We read 13 results from Andover Water Dept’s 2024 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 36,569 people · Water system ID MA3009000 · Read the district’s 2024 report (opens in a new tab)
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Results from the 2024 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 |
|---|---|---|---|---|
| Bromateaverage · range ND to 2 · listed as a violation in the report · Treated water · 2024 report, page 5 | 1.13 ppb | 0.1 ppb | 10 ppb | Above the health goal11x the health goal |
| Lead90th percentile of 32 homes tested, 0 over the action level · Customer taps · 2024 report, page 9 | 4.3 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal21x the health goal |
| Bariumsingle sample · listed as a violation in the report · printed as 11 ppb · Treated water · 2024 report, page 5 | 0.01 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest measured · range 0.05 to 1.65 · listed as a violation in the report · Distribution system · 2024 report, page 6 | 1.65 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 32 homes tested, 0 over the action level · printed as 54 ppb · Customer taps · 2024 report, page 9 | 0.05 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 3.4 to 12 · listed as a violation in the report · Distribution system · 2024 report, page 6 | 11 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 32 to 66 · listed as a violation in the report · Distribution system · 2024 report, page 6 | 61 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range ND to 0.84 · listed as a violation in the report · Treated water · 2024 report, page 5 | 0.84 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)single sample · listed as a violation in the report · Treated water · 2024 report, page 5 | 0.13 ppm | 10 ppm | 10 ppm | Below the health goal |
| Perchloratesingle sample · listed as a violation in the report · Treated water · 2024 report, page 5 | 0.12 ppb | 1 ppb | 6 ppb | Below the health goal |
| PFAS (total of measured)highest running annual average · range 2 to 5 · listed as a violation in the report · Treated water · 2024 report, page 10 | 3 ppt | None set | None | No health limit |
| PFHxA (a PFAS)average · range 3 to 4 · Treated water · 2024 report, page 10 | 3 ppt | None set | None | No health limit |
| Sodiumsingle sample · Treated water · 2024 report, page 8 | 54 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.
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: Lead
What removes it: Certified carbon block or RO.
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