We read 12 results from Sjcu-Cr214 Mainland Wtp’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 61,310 people · Water system ID FL2554447 · 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 |
|---|---|---|---|---|
| Gross alpha (radioactivity)highest measured · range ND to 3.3 · listed as a violation in the report · sampled 2024 · Treatment plant · 2025 report, page 3 | 3.3 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of 36 homes tested, 0 over the action level · listed as a violation in the report · sampled 2024 · Customer taps · 2025 report, page 4 | 0.62 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal3.1x the health goal |
| Radium (combined 226 + 228)highest measured · range ND to 1.7 · listed as a violation in the report · sampled 2024 · Treatment plant · 2025 report, page 3 | 1.7 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · range 0.01 to 0.01 · listed as a violation in the report · sampled 2024 · Treatment plant · 2025 report, page 3 | 0.01 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloraminehighest running annual average · range 0.8 to 3.4 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 3.4 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 36 homes tested, 0 over the action level · listed as a violation in the report · sampled 2024 · Customer taps · 2025 report, page 4 | 0.05 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 3.08 to 7.57 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 7.57 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 22.8 to 25.1 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 25.1 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.4 to 1 · listed as a violation in the report · sampled 2024 · Treatment plant · 2025 report, page 3 | 1 ppm | 1 ppm | 4 ppm | Below the health goal |
| Mercuryhighest measured · range ND to 0.1 · listed as a violation in the report · sampled 2024 · Treatment plant · 2025 report, page 3 | 0.1 ppb | 1.2 ppb | 2 ppb | Below the health goal |
| Nitrate (as N)highest measured · range 0.15 to 0.15 · listed as a violation in the report · Treatment plant · 2025 report, page 3 | 0.15 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sodiumhighest measured · range 85 to 110 · listed as a violation in the report · sampled 2024 · Treatment plant · 2025 report, page 3 | 110 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 Sjcu-Cr214 Mainland Wtp’s water between Nov 2023 and May 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium9.2 ppbFound in 1 of 2 samples · highest resultBelow EPA’s health reference level of 10 ppb
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.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228)
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
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