Massapequa Park Water Hardness & Quality Report (2026)
Water Hardness
9.8 grains per gallon
Source
reservoir
pH Level
8.2
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
434.2 mg/L
Est. Daily Cost
$0.45
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 Massapequa Park, your appliances are currently losing 22% efficiency due to mineral buildup.
| Appliance | In Massapequa Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.1 yrs | 8.5 yrs | -52% |
| Washing Machine | 7.4 yrs | 12 yrs | -38% |
| Water Heater | 8.9 yrs | 15 yrs | -41% |
Regional Water Comparison
How Massapequa Park compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Massapequa Park, New York | 168 mg/L | 8 ppt | 🟠 Hard | reservoir |
| Massapequa, New York | 168 mg/L | 8 ppt | 🟠 Hard | reservoir |
| East Massapequa, New York | 172.5 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
| North Massapequa, New York | 69 mg/L | 3.4 ppt | 🟡 Moderately Hard | reservoir |
| North Amityville, New York | 173.5 mg/L | 8.3 ppt | 🟠 Hard | reservoir |
National Benchmark
How Massapequa Park compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Massapequa Park | 168 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Massapequa Park's Water Unique?
Local geology and source profile
Massapequa Park, New York, in Nassau County — a Nassau County village adjacent to Massapequa and Amityville on the south shore of Long Island — receives its municipal water from the Nassau County Department of Public Works or the Suffolk County Water Authority, drawing from the Long Island Aquifer (Upper Glacial and Magothy Aquifers) through local well fields in south Nassau County.
The hard 168 mg/L hardness and elevated TDS of 434.2 mg/L reflect the south Nassau County Long Island Aquifer's harder character — the south Nassau zone draws from deeper aquifer horizons with greater calcareous content. The Pleistocene glacial outwash and Cretaceous Magothy Formation (quartz sand aquifer with calcareous cement zones in south Nassau) produce the elevated hardness characteristic of south Nassau-north Suffolk communities.
At 168 mg/L, Massapequa Park's water is hard — scale builds steadily in kettles and appliances, dishwashers benefit from rinse aid, and water heaters should be descaled annually. Monthly descaling is recommended. The PFAS level of 8.0 ppt warrants a certified drinking water filter — the Grumman Aerospace Bethpage PFAS plume (Nassau County — the largest Long Island PFAS contamination site), the south Nassau aquifer PFAS legacy, and the Nassau County industrial corridor contribute to Massapequa Park's elevated readings.
Geology & Source: Massapequa Park in Nassau County draws from Nassau County DPW on the Long Island Aquifer (south Nassau County) — the aquifer is developed in Pleistocene glacial outwash and Cretaceous Magothy Formation (quartz sand) — New York Long Island Pleistocene-Cretaceous aquifer produces hard water at 168 mg/L with TDS 434.2 mg/L in this Nassau County New York village.