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Ledyard Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.7

neutral = 7.0

Lead

0.002 mg/L

✓ Below action level

TDS

35.1 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · est.

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 Ledyard, your appliances are currently losing 20% efficiency due to mineral buildup.

ApplianceIn LedyardSoft Water CityEfficiency Loss
Kettle
6.8 yrs
8.5 yrs-20%
Washing Machine
9.6 yrs
12 yrs-20%
Water Heater
12 yrs
15 yrs-20%

Regional Water Comparison

How Ledyard compares to its nearest neighbours

CityHardnessPFAS (ppt)RiskSource
Ledyard, Connecticut≈ 120–179 mg/L5.2 ppt🟠 Hardreservoir
Norwich, Connecticut≈ 120–179 mg/L96.6 ppt🟠 Hardreservoir
New London, Connecticut≈ 0–60 mg/L10.5 ppt🟢 Softreservoir
Montville Center, Connecticut≈ 120–179 mg/L8.9 ppt🟠 Hardreservoir
Waterford, Connecticut≈ 120–179 mg/L0 ppt🟠 Hardreservoir

National Benchmark

How Ledyard compares to the USA average

BenchmarkHardnessAppliance Risk
Ledyard≈ 120–179 mg/L🟠 Moderate
USA National Avg151 mg/L🟠 Moderate
Scarsdale Top Rated0.02 mg/L🟢 None

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What Makes Ledyard's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 35.1 mg/LpH: 7.7

The Ledyard WPCA, Gales Ferry System is the primary public water utility serving approximately 2,369 people across parts of Ledyard and nearby areas in New London County, Connecticut. This system draws its supply from groundwater, likely from local wells tapping into the fractured bedrock aquifers that are common throughout the region. While specific treatment plant names are not detailed in the available reports, standard disinfection and basic treatment processes are employed to ensure the water meets EPA standards. The utility's water currently meets all EPA Maximum Contaminant Level Goals (MCLGs), with recent testing confirming compliance for all served residents.

The watershed encompasses local drainage into Long Pond near Ledyard Center in New London County, part of Connecticut's coastal slope hydrology. Underlying geology features Precambrian metamorphic rocks like schist and gneiss, intruded by Paleozoic granites, with overlying Pleistocene glacial deposits influencing recharge. This crystalline bedrock aquifer system imparts a hard character to the groundwater through natural leaching of alkaline earth minerals, resulting in moderately mineralized water with elevated dissolved solids typical of New England fractured rock supplies.

Hard water in this supply leads to moderate scale buildup in household systems, most noticeably affecting water heaters, dishwashers, and washing machines through calcium deposits that reduce efficiency over time. Faucet aerators and showerheads may clog, while laundry may feel stiff without extra rinses. Maintenance tips include regular vinegar descaling of appliances, installing drain screens, and flushing water heaters biannually. A water softener is often recommended for hard supplies to extend appliance life, improve soap efficiency, and prevent spotting on dishes and glassware. Water quality testing shows full compliance with health-based EPA guidelines.

Geology & Source: New England crystalline-rock aquifer system; Precambrian schists and gneisses, Paleozoic granites; mineral dissolution yields hard water

Other Connecticut Water Reports

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Frequently Asked Questions

Is Ledyard's water safe to drink?
Yes. Ledyard's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.
Do I need a water softener in Ledyard?
At ≈ 120–179 mg/L (Hard), Ledyard's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.
How does Ledyard compare to the USA average?
The USA national average is 151 mg/L. Ledyard (≈ 120–179 mg/L) is 1 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Ledyard is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

Water Hardness

Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.

Estimated

pH

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

TDS — Total Dissolved Solids

Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.

Measured

PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances

EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.

Modelled

Lead

Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.

Calculated

Appliance Lifespan

Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.