Caldwell water quality
Idaho DEQ results for the 4 public systems serving Caldwell, about 75,443 people. Hardness, flags, and certified filters are on this page and each system report.
Does Caldwell tap water meet federal standards?
Systems met federal limits. At least one contaminant was elevated, or a recent violation was recorded.
Is Caldwell water hard?Hardness is not reported in the latest CCR. Caldwell water hardness uses a labelled regional default until a reviewed value is published.
Is Caldwell water fluoridated?No system serving Caldwell reports fluoride at levels used for community fluoridation. On City of Caldwell, the 36-month high was 0.46ppm. The federal limit (MCL) is 4 mg/L. Reverse osmosis certified to NSF/ANSI 58 reduces fluoride if you prefer less. Water is chlorinated for disinfection. fluoride in Caldwell.
Water systems serving Caldwell
| System | People | Status | Hardness | Flagged |
|---|---|---|---|---|
| City of Caldwell | 74,000 | Worth watching | not reported | Arsenic |
| Caldwell Housing Authority | 1,100 | Worth watching | not reported | Arsenic Uranium Nitrate (as N) Lead |
| Lakeys Cafe and Trailer Park | 300 | Meets | not reported | |
| H and L Park | 43 | Meets | not reported |
Contaminants flagged in Caldwell
Arsenic in Caldwell drinking water
- City of Caldwell: 7.5ppb Elevated
- Caldwell Housing Authority: 6.3ppb Elevated
Uranium in Caldwell drinking water
- Caldwell Housing Authority: 22.0ppb Elevated
Nitrate (as N) in Caldwell drinking water
- Caldwell Housing Authority: 5.50ppm Elevated
Lead in Caldwell drinking water
- Caldwell Housing Authority: 16.0ppb Elevated
Wells near Caldwell
ZIP pages are estimates from nearby samples, not a test of your well: 83605 83607
Numbers are the system's samples at its taps and wells, not yours. Lead and copper are 90th percentiles from sampled homes. Well pages are nearby-sample estimates. Health text restates EPA and DEQ. Methodology.