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Tap water quality report

Miami, FL

EPA monitoring detected 30 contaminants across the 6 water suppliers serving Miami. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

6
water suppliers
2,425,670
people served
30
contaminants found
Florida rankings Lead in Florida PFAS in Florida

What was found in Miami's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
7500 µg/L 75%
of the EPA limit 10000 µg/L
 6/6 SYR4
Fluoride
850 µg/L 21%
of the EPA limit 4000 µg/L
 6/6 SYR4
TTHM
187 µg/L 234%
of the EPA limit, in the worst sample — 80 µg/L
 6/6 SYR4
Cyanide
170 µg/L 85%
of the EPA limit 200 µg/L
 1/6 SYR4
Total Haloacetic Acids (HAA5)
120.72 µg/L 201%
of the EPA limit, in the worst sample — 60 µg/L
 6/6 SYR4
Nitrite
78 µg/L 7.8%
of the EPA limit 1000 µg/L
 3/6 SYR4
Barium
35 µg/L 1.8%
of the EPA limit 2000 µg/L
 6/6 SYR4
Copper
32 µg/L 2.5%
of the EPA limit 1300 µg/L
 6/6 SYR4
Combined Uranium
16.241 µg/L 54%
of the EPA limit 30 µg/L
 3/6 SYR4
Gross Alpha, Excl. Radon And U
8.3 pCi/L 55%
of the EPA limit 15 pCi/L
 3/6 SYR4
Lead
2.2 µg/L 15%
of the EPA limit 15 µg/L
 4/6 SYR4
Arsenic
2.1 µg/L 21%
of the EPA limit 10 µg/L
 6/6 SYR4
Chromium
2.1 µg/L 2.1%
of the EPA limit 100 µg/L
 5/6 SYR4
Selenium
1.6 µg/L 3.2%
of the EPA limit 50 µg/L
 3/6 SYR4
Dalapon
1.1 µg/L 0.6%
of the EPA limit 200 µg/L
 1/6 SYR4
Antimony, Total
0.5000 µg/L 8.3%
of the EPA limit 6 µg/L
 3/6 SYR4
P-Dichlorobenzene
0.3600 µg/L 0.5%
of the EPA limit 75 µg/L
 1/6 SYR4
6:2 Fts
0.1900 µg/L
No EPA limit set
 1/6 UCMR-5
Cadmium
0.1000 µg/L 2%
of the EPA limit 5 µg/L
 1/6 SYR4
Pfhxa
0.0580 µg/L
No EPA limit set
 2/6 UCMR-5
Pfpea
0.0560 µg/L
No EPA limit set
 2/6 UCMR-5
PFOS
0.0374 µg/L
No EPA limit set
 2/6 UCMR-5
Pfba
0.0220 µg/L
No EPA limit set
 2/6 UCMR-5
Pfhpa
0.0200 µg/L
No EPA limit set
 2/6 UCMR-5
PFBS
0.0170 µg/L
No EPA limit set
 2/6 UCMR-5
PFOA
0.0140 µg/L
No EPA limit set
 2/6 UCMR-5
8:2 Fts
0.0096 µg/L
No EPA limit set
 1/6 UCMR-5
PFHXS
0.0094 µg/L
No EPA limit set
 2/6 UCMR-5
PFNA
0.0065 µg/L
No EPA limit set
 1/6 UCMR-5
Lead
0.0031 mg/L 21%
of the EPA limit 0.0150 mg/L
 6/6 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Miami

SupplierPopulation served
MDWASA - MAIN SYSTEM 2,377,460
MDWASA/REX UTILITIES 45,200
AMERICANA VILLAGE 2,500
SILVER PALM MOBILE HOMES 250
REDLAND MHC, LLC 160
JONES' TRAILER PARK 100

Frequently asked questions about Miami tap water

Is Miami tap water safe to drink?

EPA testing detected 30 contaminants in the water serving Miami. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Miami?

6 public water suppliers report drinking-water monitoring for Miami, Florida to the EPA. Each is listed above with its population served.

What contaminants are in Miami's water?

The contaminants EPA monitoring detected in Miami include Nitrate, Fluoride, TTHM, Cyanide, Total Haloacetic Acids (HAA5). The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.