Drinking water quality · 2023
· Verified
What's in Hialeah, FL tap water
6 contaminants in Hialeah, FL's water sat at or above a federal limit, led by PFOS at 9.5x the limit.
- !6 contaminants at or above a federal limit — worst is PFOS at 9.5x
- !1 contaminant within 20% of a limit
- !17 of 27 core regulated contaminants reported — 10 never appear in this report
- ✓No open federal violations
+How this score is calculated
Every system starts at 100. Points come off for measured levels, for the federal violation record, and for how much of the core regulated set the utility actually reported. All three inputs are the utility's own published numbers and EPA's own records.
- −60 contaminants at or above a federal limit
- −4 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −0 health-based violations resolved in the last 5 years
- −3 core regulated contaminants never reported (17/27)
A 90–100 · B 80–89 · C 70–79 · D 60–69 · F below 60. A system reporting under a third of the core set is capped at C however clean its numbers look — a short report is not a clean bill of health.
Full grading methodology, constant for constant →What to worry about
- PFOS9.5× the federal limit0–38 ng/L · limit 4 ng/L
Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
higher than 95% of U.S. systems
- PFOA7.5× the federal limit0–30 ng/L · limit 4 ng/L
Linked to cancer, liver damage, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
higher than 95% of U.S. systems
- Thallium4.5× the federal limit0–0.009 mg/L · limit 0.002 mg/L
- Dehp3.2× the federal limit0.019 mg/L · limit 0.006 mg/L
- HAA51.6× the federal limit46.52–98 ug/L · limit 60 ug/L
Long-term exposure above the federal limit is associated with an increased cancer risk.
higher than 95% of U.S. systems
- Chloramine1.5× the federal limit0–5.9 mg/L · limit 4 mg/L
Holds disinfection further into the pipe network, but is regulated under the same residual-disinfectant cap as chlorine.
higher than 95% of U.S. systems
- Chlorine95% of the federal limit3.8 mg/L · limit 4 mg/L
Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
higher than 95% of U.S. systems
+18 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| TTHM | 11–58 ug/L | 80 ug/L |
| Fluoride | 0.1–0.9 mg/L | 4 mg/L |
| Arsenic | 0–1 ug/L | 10 ug/L |
| Combined Radium | 0.3 pCi/L | 5 pCi/L |
| Gross Alpha | 0.8 pCi/L | 15 pCi/L |
| Nitrite | 0.05 mg/L | 1 mg/L |
| Nitrate | 0.01–0.4 mg/L | 10 mg/L |
| Uranium | 0–1 ug/L | 30 ug/L |
| Selenium | 0–1 ug/L | 50 ug/L |
| Barium | 0.006–0.02 mg/L | 2 mg/L |
| Chromium | 0–0.7 ug/L | 100 ug/L |
| Antimony | 0.005 ug/L | 6 ug/L |
| Lead | 0.003 ug/L | 15 ug/L |
| Copper | 0.09 % | 1.3 % |
| Nickel | 0.008 ug/L | — |
| Sodium | 25–51 mg/L | — |
| Total Coliform | 0 | — |
| Radon | 0–229 pCi/L | — |
What this report doesn't tell you
10 of the 27 contaminants a community water system normally reports do not appear anywhere in Hialeah, FL's data. Absent is not the same as absent-from-the-water — it means nobody published a number.