Is Iola, KS Tap Water Safe? Quality & Contaminants

What was found in Iola's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	1300 µg/L 13% of the EPA limit 10000 µg/L	2/5	SYR4
Fluoride	1000 µg/L 25% of the EPA limit 4000 µg/L	2/5	SYR4
Chlorite	980 µg/L 98% of the EPA limit 1000 µg/L	1/5	SYR4
Copper	760 µg/L 58% of the EPA limit 1300 µg/L	5/5	SYR4
Barium	100 µg/L 5% of the EPA limit 2000 µg/L	2/5	SYR4
Total Haloacetic Acids (HAA5)	100 µg/L 167% of the EPA limit, in the worst sample — 60 µg/L	5/5	SYR4
TTHM	84 µg/L 105% of the EPA limit, in the worst sample — 80 µg/L	5/5	SYR4
Chloroform	62 µg/L No EPA limit set	5/5	SYR4
Dichloroacetic Acid	57 µg/L No EPA limit set	5/5	SYR4
Trichloroacetic Acid	37 µg/L No EPA limit set	5/5	SYR4
Lead	30 µg/L 200% of the EPA limit, in the worst sample — 15 µg/L	3/5	SYR4
Bromate	26 µg/L 260% of the EPA limit, in the worst sample — 10 µg/L	1/5	SYR4
Bromodichloromethane	26 µg/L No EPA limit set	5/5	SYR4
Monochloroacetic Acid	24 µg/L No EPA limit set	5/5	SYR4
Dibromochloromethane	16 µg/L No EPA limit set	5/5	SYR4
Dibromoacetic Acid	9.4 µg/L No EPA limit set	5/5	SYR4
Bromoform	5.1 µg/L No EPA limit set	5/5	SYR4
Atrazine	4.9 µg/L 163% of the EPA limit, in the worst sample — 3 µg/L	2/5	SYR4
Monobromoacetic Acid	3.5 µg/L No EPA limit set	5/5	SYR4
Chromium	2.1 µg/L 2.1% of the EPA limit 100 µg/L	2/5	SYR4
Selenium	1.7 µg/L 3.4% of the EPA limit 50 µg/L	2/5	SYR4
Arsenic	1.3 µg/L 13% of the EPA limit 10 µg/L	2/5	SYR4
Carbon Tetrachloride	0.8700 µg/L 17% of the EPA limit 5 µg/L	2/5	SYR4
Combined Radium (-226 And -228)	0.5000 pCi/L 10% of the EPA limit 5 pCi/L	2/5	SYR4
Lasso	0.2900 µg/L 14% of the EPA limit 2 µg/L	1/5	SYR4
Lead	0.0079 mg/L 53% of the EPA limit 0.0150 mg/L	4/5	LCR
6:2 Fts	0.0060 µg/L No EPA limit set	1/5	UCMR-5
Pfhxa	0.0037 µg/L No EPA limit set	1/5	UCMR-5

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 single worst sample on record — 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 Iola

Supplier	Population served
IOLA, CITY OF	5,343
ALLEN CO RWD 15	135
ALLEN CO RWD 4	52
ALLEN CO RWD 6	45
PUBLIC WHOLESALE WSD 5	1

Frequently asked questions about Iola tap water

Is Iola tap water safe to drink?

EPA testing detected 28 contaminants in the water serving Iola. 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 Iola?

5 public water suppliers report drinking-water monitoring for Iola, Kansas to the EPA. Each is listed above with its population served.

What contaminants are in Iola's water?

The contaminants EPA monitoring detected in Iola include Nitrate, Fluoride, Chlorite, Copper, Barium. The full list, with the highest level found 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.