We read 16 results from Bridgewater Water Department’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 28,633 people · Water system ID MA4042000 · 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 |
|---|---|---|---|---|
| Copper90th percentile of 59 homes tested, 0 over the action level · Customer taps · 2025 report, page 3 | 0.67 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal2.2x the health goal |
| Gross alpha (radioactivity)highest measured · range ND to 0.63 · listed as a violation in the report · Sources · 2025 report, page 3 | 0.63 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of 59 homes tested, 0 over the action level · Customer taps · 2025 report, page 3 | 3.2 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal16x the health goal |
| Tetrachloroethylene (PCE)highest measured · range 0.05 to 0.13 · listed as a violation in the report · Sources · 2025 report, page 3 | 0.13 ppb | 0.06 ppb | 5 ppb | Above the health goal2.2x the health goal |
| Chlorinehighest running annual average · range 0.35 to 0.57 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 0.57 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (HAA5)highest running annual average · range 8.8 to 32.3 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 20 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 20 to 66 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 56 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)highest measured · range 1.42 to 2.28 · listed as a violation in the report · Sources · 2025 report, page 3 | 2.28 ppm | 10 ppm | 10 ppm | Below the health goal |
| Perchloratehighest measured · range ND to 0.6 · listed as a violation in the report · Sources · 2025 report, page 3 | 0.6 ppb | 1 ppb | 6 ppb | Below the health goal |
| Bromodichloromethaneaverage · range ND to 9.4 · Distribution system · 2025 report, page 4 | 5.51 ppb | None set | None | No health limit |
| Chloroformaverage · range ND to 9.7 · Distribution system · 2025 report, page 4 | 5.65 ppb | None set | None | No health limit |
| Dibromochloromethaneaverage · range ND to 4.5 · Distribution system · 2025 report, page 4 | 2.83 ppb | None set | None | No health limit |
| Hardnessaverage · sampled 2023 · Sources · 2025 report, page 4 | 4.71 gpg (80.5 ppm) | — | — | Moderately hard |
| PFBS (a PFAS)highest running annual average · range 1.8 to 11.3 · Sources · 2025 report, page 5 | 6.72 ppt | None set | None | No health limit |
| PFHxA (a PFAS)highest running annual average · range 2.24 to 12 · Sources · 2025 report, page 5 | 9.08 ppt | None set | None | No health limit |
| Sodiumaverage · range 57 to 98.2 · Sources · 2025 report, page 4 | 77.6 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. 1 number we weren’t sure about is held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Bridgewater Water Department’s water between Jun 2023 and Dec 2023. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOA9 pptFound in 6 of 6 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFOS7 pptFound in 2 of 6 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFHxS4 pptFound in 2 of 6 samples · highest resultNo federal limit in force for this one
- PFBS5 pptFound in 4 of 6 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.
Lead
Found: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
Radium and uranium
Found: Gross alpha (radioactivity)
What removes it: Reverse osmosis.
Industrial chemicals and pesticides
Found: Tetrachloroethylene (PCE)
What removes it: Carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (EPA testing), PFOS (EPA testing)
What removes it: Reverse osmosis.
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