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Tap water quality report

Dallas City, IL

EPA monitoring detected 20 contaminants across the 2 water suppliers serving Dallas City. 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
7,158
people served
20
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Dallas City'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
Nitrate
8700 µg/L 87%
of the EPA limit 10000 µg/L
 1/2 SYR4
Nitrate-Nitrite
6800 µg/L 68%
of the EPA limit 10000 µg/L
 1/2 SYR4
Fluoride
1240 µg/L 31%
of the EPA limit 4000 µg/L
 1/2 SYR4
Copper
890 µg/L 68%
of the EPA limit 1300 µg/L
 2/2 SYR4
Barium
120 µg/L 6%
of the EPA limit 2000 µg/L
 1/2 SYR4
Lead
40.7 µg/L 271%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
TTHM
29.7 µg/L 37%
of the EPA limit 80 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
17.27 µg/L 29%
of the EPA limit 60 µg/L
 2/2 SYR4
Chloroform
13.5 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
9.9 µg/L
No EPA limit set
 2/2 SYR4
Dichloroacetic Acid
9.5 µg/L
No EPA limit set
 2/2 SYR4
Monobromoacetic Acid
5.46 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
5.4 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
5.2 µg/L
No EPA limit set
 2/2 SYR4
Selenium
4.3 µg/L 8.6%
of the EPA limit 50 µg/L
 1/2 SYR4
Dibromoacetic Acid
3.1 µg/L
No EPA limit set
 2/2 SYR4
Bromoform
2.13 µg/L
No EPA limit set
 2/2 SYR4
Arsenic
1.6 µg/L 16%
of the EPA limit 10 µg/L
 1/2 SYR4
Combined Radium (-226 And -228)
0.7500 pCi/L 15%
of the EPA limit 5 pCi/L
 1/2 SYR4
Lead
0.0031 mg/L 20%
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 Dallas City

SupplierPopulation served
DALLAS RURAL WATER DISTRICT 6,370
DALLAS CITY 788

Frequently asked questions about Dallas City tap water

Is Dallas City tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Dallas City. 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 Dallas City?

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

What contaminants are in Dallas City's water?

The contaminants EPA monitoring detected in Dallas City include Nitrate, Nitrate-Nitrite, Fluoride, 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.