Tyngsboro Water Hardness & Quality Report (2026)
Water Hardness
7.3 grains per gallon
Source
reservoir
pH Level
8
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
335.4 mg/L
Est. Daily Cost
$0.33
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 Tyngsboro, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Tyngsboro | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.5 yrs | 8.5 yrs | -35% |
| Washing Machine | 9 yrs | 12 yrs | -25% |
| Water Heater | 10.6 yrs | 15 yrs | -29% |
Regional Water Comparison
How Tyngsboro compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Tyngsboro, Massachusetts | 124.5 mg/L | 11.7 ppt | 🟠 Hard | reservoir |
| Chelmsford, Massachusetts | 123 mg/L | 11.7 ppt | 🟠 Hard | reservoir |
| Westford, Massachusetts | 87 mg/L | 9.1 ppt | 🟡 Moderately Hard | reservoir |
| Nashua, New Hampshire | 77.5 mg/L | 8.5 ppt | 🟡 Moderately Hard | reservoir |
| Pelham, New Hampshire | 29 mg/L | 4.7 ppt | 🟢 Soft | reservoir |
National Benchmark
How Tyngsboro compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Tyngsboro | 124.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Tyngsboro's Water Unique?
Local geology and source profile
Tyngsboro, Massachusetts, in Middlesex County — a Middlesex County town adjacent to Lowell and Chelmsford on the Merrimack River in northeast Massachusetts — receives its water from the Tyngsboro Water Department or Lowell Regional Water Utility, drawing from the Merrimack River through the northeast Massachusetts distribution.
The moderately hard 124.5 mg/L hardness and TDS of 335.4 mg/L are notably elevated for northeast Massachusetts — the Precambrian Grenville Province gneiss provides insoluble dilution, but Cambrian Eliot Formation and Silurian calcareous metasediments in the Merrimack drainage contribute dissolved mineral content from New Hampshire calcareous zones upstream (compare Lowell MA: 121/328 in Middlesex County comparable; Chelmsford MA: 127/342 in Middlesex County comparable; Tyngsboro consistent moderate from the same Middlesex County Merrimack River Precambrian supply). The Merrimack watershed — Precambrian Grenville Province gneiss (insoluble — primary dilutant), Cambrian Eliot Formation (slightly calcareous — primary hardness contributor), and Quaternary Merrimack alluvium (calcareous — TDS contributor).
At 124.5 mg/L with TDS 335, Tyngsboro's water is moderately hard. Semi-annual descaling is appropriate. The PFAS level of 11.7 ppt is very high — a certified filter with PFAS removal is strongly recommended — the Middlesex County northeast Massachusetts industrial legacy (Lowell textile mills area, former military sites) contributes to Tyngsboro's very elevated PFAS readings.
Geology & Source: Tyngsboro in Middlesex County draws from the Tyngsboro Water on the Merrimack River (Middlesex County, northeast Massachusetts) — the Merrimack drains Precambrian Grenville Province gneiss (insoluble) and Cambrian Eliot Formation (slightly calcareous) — Massachusetts Middlesex County Merrimack River Precambrian supply produces moderately hard water at 124.5 mg/L with TDS 335.4 mg/L.