Mercerville-Hamilton Square Water Hardness & Quality Report (2026)
Water Hardness
3.8 grains per gallon
Source
reservoir
pH Level
7.4
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
112.1 mg/L
Est. Daily Cost
$0.17
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 Mercerville-Hamilton Square, your appliances are currently losing 9% efficiency due to mineral buildup.
| Appliance | In Mercerville-Hamilton Square | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.5 yrs | 8.5 yrs | -12% |
| Washing Machine | 11.2 yrs | 12 yrs | -7% |
| Water Heater | 13 yrs | 15 yrs | -13% |
Regional Water Comparison
How Mercerville-Hamilton Square compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Mercerville-Hamilton Square, New Jersey | 64.5 mg/L | 6.6 ppt | 🟡 Moderately Hard | reservoir |
| Mercerville, New Jersey | 62 mg/L | 6.4 ppt | 🟡 Moderately Hard | reservoir |
| Hamilton Square, New Jersey | 77 mg/L | 7.3 ppt | 🟡 Moderately Hard | reservoir |
| Trenton, New Jersey | 167.5 mg/L | 12.3 ppt | 🟠 Hard | reservoir |
| Princeton, New Jersey | 168 mg/L | 12.4 ppt | 🟠 Hard | reservoir |
National Benchmark
How Mercerville-Hamilton Square compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mercerville-Hamilton Square | 64.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Mercerville-Hamilton Square's Water Unique?
Local geology and source profile
Mercerville-Hamilton Square, New Jersey, in Mercer County — a major central New Jersey Trenton suburban community (Mercerville-Hamilton Square is a significant Mercer County unincorporated community — part of Hamilton Township, one of the most populous municipalities in Mercer County; Mercerville-Hamilton Square is a classic mid-20th century New Jersey suburban development adjacent to Trenton; Hamilton Township is one of the most important suburban communities in the Trenton metropolitan area — combining substantial residential, commercial, and government employment sectors; the area is adjacent to the New Jersey Statehouse and Trenton governmental center (Trenton is the state capital of New Jersey — the Mercer County–Trenton corridor is a significant center of New Jersey government employment, with the State House, New Jersey Department of Transportation, and numerous state agencies located in the broader corridor); Hamilton Township is one of the most diverse communities in central New Jersey, with a complex mix of older working-class neighborhoods and newer suburban developments — draws its municipal water supply via the New Jersey American Water. Water hardness in Mercerville-Hamilton Square measures 64.5 mg/L — classified as moderately soft.
Mercerville-Hamilton Square's moderate softness reflects the central NJ Mercer County Delaware River watershed's calcareous-poor character. The NJAW Delaware River watershed supplies water with effective treatment, producing the moderately soft 64.5 mg/L.
With hardness at 64.5 mg/L, Mercerville-Hamilton Square residents enjoy moderately soft water. New Jersey American Water consistently delivers water meeting all New Jersey DEP and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir supply from the Delaware River watershed via the New Jersey American Water — the Mercer County central NJ Trenton suburban Mercerville corridor (Precambrian calcareous-poor NJ Highlands gneiss — the calcareous-poor central NJ Mercer County Delaware River Highlands watershed; effective treatment); moderately soft supply at 64.5 mg/L in Mercer County.