Nitrate in Idaho Falls, ID Drinking Water
Nitrate data for Idaho Falls, Idaho · 122,947 residents · 7 ZIP codes
Over the past reporting period, water systems in Idaho Falls, Idaho have recorded Nitrate at detectable concentrations in EPA compliance samples.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-04-05
Nitrate in Idaho Falls Tap Water
Nitrate has been detected in Idaho Falls, Idaho drinking water at a maximum level of 10 ppb — below the EPA MCL of 10 mg/L (as nitrogen).
This analysis covers 122,947 residents across 7 ZIP codes in Idaho Falls.
Idaho Falls's overall water quality grade is B (72/100).
Is Nitrate in Idaho Falls Water Safe?
Nitrate was detected in Idaho Falls water but currently falls within EPA limits. However, some health organizations argue the EPA MCL may not be protective enough.
If you are concerned, a reverse osmosis or ion exchange filter can reduce nitrate levels further.
Nitrate Levels by ZIP Code
| ZIP Code | Nitrate Level | EPA Limit | Status |
|---|---|---|---|
| 83401 | 10 ppm | 10 mg/L (as nitrogen) | OK |
| 83402 | 10 ppm | 10 mg/L (as nitrogen) | OK |
| 83403 | 10 ppm | 10 mg/L (as nitrogen) | OK |
| 83404 | 10 ppm | 10 mg/L (as nitrogen) | OK |
| 83405 | 10 ppm | 10 mg/L (as nitrogen) | OK |
| 83406 | 10 ppm | 10 mg/L (as nitrogen) | OK |
| 83415 | 10 ppm | 10 mg/L (as nitrogen) | OK |
Average nitrate level across Idaho Falls: 10 ppb
Health Effects of Nitrate
- Methemoglobinemia ("blue baby syndrome") in infants under 6 months
- Increased risk of colorectal and bladder cancer (long-term)
- Thyroid disease from chronic exposure
- Possible reproductive effects
Health risk severity: High. Governed by the National Primary Drinking Water Regulations.
How Nitrate Gets Into Drinking Water
- Agricultural fertilizer runoff
- Animal feedlot operations and manure
- Septic system leachate
- Urban stormwater and wastewater discharge
What to Do About Nitrate in Idaho Falls Water
- Reverse osmosis is the most effective method for nitrate removal
- Ion exchange systems designed for nitrate can also work
- Standard carbon filters do NOT remove nitrate
- Boiling water increases nitrate concentration — never boil for nitrate
Look for filters certified under NSF 53 / NSF 58 for nitrate removal.