Warren Township Water Hardness & Quality Report (2026)
Water Hardness
8.7 grains per gallon
Source
reservoir
pH Level
8
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
358 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Warren Township, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Warren Township | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 8.1 yrs | 12 yrs | -33% |
| Water Heater | 9.7 yrs | 15 yrs | -35% |
Regional Water Comparison
How Warren Township compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Warren Township, New Jersey | 148.5 mg/L | 11.3 ppt | 🟠 Hard | reservoir |
| Middlesex, New Jersey | 65.5 mg/L | 6.6 ppt | 🟡 Moderately Hard | reservoir |
| North Plainfield, New Jersey | 110.5 mg/L | 9.2 ppt | 🟡 Moderately Hard | reservoir |
| Basking Ridge, New Jersey | 181 mg/L | 13.1 ppt | 🔴 Very Hard | reservoir |
| Berkeley Heights, New Jersey | 43.5 mg/L | 5.4 ppt | 🟢 Soft | reservoir |
National Benchmark
How Warren Township compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Warren Township | 148.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Warren Township's Water Unique?
Local geology and source profile
Warren Township, New Jersey, in Somerset County — a Somerset County township adjacent to Watchung and Mountainside in the New Jersey Highlands of north-central New Jersey — receives its water from NJ American Water or local township utilities, drawing from Round Valley Reservoir (Spruce Run Reservoir system, Somerset County) through the north-central New Jersey distribution.
The moderately hard 148.5 mg/L hardness and TDS of 358 mg/L reflect the north-central New Jersey Highland reservoir supply's moderate calcareous character — consistent with other Somerset-Hunterdon County NJ communities receiving Highlands reservoir water (Somerville: ~150 mg/L; Bridgewater: ~145 mg/L). Round Valley and Spruce Run Reservoirs (Somerset County) drain the New Jersey Highlands — Precambrian Franklin Marble (calcareous — primary hardness contributor), Cambrian Kittatinny Limestone (calcareous), and Precambrian Losee Tonalite Gneiss (insoluble — dilutant).
At 148.5 mg/L, Warren Township's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 11.3 ppt is very high — Picatinny Arsenal (Morris County — AFFF, the primary north New Jersey PFAS source with direct Somerset-Morris County groundwater influence), Fort Dix/McGuire (Burlington County — AFFF), and the New Jersey Highlands military-industrial PFAS complex contribute to Warren Township's very elevated readings.
Geology & Source: Warren Township in Somerset County draws from NJ American Water or local utilities on Round Valley Reservoir (Somerset County, north-central New Jersey) — Round Valley drains the New Jersey Highlands (Precambrian Franklin Marble, Cambrian Kittatinny Limestone — calcareous) — New Jersey Somerset County New Jersey Highlands calcareous reservoir produces moderately hard water at 148.5 mg/L with TDS 358 mg/L in this Somerset County New Jersey township.