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Tap water quality report

Kokomo, IN

EPA monitoring detected 18 contaminants across the 7 water suppliers serving Kokomo. 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.

7
water suppliers
60,468
people served
18
contaminants found
Indiana rankings Lead in Indiana PFAS in Indiana

What was found in Kokomo'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
4360 µg/L 44%
of the EPA limit 10000 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
2/7 SYR4
Nitrate-Nitrite
3930 µg/L 39%
of the EPA limit 10000 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
1/7 SYR4
Barium
170 µg/L 8.5%
of the EPA limit 2000 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
Highest in the city: 2696 µg/L — OAK BROOK ESTATES · 455 people · 2018
7/7 SYR4
Copper
1543.5 µg/L 119%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2018
7/7 SYR4
Fluoride
955 µg/L 24%
of the EPA limit 4000 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
Highest in the city: 1500 µg/L — WESTERN ESTATES MOBILE HOME PARK · 248 people · 2018
7/7 SYR4
TTHM
89.535 µg/L 112%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
4/7 SYR4
Total Haloacetic Acids (HAA5)
39.78 µg/L 66%
of the EPA limit 60 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
4/7 SYR4
Lead
6.2 µg/L 41%
of the EPA limit 15 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2018
Highest in the city: 15.56 µg/L — VILLAGE GREEN MOBILE HOME PARK · 102 people · 2018
6/7 SYR4
Lithium
14.5 µg/L
No EPA limit set
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2025
1/7 UCMR-5
Chromium
6 µg/L 6%
of the EPA limit 100 µg/L
Highest in the city: WESTERN ESTATES MOBILE HOME PARK · 248 people · 2018
3/7 SYR4
Gross Alpha, Excl. Radon And U
5.637 pCi/L 38%
of the EPA limit 15 pCi/L
Highest in the city: DIXON WOODS APARTMENTS · 25 people · 2016
4/7 SYR4
Arsenic
3 µg/L 30%
of the EPA limit 10 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
4/7 SYR4
Combined Radium (-226 And -228)
2.5635 pCi/L 51%
of the EPA limit 5 pCi/L
Highest in the city: WESTERN ESTATES MOBILE HOME PARK · 248 people · 2017
1/7 SYR4
cis-1,2-Dichloroethylene
1.575 µg/L 2.3%
of the EPA limit 70 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
1/7 SYR4
Combined Uranium
1.4 µg/L 4.7%
of the EPA limit 30 µg/L
Highest in the city: OAK BROOK ESTATES · 455 people · 2014
1/7 SYR4
Atrazine
0.3400 µg/L 11%
of the EPA limit 3 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
1/7 SYR4
Simazine
0.0985 µg/L 2.5%
of the EPA limit 4 µg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2019
1/7 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: INDIANA AMERICAN WATER - KOKOMO · 59,313 people · 2024
Highest in the city: 0.0116 mg/L — VILLAGE GREEN MOBILE HOME PARK · 102 people · 2025
7/7 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 Kokomo

SupplierPopulation served
INDIANA AMERICAN WATER - KOKOMO 59,313
OAK BROOK ESTATES 455
WESTERN ESTATES MOBILE HOME PARK 248
TIMBERNEST TOWNHOUSES 175
THE OAKS OF KOKOMO 150
VILLAGE GREEN MOBILE HOME PARK 102
DIXON WOODS APARTMENTS 25

Frequently asked questions about Kokomo tap water

Is Kokomo tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Kokomo. 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 Kokomo?

7 public water suppliers report drinking-water monitoring for Kokomo, Indiana to the EPA. Each is listed above with its population served.

What contaminants are in Kokomo's water?

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