We read 11 results from South Brunswick Twp W Di’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 45,450 people · Water system ID NJ1221004 · Read the district’s 2025 report (opens in a new tab)
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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 |
|---|---|---|---|---|
| PFOA (a PFAS)highest running annual average · range 2.59 to 11.1 · listed as a violation in the report · South Brunswick wells · 2025 report, page 3 | 11.1 ppt | 0.007 ppt | 14 ppt (New Jersey) now; 4 ppt from 2029 | Above the federal limit that takes effect in 20292.8x the 4 ppt federal limit that takes effect in 2029; below the 14 ppt New Jersey limitNot a violation yet: EPA's 4 ppt limit is final, but water systems don't have to meet it until 2029. |
| PFOS (a PFAS)highest running annual average · range ND to 1.09 · listed as a violation in the report · South Brunswick wells · 2025 report, page 3 | 1.09 ppt | 1 ppt | 13 ppt (New Jersey) now; 4 ppt from 2029 | Above the health goal1.1x the health goal |
| Bariumhighest measured · listed as a violation in the report · printed as 43.4 ppb · South Brunswick wells · 2025 report, page 3 | 0.04 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorineaverage · listed as a violation in the report · Distribution system · 2025 report, page 4 | 1.12 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested · listed as a violation in the report · Customer taps · 2025 report, page 3 | 0.19 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range ND to 30.5 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 13 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range ND to 47.9 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 43 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.34 to 0.68 · listed as a violation in the report · South Brunswick wells · 2025 report, page 3 | 0.68 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of homes tested · listed as a violation in the report · Customer taps · 2025 report, page 3 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · range 1.91 to 3.97 · listed as a violation in the report · South Brunswick wells · 2025 report, page 3 | 3.97 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sodiumhighest measured · range 4.6 to 8.8 · listed as a violation in the report · South Brunswick wells · 2025 report, page 5 | 8.8 ppm | 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in South Brunswick Twp W Di’s water between May 2023 and Jul 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOA23 pptFound in 6 of 9 samples · highest resultHighest sample is above the 14 ppt New Jersey limit. Compliance is judged on averages, not one sample.
- PFBS3.8 pptFound in 2 of 9 samples · highest resultNo federal limit in force for this one
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.
PFAS ("forever chemicals")
Found: PFOA (a PFAS), PFOS (a PFAS), PFOA (EPA testing)
What removes it: Reverse osmosis.
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