Dumont Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
462 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 Dumont, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Dumont | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Dumont compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Dumont, New Jersey | ≈ 120–179 mg/L | 11 ppt | 🟠 Hard | reservoir |
| Bergenfield, New Jersey | ≈ 120–179 mg/L | 5.4 ppt | 🟠 Hard | reservoir |
| New Milford, New Jersey | ≈ 180+ mg/L | 8.6 ppt | 🔴 Very Hard | reservoir |
| Tenafly, New Jersey | ≈ 120–179 mg/L | 11.7 ppt | 🟠 Hard | reservoir |
| River Edge, New Jersey | ≈ 120–179 mg/L | 5.2 ppt | 🟠 Hard | reservoir |
National Benchmark
How Dumont compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Dumont | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Dumont's Water Unique?
Local geology and source profile
Dumont Borough Water Department serves approximately 18,000 residents in Bergen County, NJ, purchasing treated water from New Jersey American Water. Sources include surface water from the Hackensack River and Woodale Reservoir, supplemented by groundwater wells tapping the Potomac-Raritan-Magothy aquifer. Treatment occurs at NJ American Water facilities including the Oradell treatment plant, with distribution through Dumont's local mains. No dedicated Dumont treatment plant exists; the utility relies entirely on the regional system for treatment and distribution.
The Hackensack River watershed drains Triassic and Cretaceous sedimentary rocks — including shales, sandstones, and carbonate layers — across the Watchung Mountains and Piedmont. The Potomac-Raritan-Magothy aquifer, a major coastal plain system, consists of unconsolidated Cretaceous sands with clay confining layers. The Lockatong Formation (Triassic) limestone and dolomite dissolve calcium and magnesium as water percolates through carbonate-rich bedrock, yielding a hard supply typical of Piedmont province geology with glacial till overlays influencing infiltration.
Hard water in Dumont causes scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan. White deposits on fixtures and soap scum are common. Annual vinegar descaling, regular filter changes, and magnetic conditioners help mitigate effects. A water softener is recommended to protect appliances and improve cleaning. Dumont water meets EPA standards; lead levels are below action limits per recent reports. Eight contaminants exceed health guidelines including PFAS, haloacetic acids, and chromium-6. Treatment involves coagulation, filtration, chlorination, and corrosion control; NJ American Water does not soften, preserving beneficial minerals.
Geology & Source: Hackensack River watershed and Potomac-Raritan-Magothy aquifer (Cretaceous sands/clays); Lockatong Formation (Triassic) limestone and dolomite dissolve calcium and magnesium — hard supply; Piedmont province with glacial till overlays
Other New Jersey Water Reports
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Frequently Asked Questions
Is Dumont's water safe to drink?
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How does Dumont compare to the USA average?
Data Sources & Methodology
Water quality data for Dumont is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.