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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 level at the main supplier 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 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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
7855 µg/L 79%
of the EPA limit 10000 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
1/2 SYR4
Nitrate-Nitrite
6750 µg/L 68%
of the EPA limit 10000 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2018
1/2 SYR4
Fluoride
1236 µg/L 31%
of the EPA limit 4000 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2018
1/2 SYR4
Copper
770 µg/L 59%
of the EPA limit 1300 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
2/2 SYR4
Barium
120 µg/L 6%
of the EPA limit 2000 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2018
1/2 SYR4
Lead
1.26 µg/L 8.4%
of the EPA limit 15 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
Highest in the city: 28.45 µg/L — DALLAS CITY · 788 people · 2019
2/2 SYR4
TTHM
17.219 µg/L 22%
of the EPA limit 80 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
Highest in the city: 25.22 µg/L — DALLAS CITY · 788 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
16.1255 µg/L 27%
of the EPA limit 60 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
2/2 SYR4
Chloroform
8.25805 µg/L
No EPA limit set
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
Highest in the city: 10.98 µg/L — DALLAS CITY · 788 people · 2019
2/2 SYR4
Bromodichloromethane
5.71525 µg/L
No EPA limit set
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
Highest in the city: 8.465 µg/L — DALLAS CITY · 788 people · 2019
2/2 SYR4
Dichloroacetic Acid
8.168 µg/L
No EPA limit set
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
2/2 SYR4
Monobromoacetic Acid
5.326 µg/L
No EPA limit set
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
2/2 SYR4
Dibromochloromethane
4.199 µg/L
No EPA limit set
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
Highest in the city: 5.197 µg/L — DALLAS CITY · 788 people · 2019
2/2 SYR4
Trichloroacetic Acid
4.5775 µg/L
No EPA limit set
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
2/2 SYR4
Selenium
4.28 µg/L 8.6%
of the EPA limit 50 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2018
1/2 SYR4
Dibromoacetic Acid
1.9635 µg/L
No EPA limit set
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
Highest in the city: 2.86 µg/L — DALLAS CITY · 788 people · 2019
2/2 SYR4
Bromoform
1.89525 µg/L
No EPA limit set
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2019
2/2 SYR4
Arsenic
1.59 µg/L 16%
of the EPA limit 10 µg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2018
1/2 SYR4
Combined Radium (-226 And -228)
0.7500 pCi/L 15%
of the EPA limit 5 pCi/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2018
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: DALLAS RURAL WATER DISTRICT · 6,370 people · 2025
Highest in the city: 0.0031 mg/L — DALLAS CITY · 788 people · 2025
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 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 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.