Kearny Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
349 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 Kearny, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Kearny | 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 Kearny compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Kearny, New Jersey | ≈ 120–179 mg/L | 13.1 ppt | 🟠 Hard | reservoir |
| North Arlington, New Jersey | ≈ 120–179 mg/L | 8.9 ppt | 🟠 Hard | reservoir |
| Harrison, New Jersey | 140 mg/L | 63.9 ppt | 🟠 Hard | reservoir |
| Belleville, New Jersey | 43.9 mg/L | 0 ppt | 🟢 Soft | reservoir |
| Newark, New Jersey | ≈ 0–60 mg/L | 6 ppt | 🟢 Soft | reservoir |
National Benchmark
How Kearny compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Kearny | ≈ 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 Kearny's Water Unique?
Local geology and source profile
The Kearny Water Department serves approximately 41,664 residents across Kearny and nearby areas in Hudson County, New Jersey. Water is sourced from purchased surface water drawn primarily from the Passaic River watershed, with operations supported by Veolia North America at 570 Elm Street, Kearny. Treatment involves chlorine disinfection and other methods, though specific treatment plant names are not detailed in available reports. The utility adheres to state and federal standards, with test results filed with the New Jersey Department of Environmental Protection.
The Passaic River watershed drains northern New Jersey's diverse geology, including limestone deposits and ancient sedimentary rock formations from Paleozoic eras. These bedrock sources contribute dissolved calcium and magnesium to surface water, producing a moderately mineralized character. Water picks up hardness minerals as it flows through limestone-influenced terrain, and treatment does not aggressively soften the supply, retaining this moderate mineral profile shaped by regional aquifer influences.
At moderately hard levels, Kearny's water promotes scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan while leaving spots on glassware and fixtures. Boilers and faucet aerators are particularly prone to white calcium carbonate deposits. Regular vinegar descaling, aerator screen installation, and dip tube checks help mitigate buildup. A water softener is recommended for households. Water quality shows 6 contaminants exceeding EPA health guidelines, including Chromium (hexavalent), with total dissolved solids at 186 ppm; filters are recommended due to quality concerns.
Geology & Source: Passaic River watershed — Paleozoic and Mesozoic limestone and sedimentary bedrock; calcium and magnesium dissolution yields moderately mineralized supply in northern New Jersey
Other New Jersey Water Reports
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Frequently Asked Questions
Is Kearny's water safe to drink?
Do I need a water softener in Kearny?
How does Kearny compare to the USA average?
Data Sources & Methodology
Water quality data for Kearny 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.