South Orange Water Hardness & Quality Report (2026)
Water Hardness
7.5 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
290.9 mg/L
Est. Daily Cost
$0.34
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 South Orange, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In South Orange | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.3 yrs | 8.5 yrs | -38% |
| Washing Machine | 8.8 yrs | 12 yrs | -27% |
| Water Heater | 10.4 yrs | 15 yrs | -31% |
Regional Water Comparison
How South Orange compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ South Orange, New Jersey | 129 mg/L | 10.2 ppt | 🟠 Hard | reservoir |
| Maplewood, New Jersey | 47.5 mg/L | 5.6 ppt | 🟢 Soft | reservoir |
| Irvington, New Jersey | 132 mg/L | 10.3 ppt | 🟠 Hard | reservoir |
| Orange, New Jersey | 126.5 mg/L | 10 ppt | 🟠 Hard | reservoir |
| Millburn, New Jersey | 111 mg/L | 9.2 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How South Orange compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ South Orange | 129 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes South Orange's Water Unique?
Local geology and source profile
South Orange, New Jersey, in Essex County — an Essex County village adjacent to Maplewood and Orange in the South Mountain area of north New Jersey — receives its municipal water from the South Orange Water Division or New Jersey American Water, drawing from the Passaic River (Essex County) or the Raritan River (Somerset County) through the New Jersey American Water system.
The moderately hard 129 mg/L hardness and TDS of 290.9 mg/L reflect the north New Jersey mixed supply character. The Passaic River at Essex County drains the New Jersey Highlands — Precambrian Reading Prong gneiss (insoluble crystalline — produces soft water); the Triassic Newark Basin redbeds (Brunswick Formation — calcareous, the dominant hardness source for north New Jersey rivers crossing the Triassic lowlands) contribute additional carbonate loading.
At 129 mg/L, South Orange's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and bathroom fixtures develop calcium deposits. Quarterly descaling is appropriate. The PFAS level of 10.2 ppt warrants a certified reverse osmosis drinking water filter — the Essex County industrial corridor (one of the most industrial counties in New Jersey), Newark Liberty International Airport (AFFF), and the north New Jersey-Passaic River PFAS complex (among the highest PFAS-contaminated regions in the US) produce South Orange's very elevated readings.
Geology & Source: South Orange in Essex County draws from the South Orange Water Division on the Passaic River (Essex County, New Jersey) — the Passaic drains the New Jersey Highlands (Precambrian Reading Prong gneiss) and Triassic Newark Basin calcareous redbeds — New Jersey Essex County Passaic River Precambrian-Triassic mixed watershed produces moderately hard water at 129 mg/L with TDS 290.9 mg/L in this Essex County New Jersey village.