Bellmore Water Hardness & Quality Report (2026)
Water Hardness
4.6 grains per gallon
Source
reservoir
pH Level
7.5
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
129.9 mg/L
Est. Daily Cost
$0.21
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 Bellmore, your appliances are currently losing 10% efficiency due to mineral buildup.
| Appliance | In Bellmore | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7 yrs | 8.5 yrs | -18% |
| Washing Machine | 10.7 yrs | 12 yrs | -11% |
| Water Heater | 12.5 yrs | 15 yrs | -17% |
Regional Water Comparison
How Bellmore compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Bellmore, New York | 78.5 mg/L | 3.9 ppt | 🟡 Moderately Hard | reservoir |
| Wantagh, New York | 121 mg/L | 5.8 ppt | 🟠 Hard | reservoir |
| North Bellmore, New York | 174 mg/L | 8.3 ppt | 🟠 Hard | reservoir |
| Merrick, New York | 72.5 mg/L | 3.6 ppt | 🟡 Moderately Hard | reservoir |
| Seaford, New York | 97.5 mg/L | 4.7 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Bellmore compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Bellmore | 78.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Bellmore's Water Unique?
Local geology and source profile
Bellmore, New York, in Nassau County — a Nassau County hamlet adjacent to North Bellmore and Merrick on the South Shore of Long Island — receives its municipal water from New York City DEP or a local water district drawing from the NYC Catskill-Delaware system delivered to the western Long Island service area (Nassau County).
The moderately soft 78.5 mg/L hardness and TDS of 129.9 mg/L are consistent with the western-central Nassau County NYCDEP supply zone (Roosevelt: 70 mg/L; North Valley Stream: 74 mg/L) — softer than the eastern Nassau Long Island Aquifer communities (Bethpage: 90 mg/L; Levittown: ~155 mg/L; East Setauket: 177 mg/L). NYC Catskill-Delaware water from the Devonian Catskill Formation sandstone (insoluble) produces the soft western Nassau South Shore supply.
At 78.5 mg/L, Bellmore's water is moderately soft — light scale forms slowly in appliances, dishwashers remain efficient, and bathroom fixtures need occasional cleaning. Semi-annual descaling is appropriate. The PFAS level of 3.9 ppt is low — the NYCDEP Catskill-Delaware filtered supply carries minimal PFAS, and the western-central Nassau South Shore benefits from the clean NYC treated water.
Geology & Source: Bellmore in Nassau County draws from New York City DEP on the Catskill-Delaware and Croton watersheds (Nassau County, south Long Island) — the Catskill-Delaware drains the Catskill Mountains (Devonian Catskill Formation sandstone — insoluble) — New York Nassau County NYCDEP Catskill-Delaware watershed produces moderately soft water at 78.5 mg/L with TDS 129.9 mg/L in this Nassau County New York community.