Tap Water Quality Report
Tap water quality in KOKOMO, Indiana
Tap water in KOKOMO, Indiana receives a grade of D (60/100) from TapWaterSafety.org. It's served by INDIANA AMERICAN WATER - KOKOMO. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Arsenic significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in KOKOMO's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving KOKOMO.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 22.6 ppb, 377x above the EWG health guideline of 0.06 ppb.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 1.25 ppb, 313x above the EWG health guideline of 0.004 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 45.5 ppb, 303x above the EWG health guideline of 0.15 ppb.
Recommended filters for KOKOMO
Filters matched to the specific contaminants in KOKOMO's water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in KOKOMO's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
22.6 ppb | 0.06 | — | — | — | — | — | 377× over |
| Arsenic Heavy metal |
1.25 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 313× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
45.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 303× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
14.7 ppb | 0.1 | 60.0 | 60 | — | — | — | 147× over |
| Radium, combined (-226 and -228) Radiological |
1.54 pCi/L | 0.05 | 5.0 | — | — | — | — | 31× over |
| Nitrate Inorganic |
1.65 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 12× over |
| Nitrate and nitrite Inorganic |
1.65 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 12× over |
| Chromium (hexavalent) Heavy metal |
0.191 ppb | 0.02 | — | — | — | — | — | 9.5× over |
| Manganese Heavy metal |
128.2 ppb | 100.0 | — | 50 | 80 | — | — | Fails EU |
| Atrazine Pesticide/Herbicide |
0.113 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Fails EU |
| Chlorate Disinfection byproduct |
91.4 ppb | 210.0 | — | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.105 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Molybdenum Other |
5.19 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
50.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| 2,4-D Pesticide/Herbicide |
0.09 ppb | 20.0 | 70.0 | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.0117 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.313 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| cis-1,2-Dichloroethylene Volatile organic compound |
0.7 ppb | — | 70.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.53 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.134 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from INDIANA AMERICAN WATER - KOKOMO.