Lewis Center Water Hardness & Quality Report (2026)
Water Hardness
8.1 grains per gallon
Source
river
pH Level
7.8
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
251 mg/L
Est. Daily Cost
$0.37
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 Lewis Center, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In Lewis Center | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5 yrs | 8.5 yrs | -41% |
| Washing Machine | 8.4 yrs | 12 yrs | -30% |
| Water Heater | 10 yrs | 15 yrs | -33% |
Regional Water Comparison
How Lewis Center compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lewis Center, Ohio | 139.5 mg/L | 5.4 ppt | 🟠 Hard | river |
| Powell, Ohio | 237 mg/L | 9.3 ppt | 🔴 Very Hard | river |
| Worthington, Ohio | 220 mg/L | 8.6 ppt | 🔴 Very Hard | river |
| Westerville, Ohio | 162.5 mg/L | 6.3 ppt | 🟠 Hard | river |
| Delaware, Ohio | 238.5 mg/L | 9.4 ppt | 🔴 Very Hard | river |
National Benchmark
How Lewis Center compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lewis Center | 139.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Lewis Center's Water Unique?
Local geology and source profile
Lewis Center, Ohio, in Delaware County — a Delaware County unincorporated community adjacent to Powell and Westerville north of Columbus — receives its water from Delaware County Regional Water District or Columbus Water, drawing from the Olentangy River through the central Ohio distribution.
The hard 139.5 mg/L hardness and TDS of 251 mg/L reflect the Delaware County Olentangy River supply's hard dolomitic character — the Silurian Lockport Dolomite and Ordovician Cincinnatian Group are calcareous and dolomitic formations in the central Ohio limestone belt, and the Olentangy River acquires dissolved mineral content from its dolomite-dominated watershed (compare Powell OH: 136/244 in Delaware County comparable; Westerville OH: 142/258 in Delaware County comparable; Lewis Center consistent hard from the same Delaware County Olentangy River Silurian dolomitic supply). The Olentangy watershed — Silurian Lockport Dolomite (highly dolomitic — primary hardness contributor), Ordovician Cincinnatian Group (calcareous — secondary contributor), and Quaternary Olentangy alluvium (calcareous — TDS contributor).
At 139.5 mg/L with TDS 251, Lewis Center's water is hard — scale builds in appliances. Quarterly descaling is appropriate. The PFAS level of 5.4 ppt is moderate — a certified drinking water filter provides added protection. Review the Delaware County Regional Water District's annual report.
Geology & Source: Lewis Center in Delaware County draws from the Delaware County Water on the Olentangy River (Delaware County, central Ohio) — the Olentangy watershed at Delaware County drains Silurian Lockport Dolomite (highly dolomitic) and Ordovician Cincinnatian Group (calcareous) — Ohio Delaware County Olentangy River Silurian dolomitic supply produces hard water at 139.5 mg/L with TDS 251 mg/L.