Milford Water Hardness & Quality Report (2026)
Water Hardness
3.3 grains per gallon
Source
reservoir
pH Level
7.5
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
117.6 mg/L
Est. Daily Cost
$0.15
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 Milford, your appliances are currently losing 8% efficiency due to mineral buildup.
| Appliance | In Milford | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.7 yrs | 8.5 yrs | -9% |
| Washing Machine | 11.5 yrs | 12 yrs | -4% |
| Water Heater | 13.3 yrs | 15 yrs | -11% |
Regional Water Comparison
How Milford compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Milford, Connecticut | 57 mg/L | 8.2 ppt | 🟢 Soft | reservoir |
| City of Milford (balance), Connecticut | 32 mg/L | 6.1 ppt | 🟢 Soft | reservoir |
| Orange, Connecticut | 17.5 mg/L | 4.8 ppt | 🟢 Soft | reservoir |
| Stratford, Connecticut | 57 mg/L | 8.2 ppt | 🟢 Soft | reservoir |
| Shelton, Connecticut | 25 mg/L | 5.4 ppt | 🟢 Soft | reservoir |
National Benchmark
How Milford compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Milford | 57 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Milford's Water Unique?
Local geology and source profile
Milford, Connecticut, in New Haven County on Long Island Sound — a major New Haven County coastal community, the eighth-largest city in Connecticut, known for Silver Sands State Park, the Milford Oyster Festival, and the historic downtown Green — draws its municipal water supply from the Indian River watershed and Housatonic River via the Aquarion Water Company of Connecticut Milford District. Water hardness in Milford measures 57 mg/L — classified as moderately soft.
Milford's moderate softness reflects the Connecticut coastal watershed's Triassic–Jurassic geology. The Indian River watershed above Milford and the west Housatonic Valley drainage in the Milford area drains: the Connecticut Triassic–Jurassic Hartford Basin (Triassic Portland Arkose — calcareous-poor red bed arkosic sandstone with siliceous quartz and feldspar; Jurassic Hampden Basalt — mafic basalt trap rock of the Hartford Basin, calcium-poor); and the New England Crystalline Massif (Milford Complex granite gneiss — Proterozoic–Cambrian calcareous-poor granite of the Connecticut coastal zone). The calcium-poor Triassic sandstone, basalt, and coastal granite produce the moderate 57 mg/L at Milford — characteristic of the Connecticut coastal softness.
With hardness at 57 mg/L, Milford residents enjoy moderately soft water with minimal scale challenges. Aquarion Water Company consistently delivers water meeting all Connecticut DEEP and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir supply from the Housatonic River–Indian River watershed via the Aquarion Water Company of Connecticut Milford District — the New Haven County Connecticut Coast Range (Triassic–Jurassic Hartford Basin Portland Arkose and trap rock basalt) and the Housatonic River Valley watershed; moderately soft supply at 57 mg/L — reflecting the Connecticut coastal watershed's calcium-poor Triassic sandstone terrain.