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Tap water quality report

Arlington, IL

EPA monitoring detected 21 contaminants across the 1 water supplier serving Arlington. 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.

1
water supplier
250
people served
21
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

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.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1160.2 µg/L 29%
of the EPA limit 4000 µg/L
Main supplier: ARLINGTON · 250 people · 2018
1/1 SYR4
Copper
397.85 µg/L 31%
of the EPA limit 1300 µg/L
Main supplier: ARLINGTON · 250 people · 2019
1/1 SYR4
Nitrate
164 µg/L 1.6%
of the EPA limit 10000 µg/L
Main supplier: ARLINGTON · 250 people · 2019
1/1 SYR4
Nitrate-Nitrite
164 µg/L 1.6%
of the EPA limit 10000 µg/L
Main supplier: ARLINGTON · 250 people · 2019
1/1 SYR4
Barium
67.3 µg/L 3.4%
of the EPA limit 2000 µg/L
Main supplier: ARLINGTON · 250 people · 2018
1/1 SYR4
TTHM
29.5395 µg/L 37%
of the EPA limit 80 µg/L
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Nitrite
17.65 µg/L 1.8%
of the EPA limit 1000 µg/L
Main supplier: ARLINGTON · 250 people · 2019
1/1 SYR4
Chloroform
12.6925 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Lead
12.635 µg/L 84%
of the EPA limit 15 µg/L
Main supplier: ARLINGTON · 250 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
11.6385 µg/L 19%
of the EPA limit 60 µg/L
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Bromodichloromethane
9.046 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Monochloroacetic Acid
8.17 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Dibromochloromethane
6.679 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Dichloroacetic Acid
6 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Trichloroacetic Acid
3.007 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Dibromoacetic Acid
2.6 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
trans-1,2-Dichloroethylene
1.8 µg/L 1.8%
of the EPA limit 100 µg/L
Main supplier: ARLINGTON · 250 people · 2019
1/1 SYR4
Bromoform
1.518 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Monobromoacetic Acid
1.06 µg/L
No EPA limit set
Main supplier: ARLINGTON · 250 people · 2017
1/1 SYR4
Combined Radium (-226 And -228)
0.7766 pCi/L 16%
of the EPA limit 5 pCi/L
Main supplier: ARLINGTON · 250 people · 2018
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: ARLINGTON · 250 people · 2025
1/1 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

SupplierPopulation served
ARLINGTON 250

Frequently asked questions about Arlington tap water

Is Arlington tap water safe to drink?

EPA testing detected 21 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?

1 public water supplier report drinking-water monitoring for Arlington, Illinois 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 Fluoride, Copper, Nitrate, Nitrate-Nitrite, 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.