We read 22 results from Nwwa Warrington Township’s 2025 water quality report. No results over a legal limit; 7 above a health goal or guideline.
Serves about 21,588 people · Water system ID PA1090070 · Read the district’s 2025 report (opens in a new tab)
Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.
Results from the 2025 report
Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.
| Contaminant | Result | Health goal | Legal limit | What it means |
|---|---|---|---|---|
| Arsenichighest measured · range 2 to 5 · sampled 2024 · Warrington wells (W) · 2025 report, page 6 | 5 ppb | 0.004 ppb | 10 ppb | Above the health goal1,250x the health goal |
| Bromatehighest running annual average · range ND to 4.5 · Forest Park WTP (FP) · 2025 report, page 6 | 2.7 ppb | 0.1 ppb | 10 ppb | Above the health goal27x the health goal |
| Copper90th percentile of 34 homes tested, 0 over the action level · Customer taps · 2025 report, page 7 | 0.45 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.5x the health goal |
| Gross alpha (radioactivity)highest measured · range ND to 0.36 · Warrington wells (W) · 2025 report, page 6 | 0.36 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| PFOA (a PFAS)highest running annual average · range ND to 2.8 · Forest Park WTP (FP) · 2025 report, page 7 | 1.9 ppt | 0.007 ppt | 14 ppt (Pennsylvania) now; 4 ppt from 2029 | Above the health goal271x the health goal |
| Radium (combined 226 + 228)highest measured · range ND to 1.14 · Warrington wells (W) · 2025 report, page 6 | 1.14 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Uraniumhighest measured · range 7.73 to 12.4 · Warrington wells (W) · 2025 report, page 6 | 12.4 ppb | 0.6 ppb | 30 ppb | Above the health goal21x the health goal |
| Bariumhighest measured · range 0.12 to 0.32 · sampled 2024 · Warrington wells (W), highest of 2 sources · 2025 report, page 6 | 0.32 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest measured · range 0.78 to 1.27 · Warrington distribution · 2025 report, page 6 | 1.27 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (HAA5)highest running annual average · range 2.93 to 23.8 · Warrington distribution · 2025 report, page 6 | 18.8 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 6.4 to 65.4 · Warrington distribution · 2025 report, page 7 | 48.9 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.1 to 0.12 · sampled 2024 · Warrington wells (W) · 2025 report, page 6 | 0.12 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range 1.51 to 2.92 · Warrington wells (W) · 2025 report, page 6 | 2.92 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · Forest Park WTP (FP) · 2025 report, page 6 | 0.03 NTU | None set | 1 NTU | Below the legal limit |
| Bromodichloromethaneaverage · range 2.2 to 13.1 · Warrington distribution · 2025 report, page 7 | 9.05 ppb | None set | None | No health limit |
| Chloroformaverage · range 2.6 to 48 · Warrington distribution · 2025 report, page 7 | 33.4 ppb | None set | None | No health limit |
| Dibromochloromethaneaverage · range 1.5 to 4.5 · Warrington distribution · 2025 report, page 7 | 2.67 ppb | None set | None | No health limit |
| Lithiumaverage · range ND to 20.6 · Finished water (all NWWA) · 2025 report, page 7 | 15.8 ppb | None set | None | No health limit |
| Nickelhighest measured · range 2 to 3 · printed as 0.003 ppm · sampled 2024 · Warrington wells (W) · 2025 report, page 6 | 3 ppb | None set | None | No health limit |
| PFBA (a PFAS)average · range ND to 12.8 · Warrington wells (W) · 2025 report, page 7 | 4.63 ppt | None set | None | No health limit |
| PFBS (a PFAS)average · range ND to 2 · Forest Park WTP (FP) · 2025 report, page 7 | 2 ppt | None set | None | No health limit |
| PFHxA (a PFAS)average · range ND to 1.79 · Warrington wells (W) · 2025 report, page 7 | 0.45 ppt | None set | None | No health limit |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper. 2 numbers we weren’t sure about are held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Nwwa Warrington Township’s water between Jan 2025 and Oct 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium20.6 ppbFound in 6 of 40 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)
Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.
What you can do
Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.
Copper
Found: Copper
What removes it: Reverse osmosis.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Uranium
What removes it: Reverse osmosis.
PFAS ("forever chemicals")
Found: PFOA (a PFAS)
What removes it: Reverse osmosis.
More districts: Pennsylvania water quality · All states · Something look wrong? Tell us