Is Westlake, FL Tap Water Safe? Quality & Contaminants

What was found in Westlake'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
TTHM	101.95 µg/L 127% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2019	1/1	SYR4
Fluoride	89.7 µg/L 2.2% of the EPA limit 4000 µg/L Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2013	1/1	SYR4
Total Haloacetic Acids (HAA5)	44.94 µg/L 75% of the EPA limit 60 µg/L Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2019	1/1	SYR4
Nitrate	40 µg/L 0.4% of the EPA limit 10000 µg/L Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2015	1/1	SYR4
Nitrite	10 µg/L 1% of the EPA limit 1000 µg/L Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2015	1/1	SYR4
PFOS	0.0110 µg/L No EPA limit set Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2023	1/1	UCMR-5
Pfpea	0.0066 µg/L No EPA limit set Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2023	1/1	UCMR-5
Pfba	0.0055 µg/L No EPA limit set Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2023	1/1	UCMR-5
Pfhxa	0.0054 µg/L No EPA limit set Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2023	1/1	UCMR-5
PFBS	0.0048 µg/L No EPA limit set Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2023	1/1	UCMR-5
PFOA	0.0045 µg/L No EPA limit set Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2023	1/1	UCMR-5
PFHXS	0.0037 µg/L No EPA limit set Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2023	1/1	UCMR-5
Pfhpa	0.0034 µg/L No EPA limit set Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2023	1/1	UCMR-5
Lead	0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L Main supplier: SEMINOLE IMPROVEMENT DISTRICT · 4,993 people · 2025	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 Westlake

Supplier	Population served
SEMINOLE IMPROVEMENT DISTRICT	4,993

Frequently asked questions about Westlake tap water

Is Westlake tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Westlake. 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 Westlake?

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

What contaminants are in Westlake's water?

The contaminants EPA monitoring detected in Westlake include TTHM, Fluoride, Total Haloacetic Acids (HAA5), Nitrate, Nitrite. 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.