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Tap water quality report

Corning, IA

EPA monitoring detected 22 contaminants across the 1 water supplier serving Corning. 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
1,735
people served
22
contaminants found
Iowa rankings Lead in Iowa PFAS in Iowa

What was found in Corning'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
Chlorite
784.5 µg/L 78%
of the EPA limit 1000 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Fluoride
720 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Copper
241.1 µg/L 19%
of the EPA limit 1300 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2017
1/1 SYR4
Nitrite
220 µg/L 22%
of the EPA limit 1000 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
TTHM
89.075 µg/L 111%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Chloroform
71.4 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Barium
70.7 µg/L 3.5%
of the EPA limit 2000 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2013
1/1 SYR4
Total Haloacetic Acids (HAA5)
56.22 µg/L 94%
of the EPA limit 60 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Dichloroacetic Acid
28.515 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Monobromoacetic Acid
22.6295 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Monochloroacetic Acid
21.07 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Trichloroacetic Acid
16.385 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Bromodichloromethane
15.345 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Lead
6.2 µg/L 41%
of the EPA limit 15 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2017
1/1 SYR4
Dibromochloromethane
5.6705 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
2.5 pCi/L 50%
of the EPA limit 5 pCi/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2018
1/1 SYR4
1,2,4-Trichlorobenzene
2.48 µg/L 3.5%
of the EPA limit 70 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Dibromoacetic Acid
1.947 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Bromoform
0.7570 µg/L
No EPA limit set
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Atrazine
0.3510 µg/L 12%
of the EPA limit 3 µg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2019
1/1 SYR4
Lead
0.0025 mg/L 17%
of the EPA limit 0.0150 mg/L
Main supplier: CORNING MUNI WATER DEPARTMENT · 1,735 people · 2023
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 Corning

SupplierPopulation served
CORNING MUNI WATER DEPARTMENT 1,735

Frequently asked questions about Corning tap water

Is Corning tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Corning. 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 Corning?

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

What contaminants are in Corning's water?

The contaminants EPA monitoring detected in Corning include Chlorite, Fluoride, Nitrate, Copper, Nitrite. 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.