North Massapequa 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
107.3 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 Massapequa, your appliances are currently losing 9% efficiency due to mineral buildup.
| Appliance | In North Massapequa | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.3 yrs | 8.5 yrs | -14% |
| Washing Machine | 11 yrs | 12 yrs | -8% |
| Water Heater | 12.8 yrs | 15 yrs | -15% |
Regional Water Comparison
How North Massapequa compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ North Massapequa, New York | 69 mg/L | 3.4 ppt | 🟡 Moderately Hard | reservoir |
| Massapequa Park, New York | 168 mg/L | 8 ppt | 🟠 Hard | reservoir |
| Massapequa, New York | 168 mg/L | 8 ppt | 🟠 Hard | reservoir |
| South Farmingdale, New York | 157 mg/L | 7.5 ppt | 🟠 Hard | reservoir |
| North Amityville, New York | 173.5 mg/L | 8.3 ppt | 🟠 Hard | reservoir |
National Benchmark
How North Massapequa compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ North Massapequa | 69 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 Massapequa's Water Unique?
Local geology and source profile
North Massapequa, New York, in Nassau County — an unincorporated Nassau County community adjacent to Massapequa Park and Bethpage in the south Nassau County corridor — receives its municipal water from Nassau County water system or Massapequa Water District, drawing from the Long Island Aquifer (Upper Glacial and Magothy Aquifers, Nassau County) through local wells.
The soft 69 mg/L hardness and TDS of 107.3 mg/L are typical for the Nassau County Long Island Aquifer supply — slightly harder than Huntington NY (80 mg/L, Suffolk County) but in the same soft range. The Nassau County Long Island Aquifer is developed in Pleistocene Harbor Hill and Ronkonkoma Moraine glacial outwash (quartz-rich sand derived from New England crystalline), the Cretaceous Magothy Formation (fine quartz sand), and the Cretaceous Lloyd Formation (deep aquifer — quartz sand). The insoluble siliceous glacial and Cretaceous sand produces the characteristically soft Long Island water.
At 69 mg/L, North Massapequa's water is soft — essentially no scale forms, soap lathers abundantly, and appliances maintain good efficiency. Annual descaling is sufficient. The PFAS level of 3.4 ppt warrants a certified drinking water filter — the Grumman Aerospace legacy (Bethpage — the largest PFAS plume in Nassau County, well-documented in the Nassau County aquifer), the Republic Airport AFFF source, and the Nassau County Long Island PFAS background contribute to North Massapequa's readings.
Geology & Source: North Massapequa in Nassau County draws from Nassau County water on the Long Island Aquifer (Nassau Glacial Aquifer, south Nassau County) — the Long Island Aquifer is developed in Pleistocene glacial outwash sand (Harbor Hill Moraine, Ronkonkoma Moraine) — New York Long Island Pleistocene glacial outwash aquifer produces soft water at 69 mg/L with TDS 107.3 mg/L in this Nassau County New York community.