Wilton 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
71 mg/L
Est. Daily Cost
$0.10
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 Wilton, your appliances are currently losing 5% efficiency due to mineral buildup.
| Appliance | In Wilton | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.3 yrs | 8.5 yrs | -2% |
| Washing Machine | 12.2 yrs | 12 yrs | — |
| Water Heater | 14 yrs | 15 yrs | -7% |
Regional Water Comparison
How Wilton compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Wilton, Connecticut | 39 mg/L | 6.6 ppt | 🟢 Soft | reservoir |
| New Canaan, Connecticut | 80.5 mg/L | 10.2 ppt | 🟡 Moderately Hard | reservoir |
| Norwalk, Connecticut | 98 mg/L | 11.7 ppt | 🟡 Moderately Hard | reservoir |
| Westport, Connecticut | 29 mg/L | 5.8 ppt | 🟢 Soft | reservoir |
| East Norwalk, Connecticut | 57.5 mg/L | 8.3 ppt | 🟢 Soft | reservoir |
National Benchmark
How Wilton compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Wilton | 39 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
Bring Badger-quality water to your Wilton home
Shop water softeners on Amazon.com →
What Makes Wilton's Water Unique?
Local geology and source profile
Wilton, Connecticut, in the Western Connecticut Planning Region — a Fairfield County-area town adjacent to Norwalk and New Canaan in the north Fairfield County gold coast corridor — receives its municipal water from the Wilton Water Division, drawing from the Norwalk River watershed reservoirs (Wilton, Fairfield County) through the Wilton municipal system.
The extremely soft 39 mg/L hardness and very low TDS of 71 mg/L reflect the Western Connecticut Upland's essentially insoluble crystalline bedrock character. The Norwalk River headwaters drain Fairfield County — Precambrian Ratlum Mountain Schist and Monson Gneiss (completely insoluble silicate metamorphic), Devonian Manhattan Formation (insoluble schist), and Pleistocene glacial outwash sand (pure silica). The entirely insoluble crystalline and glacial geology produces the near-distilled soft water characteristic of the western Connecticut Upland.
At 39 mg/L, Wilton'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 6.6 ppt warrants a certified drinking water filter — the Sikorsky Aircraft (Stratford, Fairfield County — AFFF in the Housatonic-Norwalk watershed), the Bridgeport industrial PFAS legacy, and the Fairfield County PFAS complex contribute to Wilton's elevated readings.
Geology & Source: Wilton in the Western Connecticut Planning Region draws from the Wilton Water Division on the Norwalk River watershed reservoirs (Wilton, Fairfield County area) — the Norwalk drains the Western Connecticut Upland (Precambrian Ratlum Mountain Schist, Devonian Manhattan Formation) — Connecticut Western Upland Precambrian crystalline watershed produces extremely soft water at 39 mg/L with very low TDS 71 mg/L in this western Connecticut community.