 2023 report. A softener sized to that number stops most scale.
Does Norristown water have PFOA or PFOS?
EPA UCMR 5 sampling for the Norristown system reported short-chain PFAS such as PFBA and PFBS, but not PFOA or PFOS above 4.0 ppt.
Book a free water test in Norristown
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: Basic information about lead in drinking water. www.epa.gov/ground-water-and-drinking-water/basic-information-about-lead-drinking-water
- U.S. EPA: UCMR occurrence data. www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule
- Pennsylvania American Water: Royersford system (PWS ID 1150166) 2023 Annual Water Quality Report. www.amwater.com/ccr/royersford.pdf
- USGS Water Science School: Hardness of water. www.usgs.gov/special-topics/water-science-school/science/hardness-water
- 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: 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.