Tewksbury Water Hardness & Quality Report (2026)
Water Hardness
5.4 grains per gallon
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
214.5 mg/L
Est. Daily Cost
$0.25
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 Tewksbury, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Tewksbury | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.6 yrs | 8.5 yrs | -22% |
| Washing Machine | 10.2 yrs | 12 yrs | -15% |
| Water Heater | 11.9 yrs | 15 yrs | -21% |
Regional Water Comparison
How Tewksbury compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Tewksbury, Massachusetts | 92 mg/L | 9.5 ppt | 🟡 Moderately Hard | reservoir |
| Billerica, Massachusetts | 28 mg/L | 5 ppt | 🟢 Soft | reservoir |
| Lowell, Massachusetts | 99.5 mg/L | 10 ppt | 🟡 Moderately Hard | reservoir |
| Wilmington, Massachusetts | 112.5 mg/L | 10.9 ppt | 🟡 Moderately Hard | reservoir |
| Dracut, Massachusetts | 106 mg/L | 10.5 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Tewksbury compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Tewksbury | 92 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Tewksbury's Water Unique?
Local geology and source profile
Tewksbury, Massachusetts, in Middlesex County — a major northeast Massachusetts Lowell suburban community (Tewksbury is a significant Middlesex County town — a northeast Massachusetts suburban community in the I-93 and I-495 corridor adjacent to Lowell; Tewksbury is best known as the home of the Tewksbury State Hospital (one of the largest state psychiatric institutions in Massachusetts history — now the Tewksbury Hospital campus) and as a bedroom suburban community for Lowell, Boston, and the I-495 technology corridor), a diverse Middlesex County community with a primarily working-class and middle-class suburban family population, home of significant industrial and commercial development along the I-93 corridor, adjacent to Lowell in the Middlesex County Greater Merrimack Valley, and a community that has grown significantly as the northeast Massachusetts suburban belt has expanded — draws its municipal water supply via the MWRA. Water hardness in Tewksbury measures 92 mg/L — classified as moderately soft.
Tewksbury's moderate softness reflects the northeast Massachusetts Middlesex County Merrimack watershed's calcareous-poor crystalline geology. The MWRA distributes Merrimack River supply to the northeast Massachusetts Tewksbury zone with effective treatment, producing the moderately soft 92 mg/L.
With hardness at 92 mg/L, Tewksbury residents enjoy moderately soft water. MWRA consistently delivers water meeting all Massachusetts DEP and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir and groundwater from the Merrimack River watershed via the Massachusetts Water Resources Authority (MWRA) — the Middlesex County northeast Massachusetts Lowell suburban Tewksbury corridor (Precambrian calcareous-poor Merrimack River crystalline — the calcareous-poor northeast Massachusetts MWRA Merrimack watershed supply; MWRA effective treatment); moderately soft supply at 92 mg/L in Middlesex County.