Harrison Water Hardness & Quality Report (2026)
Water Hardness
7.4 grains per gallon
Source
reservoir
pH Level
7.8
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
271.1 mg/L
Est. Daily Cost
$0.34
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 Harrison, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Harrison | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.4 yrs | 8.5 yrs | -36% |
| Washing Machine | 8.9 yrs | 12 yrs | -26% |
| Water Heater | 10.6 yrs | 15 yrs | -29% |
Regional Water Comparison
How Harrison compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Harrison, New York | 126 mg/L | 6.1 ppt | 🟠 Hard | reservoir |
| Mamaroneck, New York | 148 mg/L | 7.1 ppt | 🟠 Hard | reservoir |
| Rye, New York | 86.5 mg/L | 4.2 ppt | 🟡 Moderately Hard | reservoir |
| Port Chester, New York | 82 mg/L | 4 ppt | 🟡 Moderately Hard | reservoir |
| Scarsdale, New York | 164.5 mg/L | 7.9 ppt | 🟠 Hard | reservoir |
National Benchmark
How Harrison compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Harrison | 126 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Harrison's Water Unique?
Local geology and source profile
Harrison, New York, in Westchester County — a major south Westchester County suburban community (Harrison is a significant Westchester County town — a south Westchester suburb adjacent to White Plains and Rye; Harrison is known for its high-income residential character, with the Purchase hamlet (a part of Harrison) being one of the most exclusive and affluent communities in Westchester County; Purchase is home of the PepsiCo World Headquarters (one of the most architecturally significant corporate headquarters in the United States — the PepsiCo campus in Purchase features a world-class sculpture garden with works by Auguste Rodin, Alexander Calder, Henry Moore, and other major 20th-century artists; the PepsiCo sculpture garden is one of the most significant corporate art collections in the world)), home of the Manhattanville University (formerly Manhattan College, Purchase) campus, a diverse Westchester County community with a significant affluent professional population and a diverse working-class community in the Harrison village area, adjacent to Mamaroneck and White Plains in the south Westchester corridor — draws its municipal water supply via the NYC DEP and Westchester County Water District. Water hardness in Harrison measures 126 mg/L — classified as moderately hard.
Harrison's moderate hardness reflects the south Westchester County supply zone's distribution characteristics. The Westchester County Water District distributes Catskill–Delaware and local reservoir supply to the south Westchester Harrison zone, producing the moderate 126 mg/L.
At 126 mg/L, Harrison residents encounter moderate scale accumulation. Monthly cleaning is recommended. Westchester County Water District 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 DEP and Westchester County Water District — the Westchester County south Westchester Harrison corridor (Precambrian calcareous-poor Westchester gneiss — NYC Catskill–Delaware and Westchester County supply; south Westchester distribution to Harrison zone); moderately hard supply at 126 mg/L in Westchester County.