North Lindenhurst Water Hardness & Quality Report (2026)
Water Hardness
4 grains per gallon
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
$0.18
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 North Lindenhurst, your appliances are currently losing 9% efficiency due to mineral buildup.
| Appliance | In North Lindenhurst | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.3 yrs | 8.5 yrs | -14% |
| Washing Machine | 11.1 yrs | 12 yrs | -8% |
| Water Heater | 12.9 yrs | 15 yrs | -14% |
Regional Water Comparison
How North Lindenhurst compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ North Lindenhurst, New York | 68.5 mg/L | 3.4 ppt | 🟡 Moderately Hard | reservoir |
| West Babylon, New York | 140.5 mg/L | 6.7 ppt | 🟠 Hard | reservoir |
| Lindenhurst, New York | 92.5 mg/L | 4.5 ppt | 🟡 Moderately Hard | reservoir |
| Copiague, New York | 70.5 mg/L | 3.5 ppt | 🟡 Moderately Hard | reservoir |
| Wyandanch, New York | 92.5 mg/L | 4.5 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How North Lindenhurst compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ North Lindenhurst | 68.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes North Lindenhurst's Water Unique?
Local geology and source profile
North Lindenhurst, New York, in Suffolk County — a Suffolk County hamlet adjacent to Lindenhurst and North Babylon on the south shore of Long Island — receives its water from the Suffolk County Water Authority, drawing from the Long Island sole-source aquifer through the south-central Long Island distribution.
The soft 68.5 mg/L hardness and low TDS of 106.2 mg/L reflect the Suffolk County aquifer supply's soft character — the Cretaceous Magothy Formation is a predominantly insoluble sand aquifer, and the overlying Pleistocene glacial outwash sands contain minor calcareous glacial carbonate fragments (compare Lindenhurst NY: 66/102 in Suffolk County comparable; North Babylon NY: 70/110 in Suffolk County comparable; North Lindenhurst consistent soft from the same Suffolk County Long Island Cretaceous aquifer supply). The Long Island aquifer — Cretaceous Magothy Formation (insoluble — primary dilutant), Pleistocene glacial outwash (slightly calcareous — primary hardness contributor), and Holocene beach deposits (slightly calcareous — minor TDS).
At 68.5 mg/L with TDS 106, North Lindenhurst's water is soft — minimal scale buildup. The PFAS level of 3.4 ppt is moderate — review the Suffolk County Water Authority's annual water quality report, which monitors extensively for the agricultural and industrial PFAS sources affecting Long Island's sole-source aquifer.
Geology & Source: North Lindenhurst in Suffolk County draws from the Suffolk County Water Authority on the Long Island aquifer (Suffolk County, south-central New York) — the Long Island aquifer drains Cretaceous Magothy Formation (insoluble) and Pleistocene glacial outwash (slightly calcareous) — New York Suffolk County Long Island Cretaceous aquifer supply produces soft water at 68.5 mg/L with TDS 106.2 mg/L.