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Tap water quality report

Montgomery, IL

EPA monitoring detected 25 contaminants across the 1 water supplier serving Montgomery. 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
28,956
people served
25
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Montgomery'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
1272 µg/L 32%
of the EPA limit 4000 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2018
1/1 SYR4
Copper
669 µg/L 51%
of the EPA limit 1300 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2017
1/1 SYR4
Nitrate
542 µg/L 5.4%
of the EPA limit 10000 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Nitrate-Nitrite
493.05 µg/L 4.9%
of the EPA limit 10000 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2017
1/1 SYR4
Barium
54.525 µg/L 2.7%
of the EPA limit 2000 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2018
1/1 SYR4
Monochloroacetic Acid
53.2 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Lithium
32.7 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2025
1/1 UCMR-5
TTHM
26.758 µg/L 33%
of the EPA limit 80 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Lead
17.64 µg/L 118%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2017
1/1 SYR4
Dibromochloromethane
9.3355 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Bromodichloromethane
7.947 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Bromoform
6.975 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Chloroform
5.955 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
5 µg/L 8.3%
of the EPA limit 60 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
4.94 pCi/L 99%
of the EPA limit 5 pCi/L
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Arsenic
2.68 µg/L 27%
of the EPA limit 10 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2018
1/1 SYR4
Trichloroacetic Acid
2.5985 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Xylenes, Total
2.292 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.1 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Dichloroacetic Acid
2.06 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Monobromoacetic Acid
2.0455 µg/L
No EPA limit set
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Vinyl Chloride
1.323 µg/L 66%
of the EPA limit 2 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
cis-1,2-Dichloroethylene
0.9150 µg/L 1.3%
of the EPA limit 70 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2019
1/1 SYR4
Mercury
0.2400 µg/L 12%
of the EPA limit 2 µg/L
Main supplier: MONTGOMERY · 28,956 people · 2018
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: MONTGOMERY · 28,956 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 Montgomery

SupplierPopulation served
MONTGOMERY 28,956

Frequently asked questions about Montgomery tap water

Is Montgomery tap water safe to drink?

EPA testing detected 25 contaminants in the water serving Montgomery. 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 Montgomery?

1 public water supplier report drinking-water monitoring for Montgomery, Illinois to the EPA. Each is listed above with its population served.

What contaminants are in Montgomery's water?

The contaminants EPA monitoring detected in Montgomery 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.