Delaware water hardness

Understanding Delaware

Why local comparisons matter here

Delaware lies almost entirely on the Atlantic Coastal Plain, with communities relying on groundwater aquifers, surface supplies, or purchased water in a small but varied service landscape.

In this index, moderately hard is the largest category, covering 23 of 48 profiles with hardness data. The state median is 63 PPM, but the full indexed range is 31.1–129 PPM.