Holbrook Water Hardness & Quality Report (2026)
Water Hardness
4.8 grains per gallon
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
183.7 mg/L
Est. Daily Cost
$0.22
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 Holbrook, your appliances are currently losing 11% efficiency due to mineral buildup.
| Appliance | In Holbrook | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.9 yrs | 8.5 yrs | -19% |
| Washing Machine | 10.5 yrs | 12 yrs | -13% |
| Water Heater | 12.3 yrs | 15 yrs | -18% |
Regional Water Comparison
How Holbrook compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Holbrook, Massachusetts | 82.5 mg/L | 8.9 ppt | 🟡 Moderately Hard | reservoir |
| Randolph, Massachusetts | 18 mg/L | 4.4 ppt | 🟢 Soft | reservoir |
| Braintree, Massachusetts | 116 mg/L | 11.1 ppt | 🟡 Moderately Hard | reservoir |
| Brockton, Massachusetts | 63.5 mg/L | 7.5 ppt | 🟡 Moderately Hard | reservoir |
| Abington, Massachusetts | 55.5 mg/L | 7 ppt | 🟢 Soft | reservoir |
National Benchmark
How Holbrook compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Holbrook | 82.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Holbrook's Water Unique?
Local geology and source profile
Holbrook, Massachusetts, in Norfolk County — a Norfolk County town adjacent to Braintree and Abington south of Boston in east Massachusetts — receives its water from the Holbrook Water Department, drawing from the Monatiquot River watershed reservoirs through the east Massachusetts distribution.
The moderately hard 82.5 mg/L hardness and TDS of 183.7 mg/L reflect the Norfolk County supply's moderate Precambrian character — the Precambrian Canton Formation is largely insoluble crystalline metamorphic rock, while the Cretaceous Blue Hills Granite contributes minimal calcareous mineral content; Holbrook's higher-than-typical Massachusetts TDS suggests some influence from the town's own shallow well fields (compare Braintree MA: 80/178 in Norfolk County comparable; Abington MA: 84/189 in Plymouth County comparable; Holbrook consistent moderate from the same Norfolk County Monatiquot River Precambrian insoluble supply). The Monatiquot watershed — Precambrian Canton Formation (insoluble — primary dilutant), Cretaceous Blue Hills Granite (insoluble — secondary dilutant), and Quaternary Norfolk County glacial till (slightly calcareous — TDS contributor).
At 82.5 mg/L with TDS 184, Holbrook's water is moderately hard — mild scale buildup. Semi-annual descaling is appropriate. The PFAS level of 8.9 ppt is elevated — a certified drinking water filter with PFAS removal is recommended. Review the Holbrook Water Department's annual water quality report.
Geology & Source: Holbrook in Norfolk County draws from the Holbrook Water on the Monatiquot River watershed (Norfolk County, east Massachusetts) — the Monatiquot watershed drains Precambrian Canton Formation (insoluble) and Cretaceous Blue Hills Granite (insoluble) — Massachusetts Norfolk County Monatiquot River Precambrian insoluble supply produces moderately hard water at 82.5 mg/L with TDS 183.7 mg/L.