Richmond Hill Water Hardness & Quality Report (2026)
Water Hardness
9.5 grains per gallon
Source
reservoir
pH Level
8.1
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
413.5 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 Richmond Hill, your appliances are currently losing 22% efficiency due to mineral buildup.
| Appliance | In Richmond Hill | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.2 yrs | 8.5 yrs | -51% |
| Washing Machine | 7.6 yrs | 12 yrs | -37% |
| Water Heater | 9.1 yrs | 15 yrs | -39% |
Regional Water Comparison
How Richmond Hill compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Richmond Hill, New York | 163 mg/L | 7.8 ppt | 🟠 Hard | reservoir |
| Kew Gardens, New York | 156 mg/L | 7.5 ppt | 🟠 Hard | reservoir |
| Briarwood, New York | 132.5 mg/L | 6.4 ppt | 🟠 Hard | reservoir |
| Queens, New York | 36 mg/L | 6.7 ppt | 🟢 Soft | reservoir |
| Forest Hills, New York | 129 mg/L | 6.2 ppt | 🟠 Hard | reservoir |
National Benchmark
How Richmond Hill compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Richmond Hill | 163 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Richmond Hill's Water Unique?
Local geology and source profile
Richmond Hill, a neighborhood in southern Queens, New York City, receives its municipal water supply from the New York City Department of Environmental Protection (NYC DEP), drawing from the Catskill–Delaware watershed system reservoirs, gravity-fed to Queens via Jamaica Bay distribution infrastructure. Richmond Hill's hardness at 163 mg/L — classified as hard — is notably higher than northern Queens zones (74.5–80.5 mg/L), reflecting the southern Queens distribution network's distinctive supply characteristics.
Richmond Hill's significantly harder reading compared to other Queens neighborhoods points to a different distribution infrastructure or supply mix in the southern Queens zone. While the Catskill–Delaware source water is inherently very soft (20–40 mg/L), the southern Queens distribution system — particularly the older cast-iron main infrastructure in Jamaica and southern Queens — interacts with the distribution system and groundwater leakage in the shallow coastal plain in ways that elevate finished hardness. Southern Queens also draws from different pressure distribution zones than northern Queens and may receive water influenced by the Queens–Nassau County boundary distribution, where some Long Island groundwater (drawn from the Lloyd Aquifer or Magothy Aquifer in Nassau) enters the distribution system.
At 163 mg/L, Richmond Hill residents face regular scale challenges. Faucet aerators and showerheads develop deposits within weeks — monthly descaling with citric acid solution is standard maintenance. Dishwashers produce better results with rinse-aid. NYC DEP consistently delivers water meeting all NYSDOH and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir supply from the Catskill–Delaware watershed via New York City DEP Queens distribution — the Devonian–Silurian Catskill Mountain sandstone and shale watershed delivers very soft source water; the Richmond Hill neighborhood in southern Queens shows moderate 163 mg/L hardness — higher than other Queens zones — reflecting distribution network characteristics and proximity to the older southern Queens cast-iron mains.