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Tap water quality report

Rockton, IL

EPA monitoring detected 17 contaminants across the 2 water suppliers serving Rockton. 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
7,765
people served
17
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Rockton'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-Nitrite
3681 µg/L 37%
of the EPA limit 10000 µg/L
Main supplier: ROCKTON · 7,685 people · 2018
2/2 SYR4
Nitrate
3600 µg/L 36%
of the EPA limit 10000 µg/L
Main supplier: ROCKTON · 7,685 people · 2019
Highest in the city: 3620 µg/L — PHIL-AIRE ESTATES MHP · 80 people · 2019
2/2 SYR4
Fluoride
1365 µg/L 34%
of the EPA limit 4000 µg/L
Main supplier: ROCKTON · 7,685 people · 2018
2/2 SYR4
Barium
123.5 µg/L 6.2%
of the EPA limit 2000 µg/L
Main supplier: ROCKTON · 7,685 people · 2018
Highest in the city: 1247.75 µg/L — PHIL-AIRE ESTATES MHP · 80 people · 2017
2/2 SYR4
Copper
868.4 µg/L 67%
of the EPA limit 1300 µg/L
Main supplier: ROCKTON · 7,685 people · 2019
2/2 SYR4
Lead
39.78 µg/L 265%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: ROCKTON · 7,685 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
7.405 pCi/L 148%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
Main supplier: ROCKTON · 7,685 people · 2019
2/2 SYR4
TTHM
6.561 µg/L 8.2%
of the EPA limit 80 µg/L
Main supplier: ROCKTON · 7,685 people · 2019
2/2 SYR4
Arsenic
4.58 µg/L 46%
of the EPA limit 10 µg/L
Main supplier: ROCKTON · 7,685 people · 2018
1/2 SYR4
Chloroform
2.166 µg/L
No EPA limit set
Main supplier: ROCKTON · 7,685 people · 2019
2/2 SYR4
Bromoform
1.90934 µg/L
No EPA limit set
Main supplier: ROCKTON · 7,685 people · 2019
1/2 SYR4
Bromodichloromethane
1.828 µg/L
No EPA limit set
Main supplier: ROCKTON · 7,685 people · 2019
2/2 SYR4
Dibromochloromethane
1.21175 µg/L
No EPA limit set
Main supplier: ROCKTON · 7,685 people · 2019
2/2 SYR4
Dibromoacetic Acid
1 µg/L
No EPA limit set
Highest in the city: PHIL-AIRE ESTATES MHP · 80 people · 2017
1/2 SYR4
Total Haloacetic Acids (HAA5)
1 µg/L 1.7%
of the EPA limit 60 µg/L
Highest in the city: PHIL-AIRE ESTATES MHP · 80 people · 2017
1/2 SYR4
PFHXS
0.0120 µg/L
No EPA limit set
Main supplier: ROCKTON · 7,685 people · 2025
1/2 UCMR-5
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
Main supplier: ROCKTON · 7,685 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 Rockton

SupplierPopulation served
ROCKTON 7,685
PHIL-AIRE ESTATES MHP 80

Frequently asked questions about Rockton tap water

Is Rockton tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Rockton. 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 Rockton?

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

What contaminants are in Rockton's water?

The contaminants EPA monitoring detected in Rockton include Nitrate-Nitrite, Nitrate, Fluoride, Barium, Copper. 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.