Manville Water Hardness & Quality Report (2026)
Water Hardness
2.7 grains per gallon
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
74 mg/L
Est. Daily Cost
$0.12
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 Manville, your appliances are currently losing 6% efficiency due to mineral buildup.
| Appliance | In Manville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.1 yrs | 8.5 yrs | -5% |
| Washing Machine | 11.9 yrs | 12 yrs | -1% |
| Water Heater | 13.7 yrs | 15 yrs | -9% |
Regional Water Comparison
How Manville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Manville, New Jersey | 46.5 mg/L | 5.5 ppt | 🟢 Soft | reservoir |
| Somerville, New Jersey | 125.5 mg/L | 10 ppt | 🟠 Hard | reservoir |
| Bound Brook, New Jersey | 57.5 mg/L | 6.2 ppt | 🟢 Soft | reservoir |
| Martinsville, New Jersey | 52 mg/L | 5.9 ppt | 🟢 Soft | reservoir |
| Bradley Gardens, New Jersey | 59 mg/L | 6.3 ppt | 🟢 Soft | reservoir |
National Benchmark
How Manville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Manville | 46.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Manville's Water Unique?
Local geology and source profile
Manville, New Jersey, in Somerset County — a Somerset County borough adjacent to Bound Brook and South Bound Brook on the Raritan River in central New Jersey — receives its water from New Jersey American Water, drawing from the Raritan River through the central New Jersey distribution.
The very soft 46.5 mg/L hardness and very low TDS of 74 mg/L reflect the Somerset County supply's very soft Triassic Lowlands character — the Triassic Brunswick Formation provides slightly calcareous red shale mineral content, while the Precambrian Highlands Gneiss provides abundant insoluble dilution from the Raritan headwaters; Manville at this upstream Raritan zone receives the softest water in Somerset County (compare Bound Brook NJ: 57.5/97 in Somerset County comparable; South Bound Brook NJ: 44/70 in Somerset County comparable; Manville consistent very soft from the same Somerset County Raritan River Triassic supply). The Raritan watershed at Manville — Triassic Brunswick Formation (slightly calcareous — primary hardness contributor), Precambrian Highlands Gneiss (insoluble — primary dilutant), and Quaternary Raritan River alluvium (slightly calcareous — minimal TDS).
At 46.5 mg/L with TDS 74, Manville's water is very soft — virtually no scale buildup. Very soft water can be mildly corrosive — monitor for copper staining. The PFAS level of 5.5 ppt warrants a certified drinking water filter. Review New Jersey American Water's annual water quality report.
Geology & Source: Manville in Somerset County draws from the New Jersey American Water on the Raritan River supply (Somerset County, central New Jersey) — the Raritan watershed at Somerset County draws from Triassic Brunswick Formation (slightly calcareous) and Precambrian Highlands Gneiss (insoluble) — New Jersey Somerset County Raritan River Triassic supply produces very soft water at 46.5 mg/L with TDS 74 mg/L.