Mansfield Water Hardness & Quality Report (2026)
Water Hardness
6.8 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
301.7 mg/L
Est. Daily Cost
$0.31
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 Mansfield, your appliances are currently losing 15% efficiency due to mineral buildup.
| Appliance | In Mansfield | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.8 yrs | 8.5 yrs | -32% |
| Washing Machine | 9.3 yrs | 12 yrs | -22% |
| Water Heater | 11 yrs | 15 yrs | -27% |
Regional Water Comparison
How Mansfield compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Mansfield, Massachusetts | 116 mg/L | 11.2 ppt | 🟡 Moderately Hard | reservoir |
| Norton, Massachusetts | 22 mg/L | 4.6 ppt | 🟢 Soft | reservoir |
| Easton, Massachusetts | 23.5 mg/L | 4.7 ppt | 🟢 Soft | reservoir |
| Attleboro, Massachusetts | 86 mg/L | 9.1 ppt | 🟡 Moderately Hard | reservoir |
| North Attleborough Center, Massachusetts | 123.5 mg/L | 11.7 ppt | 🟠 Hard | reservoir |
National Benchmark
How Mansfield compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mansfield | 116 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Mansfield's Water Unique?
Local geology and source profile
Mansfield, Massachusetts, in Bristol County between Brockton and Attleboro in southeastern Massachusetts — home to the Comcast Center (now Xfinity Center) outdoor amphitheater and historically a railroad junction community — receives its municipal water from the Town of Mansfield Department of Public Works Water Division, drawing from local reservoir impoundments in the upper Taunton River watershed of Bristol County. Mansfield's local reservoir system is independent of the MWRA regional supply, drawing from the different and more mineral-rich watershed geology of the southeastern Massachusetts interior.
The moderately soft 116 mg/L hardness and TDS of 301.7 mg/L are notably higher than MWRA-served Bristol County communities like nearby Easton (23.5 mg/L, TDS 36.7) — reflecting Mansfield's dependence on local Bristol County reservoir supply rather than the pristine Quabbin system. The upper Taunton River watershed drains Bristol County's varied geology: Triassic Hartford Basin sedimentary red beds (similar to the Connecticut Valley basins), Carboniferous Narragansett Basin metasedimentary rocks, and intrusive granites, all contributing moderate mineral content to watershed drainage. This produces water that is notably harder than MWRA Quabbin supply.
At 116 mg/L, Mansfield's water is moderately soft — manageable with routine household maintenance. Scale forms gradually in kettles and appliances over months, the dishwasher benefits from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling of heating appliances is appropriate. The very high PFAS level of 11.2 ppt is the critical water quality concern for Mansfield — Bristol County has documented PFAS contamination from former military and industrial sources in the region, including influences from the Otis/Camp Edwards and South Weymouth military bases that contaminate broader southeastern Massachusetts groundwater recharge zones. A certified reverse osmosis filter for all drinking water is strongly recommended.
Geology & Source: Mansfield in Bristol County draws from the Town of Mansfield local reservoir system in the upper Taunton River watershed — the Taunton basin watershed drains Bristol County over Triassic Hartford Basin sedimentary rocks and Carboniferous metasedimentary terrain — Triassic basin and metasedimentary watershed drainage produces moderately soft water at 116 mg/L in this southeast Massachusetts community.