We read 24 results from Essex Pws’s 2025 water quality report. No results over a legal limit; 7 above a health goal or guideline.
Serves about 408 people · Water system ID MO4010255 · 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 homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.31 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1x the health goal |
| Fluoridehighest measured · range 1.27 to 1.27 · sampled 2024 · 2025 report, page 2 | 1.27 ppm | 1 ppm | 4 ppm | Above the health goal1.3x the health goal |
| Gross alpha (radioactivity)highest measured · range 5.4 to 5.4 · sampled 2024 · 2025 report, page 2 | 5.4 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Radium (combined 226 + 228)highest measured · range 2.8 to 2.8 · sampled 2024 · 2025 report, page 2 | 2.8 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 1.7 to 1.7 · sampled 2024 · 2025 report, page 2 | 1.7 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal34x the health goal |
| Radium-228highest measured · range 1.1 to 1.1 · sampled 2024 · 2025 report, page 2 | 1.1 pCi/L | 0.02 pCi/L | 5 pCi/L | Above the health goal58x the health goal |
| Total dissolved solidshighest measured · range 539 to 539 · sampled 2024 · 2025 report, page 3 | 539 ppm | — | 500 ppm guideline | Above the guideline1.1x the guideline (taste, odor or stains; not a health limit) |
| Aluminumhighest measured · range 0.14 to 0.14 · sampled 2024 · 2025 report, page 3 | 0.14 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.12 to 0.12 · sampled 2024 · 2025 report, page 2 | 0.12 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 180 to 180 · sampled 2024 · 2025 report, page 3 | 180 ppm | — | 250 ppm guideline | Within the guideline |
| Ironhighest measured · range 0.24 to 0.24 · sampled 2024 · 2025 report, page 3 | 0.24 ppm | — | 0.3 ppm guideline | Within the guideline |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Manganesehighest measured · range 0.04 to 0.04 · sampled 2024 · 2025 report, page 3 | 0.04 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.08 to 0.08 · 2025 report, page 2 | 0.08 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.87 to 7.87 · sampled 2024 · 2025 report, page 3 | 7.87 | — | — | Normal range |
| Sulfatehighest measured · range 18.2 to 18.2 · sampled 2024 · 2025 report, page 3 | 18.2 ppm | — | 250 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0041 to 0.0041 · sampled 2024 · 2025 report, page 3 | 0.0041 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 245 to 245 · sampled 2024 · 2025 report, page 3 | 245 ppm | None set | None | No health limit |
| Calciumhighest measured · range 46.3 to 46.3 · sampled 2024 · 2025 report, page 3 | 46.3 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 9.77 to 9.77 · sampled 2024 · 2025 report, page 3 | 9.77 gpg (167 ppm) | — | — | Hard |
| Magnesiumhighest measured · range 12.4 to 12.4 · sampled 2024 · 2025 report, page 3 | 12.4 ppm | None set | None | No health limit |
| Nickelhighest measured · range 1.05 to 1.05 · printed as 0.00105 MG/L · sampled 2024 · 2025 report, page 3 | 1.05 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 9.32 to 9.32 · sampled 2024 · 2025 report, page 3 | 9.32 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 144 to 144 · sampled 2024 · 2025 report, page 3 | 144 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.
Copper
Found: Copper
What removes it: Reverse osmosis.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Radium-226, Radium-228
What removes it: Reverse osmosis.
Salty taste / high TDS
Found: Total dissolved solids
What removes it: Reverse osmosis.
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