Is Speedway, IN Tap Water Safe? Quality & Contaminants

What was found in Speedway'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
Nitrate	1415 µg/L 14% of the EPA limit 10000 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Fluoride	1052.4 µg/L 26% of the EPA limit 4000 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Barium	283.65 µg/L 14% of the EPA limit 2000 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Copper	125.6 µg/L 9.7% of the EPA limit 1300 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2017	1/1	SYR4
TTHM	98.99 µg/L 124% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Cyanide	98 µg/L 49% of the EPA limit 200 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Total Haloacetic Acids (HAA5)	91.615 µg/L 153% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Chloroform	74.68 µg/L No EPA limit set Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Bromodichloromethane	22.54 µg/L No EPA limit set Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Dibromochloromethane	13.325 µg/L No EPA limit set Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Gross Alpha, Excl. Radon And U	3.72 pCi/L 25% of the EPA limit 15 pCi/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2015	1/1	SYR4
Lead	1.79 µg/L 12% of the EPA limit 15 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2017	1/1	SYR4
Atrazine	1.683 µg/L 56% of the EPA limit 3 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Cadmium	1.3 µg/L 26% of the EPA limit 5 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Chromium	1.1 µg/L 1.1% of the EPA limit 100 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Di(2-ethylhexyl) Phthalate	1.03 µg/L 17% of the EPA limit 6 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Simazine	0.4460 µg/L 11% of the EPA limit 4 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Antimony, Total	0.4000 µg/L 6.7% of the EPA limit 6 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
2,4-D	0.2000 µg/L 0.3% of the EPA limit 70 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Hexachlorocyclopentadiene	0.1000 µg/L 0.2% of the EPA limit 50 µg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2019	1/1	SYR4
Pfba	0.0180 µg/L No EPA limit set Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2025	1/1	UCMR-5
Pfpea	0.0054 µg/L No EPA limit set Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2025	1/1	UCMR-5
Pfhxa	0.0040 µg/L No EPA limit set Main supplier: SPEEDWAY WATER WORKS · 10,578 people · 2025	1/1	UCMR-5
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SPEEDWAY WATER WORKS · 10,578 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 Speedway

Supplier	Population served
SPEEDWAY WATER WORKS	10,578

Frequently asked questions about Speedway tap water

Is Speedway tap water safe to drink?

EPA testing detected 24 contaminants in the water serving Speedway. 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 Speedway?

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

What contaminants are in Speedway's water?

The contaminants EPA monitoring detected in Speedway include Nitrate, Fluoride, Barium, Copper, TTHM. 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.