Pure Aqua Columbus
Hard Water Gahanna, Franklin County

The problem: 14 gpg hardness destroying appliances

System: Dynamic Series Water SoftenerSource: City water (Columbus Division of Water)

This example illustrates a common water-quality situation we encounter in Central Ohio homes. Individual water conditions and treatment recommendations vary by home.

The problem: 14 gpg hardness destroying appliances

Gahanna homeowners on Columbus city water frequently deal with 12–15 gpg hardness. At that level, scale accumulates inside water heaters, dishwashers, and plumbing over time. Many homeowners assume premature appliance failure and constant scale buildup is just a fact of life — not realizing the water is the cause.

Water heater failed at 7 years (expected lifespan: 12–15 years)
Premature replacement cost: $1,400
White scale on all faucets and showerheads
Replaced 3 showerheads in 5 years
Cloudy film on dishes and glasses after every dishwasher cycle
Bought rinse aid monthly, still unsatisfied
Dry skin and dull hair after showering
Increased lotion and conditioner use
Soap and shampoo wouldn't lather properly
Used 2–3x more product than needed

What the water test found

Water hardness14 gpg (239 mg/L)
ClassificationVery Hard
Ohio average10–12 gpg
National average7–8 gpg
Technical note: Gahanna sits on the Hoover Reservoir watershed. The city draws from Hoover and Big Walnut Creek, both of which pass through Franklin County limestone geology. This consistently produces 12–16 gpg hardness in the eastern Columbus suburbs.

The solution: Dynamic Series whole-house softener

System: Dynamic Series Water SoftenerSized for a 4-person household at 14 gpg. Set to regenerate every 7 days based on actual water usage.

Install time: 4 hoursInstalled in the utility room alongside the existing water heater. Plumbed into the main supply line before the water heater. Drain line routed to the floor drain. Salt tank positioned for easy access.

1
Free water test
Confirmed 14 gpg hardness and 380 mg/L TDS. No iron or bacteria — softener alone was the right call.
2
System sizing
Calculated daily grain load: 4 people × 75 gallons × 14 gpg = 4,200 grains/day. Selected a 48,000-grain capacity unit with 7-day regeneration cycle.
3
Installation
4-hour install. Existing bypass valve made the job clean. No drywall work needed.
4
Post-install test
Confirmed 0 gpg at every tap. Walked the family through salt loading and the regeneration schedule.

Results: 18 months later

Timeframe: 18 months

MetricBeforeAfter
Water hardness at tap14 gpg0 gpg
Dishes after dishwasherWhite film every loadSpot-free, no rinse aid needed
Showerhead cloggingEvery 3–4 monthsNone in 18 months
Soap and shampoo usageNormal amount, poor latherUsed ~40% less product
Skin and hairDry skin, dull hairNoticeably softer within 2 weeks

Cost comparison

System cost
$1,850 installed
Estimated 10-year savings
$4,200

Breakdown: Appliance lifespan extension ($2,100), reduced soap/product use ($800), avoided plumbing repairs ($700), rinse aid elimination ($600)

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