Hunterdon County water hardness
Hunterdon County sits over limestone and dolomite valleys. Both public systems and the county's many private wells commonly test in the hard to very hard range.
Across the 2 Hunterdon County municipalities with published figures, hardness averages 11.7 grains per gallon — very hard water on the USGS scale. Because most towns here buy treated water rather than produce it, neighbouring municipalities on the same system report the same number; the systems represented below are Crossroads at Oldwick System, Frenchtown System.
2 of 2 records
| mg/L | Class | Source | |||
|---|---|---|---|---|---|
| Crossroads at Oldwick | 13 | 222 | Very Hard | Crossroads at Oldwick System | NJ American Water CCR |
| Frenchtown | 10.4 | 178 | Hard | Frenchtown System | NJ American Water CCR |
Every Hunterdon County town page
Each municipality has its own page with the reported figure, the system that supplies it, what the level means in practice locally, and the report the number was read from.
The extremes in Hunterdon County are Crossroads at Oldwick water hardness at 13 gpg and Frenchtown at 10.4 gpg.