Tap WaterIndex

← Florida

Tap water quality report

Lake Mary, FL

EPA monitoring detected 20 contaminants across the 2 water suppliers serving Lake Mary. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
36,991
people served
20
contaminants found
Florida rankings Lead in Florida PFAS in Florida

What was found in Lake Mary's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1700 µg/L 43%
of the EPA limit 4000 µg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2017
2/2 SYR4
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2019
Highest in the city: 340 µg/L — LAKE MARY, CITY OF · 17,066 people · 2019
2/2 SYR4
TTHM
69.99499999999999 µg/L 87%
of the EPA limit 80 µg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
35.705999999999996 µg/L 60%
of the EPA limit 60 µg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2019
2/2 SYR4
1,1-Dichloroethylene
17.4 µg/L 249%
of the EPA limit, at the 95th percentile of samples — 7 µg/L
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2019
1/2 SYR4
Barium
9.079999999999998 µg/L 0.5%
of the EPA limit 2000 µg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2017
Highest in the city: 9.1 µg/L — LAKE MARY, CITY OF · 17,066 people · 2019
2/2 SYR4
Copper
3.1 µg/L 0.2%
of the EPA limit 1300 µg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2017
Highest in the city: 5.96 µg/L — LAKE MARY, CITY OF · 17,066 people · 2019
2/2 SYR4
Xylenes, Total
2.9 µg/L 0%
of the EPA limit 10000 µg/L
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2019
1/2 SYR4
Dalapon
1.541 µg/L 0.8%
of the EPA limit 200 µg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2017
1/2 SYR4
Ethylbenzene
0.6700 µg/L 0.1%
of the EPA limit 700 µg/L
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2019
1/2 SYR4
Lead
0.3950 µg/L 2.6%
of the EPA limit 15 µg/L
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2019
1/2 SYR4
Arsenic
0.1000 µg/L 1%
of the EPA limit 10 µg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2017
Highest in the city: 0.2950 µg/L — LAKE MARY, CITY OF · 17,066 people · 2019
2/2 SYR4
1,2,4-Trichlorobenzene
0.2100 µg/L 0.3%
of the EPA limit 70 µg/L
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2019
1/2 SYR4
Beryllium, Total
0.2000 µg/L 5%
of the EPA limit 4 µg/L
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2019
1/2 SYR4
Antimony, Total
0.1000 µg/L 1.7%
of the EPA limit 6 µg/L
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2019
1/2 SYR4
Pfhxa
0.0042 µg/L
No EPA limit set
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2024
1/2 UCMR-5
Pfpea
0.0041 µg/L
No EPA limit set
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2024
1/2 UCMR-5
PFBS
0.0038 µg/L
No EPA limit set
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2024
1/2 UCMR-5
PFHXS
0.0036 µg/L
No EPA limit set
Highest in the city: LAKE MARY, CITY OF · 17,066 people · 2024
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: SEMINOLE COUNTY NORTHEAST · 19,925 people · 2023
Highest in the city: 0.0021 mg/L — LAKE MARY, CITY OF · 17,066 people · 2023
2/2 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 95th percentile of the system's samples — 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 Lake Mary

SupplierPopulation served
SEMINOLE COUNTY NORTHEAST 19,925
LAKE MARY, CITY OF 17,066

Frequently asked questions about Lake Mary tap water

Is Lake Mary tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Lake Mary. 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 Lake Mary?

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

What contaminants are in Lake Mary's water?

The contaminants EPA monitoring detected in Lake Mary include Fluoride, Nitrate, TTHM, Total Haloacetic Acids (HAA5), 1,1-Dichloroethylene. The full list, with the level at the main supplier 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.