Whole-house softener ยท EcoPure

EcoPure EP31 31,000-Grain Water Softener

31,000-grain softener for up to 2 people at 15 gpg

Updated October 2026

Quick verdict

A sensible whole-house softener for up to 2 people on 15 gpg water.

Strength
31,000-grain rating.
Trade-off
Service flow not stated.
Right buyer
Up to 2 people on 15 gpg water.
Grain capacity (maker)
31,000 grains
Household (maker)
1โ€“4
Material
Plastic
Dimensions (seller)
20.5"L x 15"W x 48"H
Product weight
82 lb
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What it does for your water

The EcoPure EP31 31,000-Grain Water Softener is a whole-house softener rated at 31,000 grains.

Run at an efficient salt setting, its rating gives about 23,200 grains per regeneration rather than the full rating: enough for up to 2 people on 15 grains-per-gallon water regenerating weekly, or 1 on 25 grains per gallon. Size it to your own water.

The listing also gives features listed Programmable; mounting Freestanding; sized by the maker for 1โ€“4; power Manual (Water Pressure); capacity stated as 31.1 gallons; model EP31.

The listing gives dimensions of 20.5 in (L) x 15 in (W) x 48 in (H), a shipping weight of 82 lb and rough plumbing;water purification;water-softeners in the box.

Is it the right unit for your house?

Choose it when

  • Up to 2 people on 15 gpg water
  • Replacing an older softener

Pass on it when

  • More than 1 person on 25 gpg water
  • Iron above about 5 ppm without an iron filter

Where it wins and where it loses

Wins

  • 31,000-grain rating

Loses

  • Service flow not stated
  • Valve not named on the listing
  • Requires a drain line and power
  • Adds sodium to softened water (potassium chloride avoids it)

Limits to know about

  • Figures are the maker's or seller's own; check fit and capacity against your water test and your equipment's manual.

Maker's figures

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Model numberEP31Retailer
Features (seller)ProgrammableRetailer
Dimensions (seller)20.5"L x 15"W x 48"HRetailer
MaterialPlasticRetailer
Mounting / installationFreestandingRetailer
MethodIon ExchangeRetailer
Product weight82 lbRetailer
Model nameEP31Retailer
Grain capacity (maker)31,000 grainsRetailer
Household (maker)1โ€“4Retailer

Units to weigh against it

Other water softeners in the catalog

Every water softeners on one grid

Final verdict

A sensible whole-house softener for up to 2 people on 15 gpg water.

Where to buy

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

How many people is the EcoPure EP31 31,000-Grain Water Softener for?
At an efficient salt setting it delivers about 23,200 grains between regenerations: up to 2 on 15 gpg water, or 1 on 25 gpg, regenerating weekly. Iron adds load: each ppm counts as about 4 gpg.