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Tap water quality report

Dubois, IN

EPA monitoring detected 12 contaminants across the 2 water suppliers serving Dubois. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
22,581
people served
12
contaminants found
Indiana rankings Lead in Indiana PFAS in Indiana

What was found in Dubois's water

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

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
900 µg/L 23%
of the EPA limit 4000 µg/L
 1/2 SYR4
Copper
770 µg/L 59%
of the EPA limit 1300 µg/L
 2/2 SYR4
Nitrate
200 µg/L 2%
of the EPA limit 10000 µg/L
 1/2 SYR4
TTHM
136 µg/L 170%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
113 µg/L 188%
of the EPA limit, in the worst sample — 60 µg/L
 2/2 SYR4
Chloroform
51 µg/L
No EPA limit set
 1/2 SYR4
Barium
36 µg/L 1.8%
of the EPA limit 2000 µg/L
 1/2 SYR4
Lead
25 µg/L 167%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Bromodichloromethane
5.5 µg/L
No EPA limit set
 1/2 SYR4
Gross Alpha, Excl. Radon And U
0.9900 pCi/L 6.6%
of the EPA limit 15 pCi/L
 1/2 SYR4
Atrazine
0.2000 µg/L 6.7%
of the EPA limit 3 µg/L
 1/2 SYR4
Lead
0.0067 mg/L 45%
of the EPA limit 0.0150 mg/L
 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 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 Dubois

SupplierPopulation served
PATOKA LAKE REGIONAL WATER 13,503
DUBOIS WATER UTILITIES 9,078

Frequently asked questions about Dubois tap water

Is Dubois tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Dubois. 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 Dubois?

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

What contaminants are in Dubois's water?

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