Is Winter Pk/Casselbery, FL Tap Water Safe? Quality & Contaminants

What was found in Winter Pk/Casselbery'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Fluoride	960 µg/L 24% of the EPA limit 4000 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Nitrate	495 µg/L 5% of the EPA limit 10000 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2019	1/1	SYR4
TTHM	88.77 µg/L 111% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2019	1/1	SYR4
Total Haloacetic Acids (HAA5)	55.1275 µg/L 92% of the EPA limit 60 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2019	1/1	SYR4
Barium	9.7 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Lead	7.7 µg/L 51% of the EPA limit 15 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Copper	7.63 µg/L 0.6% of the EPA limit 1300 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Di(2-ethylhexyl) Phthalate	1.9 µg/L 32% of the EPA limit 6 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Dalapon	1.59 µg/L 0.8% of the EPA limit 200 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Selenium	1 µg/L 2% of the EPA limit 50 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Arsenic	0.1000 µg/L 1% of the EPA limit 10 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Hexachlorocyclopentadiene	0.0160 µg/L 0% of the EPA limit 50 µg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2017	1/1	SYR4
Lead	0.0012 mg/L 8% of the EPA limit 0.0150 mg/L Main supplier: SEMINOLE COUNTY SOUTHEAST · 70,040 people · 2023	1/1	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 Winter Pk/Casselbery

Supplier	Population served
SEMINOLE COUNTY SOUTHEAST	70,040

Frequently asked questions about Winter Pk/Casselbery tap water

Is Winter Pk/Casselbery tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Winter Pk/Casselbery. 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 Winter Pk/Casselbery?

1 public water supplier report drinking-water monitoring for Winter Pk/Casselbery, Florida to the EPA. Each is listed above with its population served.

What contaminants are in Winter Pk/Casselbery's water?

The contaminants EPA monitoring detected in Winter Pk/Casselbery include Fluoride, Nitrate, TTHM, Total Haloacetic Acids (HAA5), Barium. 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.