Rockland Water Hardness & Quality Report (2026)
Water Hardness
2.3 grains per gallon
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
69.8 mg/L
Est. Daily Cost
$0.11
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 Rockland, your appliances are currently losing 5% efficiency due to mineral buildup.
| Appliance | In Rockland | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.3 yrs | 8.5 yrs | -2% |
| Washing Machine | 12.1 yrs | 12 yrs | — |
| Water Heater | 14 yrs | 15 yrs | -7% |
Regional Water Comparison
How Rockland compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Rockland, Massachusetts | 40 mg/L | 5.9 ppt | 🟢 Soft | reservoir |
| Abington, Massachusetts | 55.5 mg/L | 7 ppt | 🟢 Soft | reservoir |
| Whitman, Massachusetts | 100.5 mg/L | 10.1 ppt | 🟡 Moderately Hard | reservoir |
| Weymouth, Massachusetts | 91.5 mg/L | 9.5 ppt | 🟡 Moderately Hard | reservoir |
| Hanover, Massachusetts | 49.5 mg/L | 6.5 ppt | 🟢 Soft | reservoir |
National Benchmark
How Rockland compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Rockland | 40 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Rockland's Water Unique?
Local geology and source profile
Rockland, Massachusetts, in Plymouth County — a Plymouth County town adjacent to Abington and Hanover in the south Plymouth County corridor, in the South Shore of Massachusetts Bay — receives its municipal water from the Rockland Water Division, drawing from Oldham Pond (Plymouth County) or Ames Pond through the Rockland municipal reservoir system.
The extremely soft 40 mg/L hardness and very low TDS of 69.8 mg/L reflect the south Plymouth County's insoluble crystalline and glacial geology. The Rockland watershed drains the Eastern Massachusetts Coastal Plain — Precambrian Dedham Granodiorite and Milford Granite (insoluble crystalline), Pennsylvanian Narragansett Basin Rhode Island Formation (insoluble quartz-coal argillite — no carbonate), and Pleistocene Cape Cod outwash sand (silica-only). The entirely insoluble silicate bedrock produces the near-distilled soft water characteristic of the south Plymouth County supply.
At 40 mg/L, Rockland's water is extremely soft — no scale ever forms, soap lathers maximally, and appliances achieve maximum lifespan. No descaling is needed. The PFAS level of 5.9 ppt warrants a certified drinking water filter — the South Weymouth Naval Air Station (Plymouth County — AFFF in the North River watershed), the Brockton industrial corridor, and the south Plymouth County PFAS background contribute to Rockland's elevated readings.
Geology & Source: Rockland in Plymouth County draws from the Rockland Water Division on Oldham Pond (North River watershed, Plymouth County) — the North River drains the Eastern Massachusetts Coastal Plain (Precambrian Dedham Granodiorite, Pennsylvanian Narragansett Basin argillite) — Massachusetts Plymouth County Precambrian crystalline watershed produces extremely soft water at 40 mg/L with TDS 69.8 mg/L in this Plymouth County Massachusetts town.