North Lindenhurst Water Hardness & Quality Report (2026)
Water Hardness
~0–59 mg/L
Softestimated · not lab-verified
Source
reservoir
pH Level
7.4
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
106.2 mg/L
Est. Daily Cost
$0.08
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 North Lindenhurst, your appliances are currently losing 4% efficiency due to mineral buildup.
| Appliance | In North Lindenhurst | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.2 yrs | 8.5 yrs | -4% |
| Washing Machine | 11.5 yrs | 12 yrs | -4% |
| Water Heater | 14.4 yrs | 15 yrs | -4% |
Regional Water Comparison
How North Lindenhurst compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ North Lindenhurst, New York | ≈ 0–59 mg/L | 3.4 ppt | 🟢 Soft | reservoir |
| West Babylon, New York | ≈ 120–179 mg/L | 6.7 ppt | 🟠 Hard | reservoir |
| Lindenhurst, New York | 33.5 mg/L | 4.5 ppt | 🟢 Soft | groundwater |
| Copiague, New York | ≈ 0–60 mg/L | 3.5 ppt | 🟢 Soft | reservoir |
| Wyandanch, New York | ≈ 120–179 mg/L | 4.5 ppt | 🟠 Hard | reservoir |
National Benchmark
How North Lindenhurst compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ North Lindenhurst | ≈ 0–59 mg/L | 🟢 None |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes North Lindenhurst's Water Unique?
Local geology and source profile
Suffolk County Water Authority supplies North Lindenhurst with groundwater sourced from the Upper Glacial and Magothy aquifers. These aquifers are part of a vast system tapped by SCWA through more than 70 well fields and treatment facilities across Long Island. For North Lindenhurst, the water originates from specific wells within the SCWA's central Nassau-Suffolk network. Treatment involves aeration, filtration, chlorination, and corrosion control at local plants before reaching the approximately 2,000 residents served.
This groundwater comes from Long Island's extensive glacial aquifer system. The Upper Glacial aquifer consists of Pleistocene-age sands and gravels, sitting atop the Cretaceous-era Magothy Formation. Underlying Raritan clays act as confining layers, limiting mineral interaction. Because the geology is dominated by silica-rich sands and contains little limestone or dolomite, the water picks up minimal calcium and magnesium. This results in a soft water profile, with low overall mineralization shaped by limited rock weathering.
With soft water, you'll notice less scale buildup on your pipes, water heaters, and appliances, which can extend their lifespan and improve efficiency. Soap and detergents will lather more readily, meaning you can use less product for cleaning tasks. While a water softener isn't necessary, maintaining a balanced pH through corrosion inhibitors is recommended by SCWA to minimize potential copper corrosion in older plumbing systems. Laundry will feel softer, and fixtures will remain cleaner without the constant battle against mineral deposits. Recent tests confirm contaminant levels well below federal safety standards.
Geology & Source: Upper Glacial and Magothy aquifers; Pleistocene sands, gravels, and Cretaceous clays; low limestone content and silica-rich sands yield soft water
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Frequently Asked Questions
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How does North Lindenhurst compare to the USA average?
Data Sources & Methodology
Water quality data for North Lindenhurst 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.