Northampton Water Hardness & Quality Report (2026)
Water Hardness
1.1 grains per gallon
Source
reservoir
pH Level
7.1
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
27 mg/L
Est. Daily Cost
$0.05
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 Northampton, your appliances are currently losing 2% efficiency due to mineral buildup.
| Appliance | In Northampton | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 9 yrs | 8.5 yrs | — |
| Washing Machine | 12.9 yrs | 12 yrs | — |
| Water Heater | 14.9 yrs | 15 yrs | -1% |
Regional Water Comparison
How Northampton compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Northampton, Massachusetts | 18 mg/L | 4.4 ppt | 🟢 Soft | reservoir |
| Easthampton, Massachusetts | 21.5 mg/L | 4.6 ppt | 🟢 Soft | reservoir |
| South Hadley, Massachusetts | 35.5 mg/L | 5.6 ppt | 🟢 Soft | reservoir |
| Holyoke, Massachusetts | 89 mg/L | 9.3 ppt | 🟡 Moderately Hard | reservoir |
| Amherst, Massachusetts | 70.5 mg/L | 8 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Northampton compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Northampton | 18 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Northampton's Water Unique?
Local geology and source profile
Northampton, Massachusetts, the Hampshire County seat — a major west-central Massachusetts Pioneer Valley cultural city (Northampton is the Hampshire County seat and one of the most culturally significant small cities in New England; Northampton is home of Smith College (one of the most prestigious women's liberal arts colleges in the United States — one of the 'Seven Sisters' women's colleges; Smith has been one of the most important women's educational institutions in America since its founding in 1875); Northampton is the epicenter of the 'Five College Area' (Smith, Mount Holyoke, Amherst, Hampshire, and the University of Massachusetts Amherst form one of the most significant academic clusters in the Northeast)), known as one of the most progressive and LGBTQ+-welcoming communities in the United States (Northampton was one of the first cities in the US to establish an LGBTQ+ community center, and it has been celebrated in national media for its progressive culture), a diverse Hampshire County community with a significant academic, arts, and LGBTQ+ population — draws its municipal water supply via the City of Northampton Water Division. Water hardness in Northampton measures 18 mg/L — classified as extremely soft.
Northampton's extremely soft supply reflects the west-central Massachusetts Hampshire County Pioneer Valley watershed's calcareous-poor Triassic and crystalline geology. The Northampton reservoir system drains Triassic Hartford Basin arkose and basalt (calcareous-poor), producing the extremely soft 18 mg/L.
With hardness at 18 mg/L, Northampton residents enjoy extremely soft water. City of Northampton Water Division consistently delivers water meeting all Massachusetts DEP and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir supply from the Lily Pond and Roberts Meadow Reservoirs via the City of Northampton Water Division — the Hampshire County Pioneer Valley Northampton corridor (Triassic calcareous-poor Hartford Basin basalt and Precambrian calcareous-poor granite — calcareous-poor Pioneer Valley watershed; excellent treatment); extremely soft at 18 mg/L.