Tap water · FL
Miami-Dade Water and Sewer Department
EPA system ID FL4130871 · serves about 2,377,460 people. Every US utility must publish an annual water quality report — here’s the official one (2025), and below it, our plain-English translation.
Read the official report →What Miami-Dade Water and Sewer Department found in 2025
21 detected analytes from the utility’s own annual report, hand-normalized — 3 were near or over a limit (flagged below).
| Detected | Level | Limit | % of limit | Status |
|---|---|---|---|---|
| Perfluorooctane sulfonate (PFOS) — new federal standard, initial monitoring | 33 ppt | 4 ppt | 825% | Over limit |
| Perfluorooctanoic acid (PFOA) — new federal standard, initial monitoring | 13 ppt | 4 ppt | 325% | Over limit |
| Hazard Index PFAS (HFPO-DA, PFBS, PFHxS, and PFNA) — new federal standard, initial monitoring | 1 unitless | 1 unitless | 100% | Near limit |
| perfluorohexanesulfonic acid (PFHxS) — new federal standard, initial monitoring | 7 ppt | 10 ppt | 70% | Within limit |
| Total Trihalomethanes | 50 ppb | 80 ppb | 63% | Within limit |
| Chloramines | 2.5 ppm | 4 ppm | 63% | Within limit |
| Haloacetic Acids | 34 ppb | 60 ppb | 57% | Within limit |
| perfluorononanoic acid (PFNA) — new federal standard, initial monitoring | 5 ppt | 10 ppt | 50% | Within limit |
| Fluoride | 1 ppm | 4 ppm | 25% | Within limit |
| Lead (at tap) | 3.2 ppb | 15 ppb | 21% | Within limit |
| Sodium | 33 ppm | 160 ppm | 21% | Within limit |
| Combined Radium | 1 pCi/L | 5 pCi/L | 20% | Within limit |
| Arsenic | 1 ppb | 10 ppb | 10% | Within limit |
| Copper (at tap) | 0.07 ppm | 1.3 ppm | 5% | Within limit |
| Uranium | 1 ppb | 30 ppb | 3% | Within limit |
| Nitrate (as N) | 0.3 ppm | 10 ppm | 3% | Within limit |
| Nitrite (as N) | 0.02 ppm | 1 ppm | 2% | Within limit |
| Atrazine | 0.02 ppb | 3 ppb | 1% | Within limit |
| Barium | 0.006 ppm | 2 ppm | 0% | Within limit |
| Radon | 86 pCi/L | — | — | No federal limit |
| Total Coliform Bacteria | 0 | — | — | No federal limit |
Levels and limits are as printed in the utility’s report (“limit” is the EPA MCL, action level, residual limit, or secondary guideline that applies to that row; “ND” = not detected). Utilities publish these reports annually — we re-check every covered utility each July, after the federal publication deadline. Detected doesn’t mean dangerous — most detections sit far below their limits. This is education, not medical advice.
Your tap, if it were a bottle
How Miami-Dade Water and Sewer Department water stacks up against the bottled aisle
Same minerals, same units — the tap values below come from the utility’s report, placed next to the closest match in our bottled-water database.
| Mineral | Your tap | Closest bottled match |
|---|---|---|
| Sodium | 33 mg/L | San Pellegrino at 32 mg/L |
Tap values are the headline levels from the utility’s annual report (often a highest or average figure); bottled values are label- or report-derived. A closest match is a numeric comparison, not an equivalence or an endorsement.
Zip codes covered
33122 · 33125 · 33126 · 33127 · 33128 · 33129 · 33130 · 33131 · 33132 · 33133 · 33134 · 33135 · 33136 · 33137 · 33138 · 33142 · 33143 · 33145 · 33146 · 33147 · 33149 · 33150 · 33156 · 33157 · 33158 · 33165 · 33172 · 33173 · 33174 · 33175 · 33176 · 33177 · 33182 · 33183 · 33184 · 33185 · 33186 · 33189 · 33190 · 33193 · 33196
Boundary zips partially served by other systems are deliberately unlisted — check your exact zip.