Depew Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
7.8
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
257.3 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 Depew, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Depew | Soft Water City | Efficiency 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 Depew compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Depew, New York | ≈ 120–179 mg/L | 6 ppt | 🟠 Hard | reservoir |
| Lancaster, New York | ≈ 120–179 mg/L | 3.4 ppt | 🟠 Hard | groundwater |
| Cheektowaga, New York | ≈ 120–179 mg/L | 6.1 ppt | 🟠 Hard | reservoir |
| East Amherst, New York | ≈ 120–179 mg/L | 7.7 ppt | 🟠 Hard | reservoir |
| West Seneca, New York | ≈ 120–179 mg/L | 7.5 ppt | 🟠 Hard | groundwater |
National Benchmark
How Depew compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Depew | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
Bring Scarsdale-quality water to your Depew home
Shop water softeners on Amazon.com →
What Makes Depew's Water Unique?
Local geology and source profile
The Erie County Water Authority (ECWA) supplies water to roughly 335,000 residents across Erie County, drawing from both surface water and groundwater sources within the Erie County watershed. This mixed supply portfolio is treated at regional facilities before distribution. The ECWA consistently publishes annual water quality reports, assuring residents of their compliance with drinking water regulations.
The water's journey begins in the Erie County watershed, which sits atop Paleozoic-era sedimentary bedrock. This bedrock is primarily composed of limestone and dolomite, highly soluble carbonate rocks that readily release minerals like calcium and magnesium into the water. Glacial deposits in western New York also contribute mineral-rich materials, further enhancing the water's hardness. This unique geological setting is why Erie County water is among the hardest in New York State.
Residents of Depew will likely notice the effects of this hard water on their plumbing and appliances. Scale buildup is a common issue in water heaters, kettles, and pipes, potentially shortening their lifespan. You'll also find that soaps and detergents aren't as effective, requiring more product for cleaning. Installing a water softener is a good idea for those looking to combat scale and extend appliance life. Even without a softener, regular descaling with vinegar-based solutions can help manage mineral deposits. Depew's tap water meets EPA safety standards, with no MCL violations reported since 2023. However, the ECWA advises that four contaminants are present above EPA health-based guidelines (MCLGs), and recommends certified water filtration for further purification.
Geology & Source: Paleozoic sedimentary rocks; limestone and dolomite formations contribute high calcium and magnesium, resulting in very hard water
Other New York Water Reports
Report an Issue
Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.
All reports are reviewed by our team. Thank you for supporting data quality!
Frequently Asked Questions
Is Depew's water safe to drink?
Do I need a water softener in Depew?
How does Depew compare to the USA average?
Data Sources & Methodology
Water quality data for Depew is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
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.
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.
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.
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.
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.
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.