Tap Water Quality Report
Tap water quality in IDAHO FALLS, Idaho
Tap water in IDAHO FALLS, Idaho receives a grade of D (63/100) from TapWaterSafety.org. It's served by IDAHO FALLS CITY OF. The most significant water quality concerns are: Arsenic significantly above health guideline; Bromodichloromethane significantly above health guideline; Chromium (hexavalent) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in IDAHO FALLS's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving IDAHO FALLS.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 2.0 ppb, 500x above the EWG health guideline of 0.004 ppb.
Bromodichloromethane significantly above health guideline
Moderate concernBromodichloromethane detected at 2.4 ppb, 40x above the EWG health guideline of 0.06 ppb.
Chromium (hexavalent) significantly above health guideline
Moderate concernChromium (hexavalent) detected at 0.723 ppb, 36x above the EWG health guideline of 0.02 ppb.
Recommended filters for IDAHO FALLS
Filters matched to the specific contaminants in IDAHO FALLS's water supply.
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 IDAHO FALLS'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 |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
2.0 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 500× over |
| Bromodichloromethane Disinfection byproduct |
2.4 ppb | 0.06 | — | — | — | — | — | 40× over |
| Chromium (hexavalent) Heavy metal |
0.723 ppb | 0.02 | — | — | — | — | — | 36× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
4.43 ppb | 0.15 | 80.0 | 100 | — | — | — | 30× over |
| Dibromochloromethane Disinfection byproduct |
2.9 ppb | 0.1 | — | — | — | — | — | 29× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
0.975 ppb | 0.06 | — | — | — | — | — | 16× over |
| Nitrate Inorganic |
1.86 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 13× over |
| Nitrate and nitrite Inorganic |
1.89 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 13× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
0.561 ppb | 0.1 | 60.0 | 60 | — | — | — | 5.6× over |
| Radium, combined (-226 and -228) Radiological |
0.22 pCi/L | 0.05 | 5.0 | — | — | — | — | 4.4× over |
| Chloroform Disinfection byproduct |
1.4 ppb | 0.4 | — | — | — | — | — | 3.5× over |
| Bromoform Disinfection byproduct |
1.2 ppb | 0.5 | — | — | — | — | — | 2.4× over |
| Uranium Radiological |
0.94 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 2.2× over |
| Barium Heavy metal |
100.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
2.89 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.89 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Molybdenum Other |
0.139 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Cobalt Other |
0.0444 ppb | 70.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.426 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.4 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
44.7 ppb | — | — | — | — | — | — | Below guideline |
| o-toluidine Other |
0.00113 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 IDAHO FALLS CITY OF.