Is Arlington, KY Tap Water Safe? Quality & Contaminants

What was found in Arlington'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	4300 µg/L 43% of the EPA limit 10000 µg/L Highest in the city: ARLINGTON WATER DEPARTMENT · 301 people · 2019	1/2	SYR4
Nitrate-Nitrite	3800 µg/L 38% of the EPA limit 10000 µg/L Highest in the city: ARLINGTON WATER DEPARTMENT · 301 people · 2014	1/2	SYR4
Fluoride	2460 µg/L 62% of the EPA limit 4000 µg/L Highest in the city: ARLINGTON WATER DEPARTMENT · 301 people · 2019	1/2	SYR4
Copper	67.11 µg/L 5.2% of the EPA limit 1300 µg/L Main supplier: MILBURN WATER DISTRICT · 500 people · 2017 Highest in the city: 166 µg/L — ARLINGTON WATER DEPARTMENT · 301 people · 2019	2/2	SYR4
Barium	25.95 µg/L 1.3% of the EPA limit 2000 µg/L Highest in the city: ARLINGTON WATER DEPARTMENT · 301 people · 2017	1/2	SYR4
TTHM	14.5 µg/L 18% of the EPA limit 80 µg/L Main supplier: MILBURN WATER DISTRICT · 500 people · 2019 Highest in the city: 16.95 µg/L — ARLINGTON WATER DEPARTMENT · 301 people · 2019	2/2	SYR4
Lead	7.4 µg/L 49% of the EPA limit 15 µg/L Main supplier: MILBURN WATER DISTRICT · 500 people · 2017	2/2	SYR4
Total Haloacetic Acids (HAA5)	4.02 µg/L 6.7% of the EPA limit 60 µg/L Main supplier: MILBURN WATER DISTRICT · 500 people · 2019	2/2	SYR4
Combined Radium (-226 And -228)	2.1 pCi/L 42% of the EPA limit 5 pCi/L Highest in the city: ARLINGTON WATER DEPARTMENT · 301 people · 2017	1/2	SYR4
Gross Alpha, Excl. Radon And U	1.547 pCi/L 10% of the EPA limit 15 pCi/L Highest in the city: ARLINGTON WATER DEPARTMENT · 301 people · 2017	1/2	SYR4
Lead	0.0023 mg/L 15% of the EPA limit 0.0150 mg/L Main supplier: MILBURN WATER DISTRICT · 500 people · 2023 Highest in the city: 0.0031 mg/L — ARLINGTON WATER DEPARTMENT · 301 people · 2026	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 Arlington

Supplier	Population served
MILBURN WATER DISTRICT	500
ARLINGTON WATER DEPARTMENT	301

Frequently asked questions about Arlington tap water

Is Arlington tap water safe to drink?

EPA testing detected 11 contaminants in the water serving Arlington. 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 Arlington?

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

What contaminants are in Arlington's water?

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