Hardness (as CaCO3) in Boise water
4 systems serving Boise City detected Hardness (as CaCO3) in the last 36 months.
| System | 36 mo max | Latest | Status | Last sample |
|---|---|---|---|---|
| Veolia Water Idaho | 12.8gpg | 6.1gpg | Meets | 2025-12-31 |
| Garden City Water and Sewer System | 11.0gpg | 9.9gpg | Meets | 2025-12-31 |
| Meridian Water Department | 7.6gpg | 7.6gpg | Meets | 2023-09-26 |
| Hillsdale Estates Homeowners Association | 3.9gpg | 3.9gpg | Meets | 2025-11-06 |
Hardness is not regulated and is not a health concern. It is the amount of dissolved calcium and magnesium, which causes scale, soap scum, and appliance wear.Agency language as recorded in the contaminant reference. This site does not paraphrase health guidance.
Hardness (as CaCO3) in Treasure Valley drinking water. Boise City water quality.
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.