North Amityville Water Hardness & Quality Report (2026)
Water Hardness
10.1 grains per gallon
Source
reservoir
pH Level
8.2
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
457.8 mg/L
Est. Daily Cost
$0.46
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 Amityville, your appliances are currently losing 23% efficiency due to mineral buildup.
| Appliance | In North Amityville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.9 yrs | 8.5 yrs | -54% |
| Washing Machine | 7.2 yrs | 12 yrs | -40% |
| Water Heater | 8.7 yrs | 15 yrs | -42% |
Regional Water Comparison
How North Amityville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ North Amityville, New York | 173.5 mg/L | 8.3 ppt | 🟠 Hard | reservoir |
| East Massapequa, New York | 172.5 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
| South Farmingdale, New York | 157 mg/L | 7.5 ppt | 🟠 Hard | reservoir |
| Copiague, New York | 70.5 mg/L | 3.5 ppt | 🟡 Moderately Hard | reservoir |
| Massapequa Park, New York | 168 mg/L | 8 ppt | 🟠 Hard | reservoir |
National Benchmark
How North Amityville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ North Amityville | 173.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes North Amityville's Water Unique?
Local geology and source profile
North Amityville, New York, in Suffolk County — an unincorporated Suffolk County community adjacent to Amityville and Lindenhurst in the south Suffolk County corridor — receives its municipal water from the Suffolk County Water Authority (SCWA), drawing from the Long Island Aquifer (Upper Glacial Aquifer and Magothy Aquifer, Suffolk County) through local well fields.
The hard 173.5 mg/L hardness and elevated TDS of 457.8 mg/L are unusually hard for the Long Island Aquifer (North Massapequa Nassau County: 69 mg/L), suggesting the south Suffolk County groundwater contacts a different aquifer horizon. The deeper Cretaceous Magothy Formation at south Suffolk County depths can be harder than the shallow Upper Glacial Aquifer, possibly with elevated TDS from saltwater intrusion in the south Suffolk County coastal corridor. The Long Island coastal zone aquifer shows increasing TDS and hardness approaching the south shore.
At 173.5 mg/L, North Amityville's water is hard — scale builds steadily in kettles and appliances, dishwashers benefit from rinse aid, and faucet aerators need regular cleaning. Monthly descaling of frequently used appliances is recommended. The PFAS level of 8.3 ppt warrants a certified drinking water filter — Grumman Aerospace Bethpage (Nassau County), Republic Airport (Suffolk County — AFFF), and the Nassau-Suffolk Long Island industrial PFAS complex contribute to North Amityville's elevated readings.
Geology & Source: North Amityville in Suffolk County draws from Suffolk County Water Authority on the Long Island Aquifer (Upper Glacial and Magothy Aquifers, south Suffolk County) — the Long Island Aquifer is developed in Pleistocene glacial outwash sand (Ronkonkoma Moraine) and Cretaceous Magothy Formation — New York Long Island Pleistocene glacial-Cretaceous aquifer produces hard water at 173.5 mg/L with TDS 457.8 mg/L in this Suffolk County New York community.