Is Hopkinsville, KY Tap Water Safe? Quality & Contaminants

What was found in Hopkinsville'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	3500 µg/L 35% of the EPA limit 10000 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	1/2	SYR4
Fluoride	936 µg/L 23% of the EPA limit 4000 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	1/2	SYR4
Copper	210.2 µg/L 16% of the EPA limit 1300 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019 Highest in the city: 526.35 µg/L — CHRISTIAN CO WATER DISTRICT · 17,248 people · 2018	2/2	SYR4
Nitrite	100 µg/L 10% of the EPA limit 1000 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	1/2	SYR4
TTHM	89.4 µg/L 112% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	2/2	SYR4
Total Haloacetic Acids (HAA5)	68 µg/L 113% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	2/2	SYR4
Barium	46.95 µg/L 2.3% of the EPA limit 2000 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	1/2	SYR4
Lead	23.6 µg/L 157% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2018	2/2	SYR4
Selenium	2.665 µg/L 5.3% of the EPA limit 50 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	1/2	SYR4
Combined Radium (-226 And -228)	1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2017	1/2	SYR4
Arsenic	1.155 µg/L 12% of the EPA limit 10 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	1/2	SYR4
Atrazine	0.6900 µg/L 23% of the EPA limit 3 µg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2019	1/2	SYR4
6:2 Fts	0.0230 µg/L No EPA limit set Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2024	1/2	UCMR-5
Pfhxa	0.0055 µg/L No EPA limit set Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2024	1/2	UCMR-5
Pfpea	0.0049 µg/L No EPA limit set Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2024	1/2	UCMR-5
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · 41,350 people · 2024	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 Hopkinsville

Supplier	Population served
HOPKINSVILLE WATER ENVIRONMENT AUTHORITY	41,350
CHRISTIAN CO WATER DISTRICT	17,248

Frequently asked questions about Hopkinsville tap water

Is Hopkinsville tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Hopkinsville. 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 Hopkinsville?

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

What contaminants are in Hopkinsville's water?

The contaminants EPA monitoring detected in Hopkinsville include Nitrate, Fluoride, Copper, Nitrite, 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.