Cortlandt Manor Water Hardness & Quality Report (2026)
Water Hardness
9.4 grains per gallon
Source
reservoir
pH Level
8.1
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
402.6 mg/L
Est. Daily Cost
$0.43
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 Cortlandt Manor, your appliances are currently losing 21% efficiency due to mineral buildup.
| Appliance | In Cortlandt Manor | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.3 yrs | 8.5 yrs | -49% |
| Washing Machine | 7.7 yrs | 12 yrs | -36% |
| Water Heater | 9.2 yrs | 15 yrs | -39% |
Regional Water Comparison
How Cortlandt Manor compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Cortlandt Manor, New York | 160.5 mg/L | 7.7 ppt | 🟠 Hard | reservoir |
| Peekskill, New York | 144.5 mg/L | 7 ppt | 🟠 Hard | reservoir |
| Jefferson Valley-Yorktown, New York | 109 mg/L | 5.3 ppt | 🟡 Moderately Hard | reservoir |
| Ossining, New York | 109.5 mg/L | 5.3 ppt | 🟡 Moderately Hard | reservoir |
| New City, New York | 155 mg/L | 7.4 ppt | 🟠 Hard | reservoir |
National Benchmark
How Cortlandt Manor compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Cortlandt Manor | 160.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Cortlandt Manor's Water Unique?
Local geology and source profile
Cortlandt Manor, New York, in Westchester County — an unincorporated Westchester County community in the Town of Cortlandt on the Hudson River, adjacent to Peekskill, a northern Westchester Hudson Valley community — receives its municipal water from the Cortlandt Water District or United Water (Suez), which draws from the New Croton Reservoir (the largest in the NYC DEP Croton watershed system) or local Westchester water sources.
The moderately hard 160.5 mg/L hardness and TDS of 402.6 mg/L are harder than the standard NYC DEP Catskill-Delaware supply (~72-150 mg/L for the five boroughs) — reflecting either a different source blend or the Croton Reservoir system character. The Croton Watershed in Westchester and Putnam Counties drains the Hudson Highlands (Precambrian Storm King Granite, Cambrian metamorphic rocks) and the Triassic Newark Basin fringe — terrain that includes calcareous rocks contributing more dissolved minerals than the Catskill-Delaware supply, explaining the harder Cortlandt Manor reading versus NYC proper.
At 160.5 mg/L, Cortlandt Manor's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and bathroom fixtures develop calcium deposits. Quarterly descaling is appropriate. The PFAS level of 7.7 ppt warrants a certified drinking water filter — the Indian Point Energy Center (nuclear plant at the Hudson River in Cortlandt — now decommissioned — industrial chemical legacy), the West Point Military Academy AFFF complex in the Hudson Highlands, and the Westchester County defense-industrial corridor contribute to Cortlandt Manor's PFAS readings.
Geology & Source: Cortlandt Manor in Westchester County draws from Cortlandt Water District on the New Croton Reservoir (NYC DEP Croton Watershed) — the Croton watershed drains the Hudson Highlands (Precambrian gneiss and Paleozoic granite) and the Triassic calcareous fringe — Hudson Highlands Precambrian-Triassic mixed drainage produces moderately hard water at 160.5 mg/L with TDS 403 mg/L in this Westchester County New York community.