Hardness (total)
This page displays information extracted automatically from the Parameters and Determinands dataset being developed by Taumata Arowai. The relevant parameter and determinands with MAVs are drawn directly from the Drinking Water Standards Regulations (2022) (opens in a new tab) or the DWQAR (opens in a new tab) itself.
Attributes
| ID | |
| Name | Hardness (total) |
| Type | Parameter |
| Aesthetic Value | <= 200 |
| Source | Aesthetic Values for Drinking Water Notice 2022 (opens in a new tab) |
| Accepted Units | mg/L as CaCO₃ |
| Notes | Scale deposition, scum formation (pH and alkalinity dependent) Low hardness (<100) may be more corrosive |