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Clay Water Hardness & Quality Report (2026)

Water Hardness

147mg/L
Hard

8.6 grains per gallon

Source

reservoir

pH Level

8

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

350.9 mg/L

Est. Daily Cost

$0.39

energy & soap waste

Source: USGS Water Quality Portal · Updated 2026

147mg/L as CaCO₃Hard

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

ApplianceIn ClaySoft Water CityEfficiency Loss
Kettle
4.7 yrs
8.5 yrs-45%
Washing Machine
8.2 yrs
12 yrs-32%
Water Heater
9.7 yrs
15 yrs-35%
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Regional Water Comparison

How Clay compares to its nearest neighbours

CityHardnessPFAS (ppt)RiskSource
Clay, New York147 mg/L7.1 ppt🟠 Hardreservoir
Cicero, New York140 mg/L6.8 ppt🟠 Hardreservoir
Syracuse, New York109 mg/L5.4 ppt🟡 Moderately Hardreservoir
Oswego, New York109 mg/L5.4 ppt🟡 Moderately Hardreservoir
Auburn, New York137.5 mg/L6.7 ppt🟠 Hardreservoir

National Benchmark

How Clay compares to the USA average

BenchmarkHardnessAppliance Risk
Clay147 mg/L🟠 Moderate
USA National Avg150 mg/L🟠 Moderate
Badger Top Rated8.5 mg/L🟢 None

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What Makes Clay's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 350.9 mg/LpH: 8

Clay, New York, a town in northern Onondaga County — a rapidly growing north Syracuse suburb, one of the largest towns in New York State by population, centered around the Clay business corridor along Route 31 — draws its municipal water supply from Skaneateles Lake (Onondaga County Water Authority) and local Onondaga County Quaternary aquifer via the Onondaga County Water Authority (OCWA), distributed to Clay through the OCWA north distribution. Water hardness in Clay measures 147 mg/L — classified as moderately hard.

Clay's moderate hardness reflects the Onondaga County calcareous geology. Skaneateles Lake (the OCWA primary source) is one of the Finger Lakes, draining the Onondaga Escarpment area — the Devonian Onondaga Limestone and Silurian Lockport Dolomite (calcareous Silurian–Devonian platform carbonate formations of the Finger Lakes escarpment) contribute moderate calcareous content to the Finger Lakes. The Clay distribution area in north Onondaga County also draws on Quaternary calcareous glacial outwash (the Oneida Lake–Oswego River valley glaciofluvial deposits — calcareous Wisconsin Age till and outwash from the limestone-rich Adirondack and Appalachian drainage). The combined supply produces the moderate 147 mg/L at Clay.

At 147 mg/L, Clay residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. Onondaga County Water Authority consistently delivers water meeting all New York State DOH and EPA Safe Drinking Water Act requirements.

Geology & Source: Groundwater from the Onondaga Lake–Oneida Lake basin Quaternary glaciofluvial and Oswego River alluvial aquifer and Onondaga County Water Authority (OCWA) Skaneateles Lake supply via the Town of Clay Water Department (OCWA) — the north Onondaga County suburban distribution; moderately hard supply at 147 mg/L — reflecting the Onondaga County calcareous glacial and carbonate aquifer system.

Other New York Water Reports

Frequently Asked Questions

Is Clay's water safe to drink?
Yes. Clay's water meets all federal safety standards. The hardness is 147 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 Clay?
At 147 mg/L (Hard), Clay'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 Clay compare to the USA average?
The USA national average is 150 mg/L. Clay at 147 mg/L is 3 mg/L below the national average. The softest major city is Badger at just 8.5 mg/L.
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