Warren County water hardness
Warren County sits squarely on the Kittatinny limestone belt. Public systems here report some of the highest hardness figures published anywhere in the state.
Across the 6 Warren County municipalities with published figures, hardness averages 17.7 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 Belvidere System, Washington Service System.
6 of 6 records
| mg/L | Class | Source | |||
|---|---|---|---|---|---|
| Belvidere | 15.4 | 263 | Very Hard | Belvidere System | NJ American Water CCR |
| Oxford | 18.9 | 323 | Very Hard | Washington Service System | NJ American Water CCR |
| Stewartsville | 18.9 | 323 | Very Hard | Washington Service System | NJ American Water CCR |
| Washington | 18.9 | 323 | Very Hard | Washington Service System | NJ American Water CCR |
| Washington Township (Warren County) | 18.9 | 323 | Very Hard | Washington Service System | NJ American Water CCR |
| White Township | 15.4 | 263 | Very Hard | Belvidere System | NJ American Water CCR |
Every Warren 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.
- Belvidere water hardness — 15.4 gpg, very hard15.4 gpg
- Oxford water hardness — 18.9 gpg, very hard18.9 gpg
- Stewartsville water hardness — 18.9 gpg, very hard18.9 gpg
- Washington water hardness — 18.9 gpg, very hard18.9 gpg
- Washington Township (Warren County) water hardness — 18.9 gpg, very hard18.9 gpg
- White Township water hardness — 15.4 gpg, very hard15.4 gpg
The extremes in Warren County are Oxford water hardness at 18.9 gpg and White Township at 15.4 gpg.