East Haven Water Hardness & Quality Report (2026)
Water Hardness
3.2 grains per gallon
Source
reservoir
pH Level
7.4
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
111.8 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 East Haven, your appliances are currently losing 7% efficiency due to mineral buildup.
| Appliance | In East Haven | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.8 yrs | 8.5 yrs | -8% |
| Washing Machine | 11.6 yrs | 12 yrs | -3% |
| Water Heater | 13.4 yrs | 15 yrs | -11% |
Regional Water Comparison
How East Haven compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ East Haven, Connecticut | 55 mg/L | 8 ppt | 🟢 Soft | reservoir |
| Branford, Connecticut | 77.5 mg/L | 10 ppt | 🟡 Moderately Hard | reservoir |
| New Haven, Connecticut | 82 mg/L | 10.4 ppt | 🟡 Moderately Hard | reservoir |
| West Haven, Connecticut | 23 mg/L | 5.3 ppt | 🟢 Soft | reservoir |
| North Branford, Connecticut | 91.5 mg/L | 11.2 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How East Haven compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ East Haven | 55 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes East Haven's Water Unique?
Local geology and source profile
East Haven, Connecticut, in New Haven County — a major south Connecticut coast New Haven suburban community (East Haven is a significant New Haven County town — a south Connecticut community adjacent to New Haven on the Long Island Sound; East Haven is the eastern neighbor of New Haven across the East River; East Haven has a significant Italian-American heritage (one of the most predominantly Italian-American communities in Connecticut — the 'Wooster Square' traditions of New Haven's Italian-American community extend into the East Haven area), a diverse New Haven County community with a primarily Italian-American and working-class suburban population, home of a significant waterfront area along Long Island Sound (East Haven has one of the more accessible Sound shorelines in the New Haven area), adjacent to Branford in the east Connecticut Sound corridor, and a community with a strong civic and ethnic neighborhood character — draws its municipal water supply via the South Central Connecticut Regional Water Authority. Water hardness in East Haven measures 55 mg/L — classified as moderately soft.
East Haven's moderate softness reflects the south Connecticut coastal watershed's calcareous-poor geology. The SCCRWA reservoir system drains the Triassic Hartford Basin arkose (calcareous-poor) and Precambrian Connecticut gneiss (calcareous-poor). SCCRWA treatment produces the moderately soft 55 mg/L.
With hardness at 55 mg/L, East Haven residents enjoy moderately soft water. South Central Connecticut Regional Water Authority consistently delivers water meeting all Connecticut DEEP and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir supply from the Farm River and Mill River watershed via the South Central Connecticut Regional Water Authority (SCCRWA) — the New Haven County south Connecticut coast East Haven corridor (Triassic calcareous-poor Hartford Basin arkose and Precambrian calcareous-poor Connecticut gneiss — the extremely calcareous-poor south Connecticut coastal watershed; SCCRWA excellent treatment); moderately soft supply at 55 mg/L in New Haven County.