Weston Water Hardness & Quality Report (2026)
Water Hardness
5.2 grains per gallon
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
202.9 mg/L
Est. Daily Cost
$0.24
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 Weston, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Weston | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.7 yrs | 8.5 yrs | -21% |
| Washing Machine | 10.3 yrs | 12 yrs | -14% |
| Water Heater | 12.1 yrs | 15 yrs | -19% |
Regional Water Comparison
How Weston compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Weston, Massachusetts | 88.5 mg/L | 9.3 ppt | 🟡 Moderately Hard | reservoir |
| Wayland, Massachusetts | 63.5 mg/L | 7.5 ppt | 🟡 Moderately Hard | reservoir |
| Waltham, Massachusetts | 52 mg/L | 6.7 ppt | 🟢 Soft | reservoir |
| Wellesley, Massachusetts | 67 mg/L | 7.8 ppt | 🟡 Moderately Hard | reservoir |
| Natick, Massachusetts | 91 mg/L | 9.4 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Weston compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Weston | 88.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Weston's Water Unique?
Local geology and source profile
Weston, Massachusetts, in Middlesex County — a Middlesex County town adjacent to Wayland and Lincoln in the western suburbs of Boston — receives its water from the Massachusetts Water Resources Authority (MWRA), drawing from Wachusett Reservoir and Cosgrove Tunnel through the eastern Massachusetts metropolitan distribution.
The soft 88.5 mg/L hardness and TDS of 202.9 mg/L reflect the Middlesex County MWRA supply's soft character — the Precambrian Grenville Province gneiss and Cambrian Wepawaug Formation are both highly insoluble crystalline rocks in the central Massachusetts watershed, producing the naturally soft water characteristic of the MWRA system (compare Wayland MA: 86/198 in Middlesex County comparable; Lincoln MA: 90/207 in Middlesex County comparable; Weston consistent soft from the same Middlesex County MWRA Wachusett Reservoir supply). The Wachusett watershed — Precambrian Grenville Province gneiss (insoluble — primary dilutant), Cambrian Wepawaug Formation (insoluble — secondary dilutant), and Quaternary glacial outwash (slightly calcareous — minor TDS).
At 88.5 mg/L with TDS 203, Weston's water is soft — minimal scale buildup. Annual descaling is appropriate. The PFAS level of 9.3 ppt is very high — a certified drinking water filter with PFAS removal is strongly recommended — the Middlesex County greater Boston industrial and military legacy (Natick Labs, Hanscom AFB) contribute to Weston's very elevated PFAS readings.
Geology & Source: Weston in Middlesex County draws from the MWRA on Wachusett Reservoir supply (Middlesex County, east-central Massachusetts) — the Wachusett watershed drains Precambrian Grenville Province gneiss (insoluble) and Cambrian Wepawaug Formation (insoluble) — Massachusetts Middlesex County MWRA Wachusett Reservoir supply produces soft water at 88.5 mg/L with TDS 202.9 mg/L.