East Hanover Water Hardness & Quality Report (2026)
Water Hardness
8.6 grains per gallon
Source
reservoir
pH Level
8
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
356.2 mg/L
Est. Daily Cost
$0.39
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 East Hanover, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In East Hanover | 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 East Hanover compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ East Hanover, New Jersey | 148 mg/L | 11.2 ppt | 🟠 Hard | reservoir |
| Hanover, New Jersey | 78.5 mg/L | 7.4 ppt | 🟡 Moderately Hard | reservoir |
| Florham Park, New Jersey | 37.5 mg/L | 5 ppt | 🟢 Soft | reservoir |
| Livingston, New Jersey | 181.5 mg/L | 13.1 ppt | 🔴 Very Hard | reservoir |
| Parsippany, New Jersey | 139 mg/L | 10.7 ppt | 🟠 Hard | reservoir |
National Benchmark
How East Hanover compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ East Hanover | 148 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes East Hanover's Water Unique?
Local geology and source profile
East Hanover, New Jersey, in Morris County — a Morris County township adjacent to Florham Park and Parsippany in north-central New Jersey — receives its water from the New Jersey American Water, drawing from Rockaway River Reservoir (Morris County) through the north-central New Jersey distribution.
The hard 148 mg/L hardness and TDS of 356.2 mg/L reflect the north-central New Jersey Morris County Rockaway supply's hard calcareous character — the Precambrian Highlands Gneiss insoluble and Triassic Newark Basin basalt slightly calcareous produce hard water in the Morris County distribution (compare Parsippany NJ: 143/325 in Morris County comparable; East Hanover slightly harder from the Morris County distribution end accumulation). The Rockaway-Triassic system at Morris County — Precambrian Highlands Gneiss (insoluble — primary dilutant), Triassic Newark Basin basalt (slightly calcareous — primary hardness contributor), and Quaternary Rockaway alluvium (calcareous — TDS contributor).
At 148 mg/L with TDS 356, East Hanover's water is 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 11.2 ppt is very high — a certified drinking water filter with PFAS removal is strongly recommended — the Morris County north-central New Jersey pharmaceutical and industrial corridor contribute to East Hanover's very elevated PFAS readings.
Geology & Source: East Hanover in Morris County is served by New Jersey American Water drawing from Rockaway River Reservoir — the Rockaway watershed drains Precambrian Highlands Gneiss (insoluble) and Triassic Newark Basin basalt (slightly calcareous) — NJ Morris County Rockaway Precambrian-Triassic supply produces hard water at 148 mg/L with TDS 356.2 mg/L.