Is Lewis Center, OH Tap Water Safe to Drink?
Yes, Lewis Center tap water is safe to drink. No contaminants exceed health guidelines. However, Lewis Center has very hard water at 320 PPM, which will cause scale buildup in plumbing and appliances over time. A water softener is worth considering.
Hardness Scale: Where Lewis Center Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Lewis Center Compares
Lewis Center's water is 132% harder than the national average of 138 PPM. It ranks #14 out of 1000 cities in our database (harder than 99% of US cities we track). Within Ohio, it ranks #4 of 34 cities (46% above the state average of 219 PPM). Among smaller cities, Lewis Center ranks #11 of 288 for hardness. At this hardness level, water heaters run an estimated 59% less efficiently due to scale insulation, and major water-using appliances typically last 4 years less than the national average lifespan.
What Lewis Center's Water Means for Your Home
Hardness: 320 PPM - Treatment Recommended
Lewis Center has some exceptionally hard water. At 320 PPM (18.7 grains per gallon), your tap is loaded with dissolved calcium and magnesium picked up from underground limestone and dolomite formations. Here's the thing: it's perfectly safe to drink. The minerals won't hurt you. But they will hurt your wallet. That adds up. Hard water at 320 PPM increases household costs through scale-coated water heaters that use more energy, extra soap and detergent, and appliances that wear out faster. Most Lewis Center homeowners don't realize it until the plumber shows up. That's 46% harder than the Ohio average.
Contaminants & Safety
Beyond hardness, Lewis Center's water is within EPA guidelines for regulated contaminants. Chlorine sits at 1.2 mg/L — normal for municipal systems, but enough to notice. 2 contaminants exceed EWG's stricter health guidelines, though all are within legal limits. If your water tastes like a pool or your skin feels dry after showers, a whole-house carbon filter is the simplest fix. A shower filter is a quick, affordable starting point that most people notice immediately. Want the full picture? Request your utility's annual Consumer Confidence Report for neighborhood-level data.
How Hard Water Affects Your Home
At 320 PPM, untreated hard water has measurable effects on household costs and appliance life:
- Water heater inefficiency: Scale insulation forces the heater to work harder (DOE estimates up to 22% more energy for heavily scaled units)
- Soap and detergent: Hard water reduces lathering, requiring significantly more product
- Appliance replacement: Water heaters, dishwashers, and washing machines fail 2-4 years earlier due to scale buildup
- Plumbing maintenance: Scale buildup in pipes reduces flow and requires more frequent service
Note: Impact varies by household size, water usage, and local energy costs. A home water test provides the most accurate assessment for your specific situation.
| Contaminant | Detected | Health Guideline | Legal Limit | Status |
|---|---|---|---|---|
| Hardness (as CaCO₃) | 320 PPM | < 60 PPM | No federal limit | ⚠ Very Hard |
| Total Dissolved Solids | 490 PPM | < 300 PPM | 500 PPM | ⚠ Elevated |
| PFAS (total) | Not tested | — | No total limit | N/A |
| Lead | 0.8 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 1.2 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.124 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Recommendations for Lewis Center Homes
Our Top Picks for Lewis Center (320 PPM)
Hard water at 320 PPM causes scale buildup, increased energy use, and premature appliance failure. A softener protects your plumbing and appliances.
Quick Fix for Chlorine: Shower Filter
At 1.2 mg/L chlorine, many Lewis Center residents notice dry skin, brittle hair, and that "pool smell" in the shower. A shower filter installs in 5 minutes, no tools needed.
How to Test Your Water in Lewis Center
With 320 PPM hardness, a quick test strip confirms whether your specific tap matches Lewis Center's average before you invest in a softener. Hardness can vary within the same system.
Free option: Request Delaware County Water's annual Consumer Confidence Report for official city-level data.
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About Lewis Center's Water Supply
Water Utility: Delaware County Water
Water Source: Hoover Reservoir + wells (Groundwater)
Population Served: 27
Hardness: 320 PPM (18.7 grains per gallon)
Lewis Center draws its drinking water from groundwater sources — Hoover Reservoir + wells. Groundwater typically requires less treatment than surface water because the earth acts as a natural filter. The tradeoff: dissolved minerals from underground rock formations, which is why hardness is elevated here. Calcium and magnesium dissolve into the water as it moves through limestone and dolomite. The system serves 27 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request Delaware County Water's Consumer Confidence Report (CCR) or test your own tap.
ZIP Codes Covered by This Report
This water quality data applies to all areas served by Delaware County Water in Lewis Center, OH, including ZIP codes:
43017, 43021, 43035, 43048, 43065, 43074
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Water Softener Sizing for Lewis Center
At 320 PPM (18.7 GPG), here is how to size a softener for your Lewis Center home. Multiply hardness in GPG (18.7) by daily water usage (roughly 50 gallons per person). A family of four uses about 200 gallons/day: 18.7 GPG × 200 gal = 3740 grains/day. Over a 7-day regeneration cycle, that is 26,180 grains - a 32,000-grain softener is the right fit for most Lewis Center households.
Compare Lewis Center to Other Ohio Cities
Frequently Asked Questions About Lewis Center Water
Is Lewis Center tap water safe to drink?
Where does Lewis Center's water come from?
Do I need a water softener in Lewis Center?
Does Lewis Center water damage tankless water heaters?
How much does hard water cost a Lewis Center household per year?
What is the hardness of Lewis Center water in grains per gallon?
What size water softener do I need for Lewis Center?
Salt-based softener or salt-free conditioner for Lewis Center?
Data sources: Lead and copper data from EPA Safe Drinking Water Act LCR reporting. Contaminant data from utility-reported testing results. PFAS data from EPA UCMR5 (2023–2025). Hardness from USGS and municipal reports. Data reflects system-level testing results and may not match your specific tap due to neighborhood plumbing, season, or recent utility changes. For your utility's latest results, request their Consumer Confidence Report (CCR). Our methodology. Last updated: 2026-02-24.
What Lewis Center Homeowners Actually Buy
Common purchases for homes with 320 PPM water.
Affiliate disclosure: we may earn a commission. Selection based on Lewis Center's water data.