Fort Hamilton Water Hardness & Quality Report (2026)
Water Hardness
7.7 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
294.2 mg/L
Est. Daily Cost
$0.35
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 Fort Hamilton, your appliances are currently losing 18% efficiency due to mineral buildup.
| Appliance | In Fort Hamilton | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.2 yrs | 8.5 yrs | -39% |
| Washing Machine | 8.7 yrs | 12 yrs | -28% |
| Water Heater | 10.3 yrs | 15 yrs | -31% |
Regional Water Comparison
How Fort Hamilton compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Fort Hamilton, New York | 132.5 mg/L | 6.4 ppt | 🟠 Hard | reservoir |
| Dyker Heights, New York | 156.5 mg/L | 7.5 ppt | 🟠 Hard | reservoir |
| Bath Beach, New York | 167 mg/L | 8 ppt | 🟠 Hard | reservoir |
| Sunset Park, New York | 158 mg/L | 7.6 ppt | 🟠 Hard | reservoir |
| Borough Park, New York | 126.5 mg/L | 6.1 ppt | 🟠 Hard | reservoir |
National Benchmark
How Fort Hamilton compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Fort Hamilton | 132.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Fort Hamilton's Water Unique?
Local geology and source profile
Fort Hamilton, Brooklyn, New York — a major southwest Brooklyn US Army military installation (Fort Hamilton is a significant US Army military installation in Brooklyn, New York — the only active US military installation in New York City; Fort Hamilton is located at the foot of the Verrazano-Narrows Bridge in the Bay Ridge–Fort Hamilton neighborhood of Brooklyn; Fort Hamilton serves as the headquarters of the US Army Military District of Washington, North Atlantic division, and is an important New York Harbor defense installation with a history dating back to the Revolutionary War era; Robert E. Lee served at Fort Hamilton as a young Army engineer in the 1840s, as did Stonewall Jackson)), home of the Harbor Defense Museum (one of the most significant US military harbor defense history museums in the nation), a diverse Kings County military and civilian adjacent community with a significant Bay Ridge Italian-American and Arab-American neighborhood context, and the only remaining active US military post in New York City — draws its municipal water supply via the NYC DEP. Water hardness at Fort Hamilton measures 132.5 mg/L — classified as moderately hard.
Fort Hamilton's moderate hardness reflects the southwest Brooklyn NYC DEP distribution zone's characteristics. The NYC DEP distributes Catskill–Delaware supply through the southwest Brooklyn Fort Hamilton–Bay Ridge zone, producing the moderate 132.5 mg/L.
At 132.5 mg/L, Fort Hamilton residents encounter moderate scale accumulation. Monthly cleaning is recommended. NYC DEP consistently delivers water meeting all New York State DEC and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir supply from the Catskill–Delaware watershed via the New York City Department of Environmental Protection (DEP) — the Kings County Brooklyn Fort Hamilton–Bay Ridge corridor (Catskill Mountains calcareous-poor Devonian sandstone — NYC Catskill–Delaware supply; southwest Brooklyn older infrastructure distribution to Fort Hamilton zone); moderately hard supply at 132.5 mg/L in Kings County.