Water Softeners for Well Water

A water softener for well water must handle hardness plus whatever else the well brings, most often iron, manganese and sediment. Softeners can remove small amounts of dissolved ferrous iron, but higher iron, sulfur smell or bacteria need separate treatment, so test before sizing.

Setting up a well water softener

• Test hardness, iron, manganese, pH and bacteria with a certified lab.
• Sediment filter first: protects the softener valve and resin.
• Iron: many manufacturers allow a softener to handle a few ppm of ferrous iron. Above that, or with oxidized red iron, add an iron filter.
• Sizing: add roughly 4 gpg per ppm of iron to your hardness figure.
• Resin cleaner: periodic iron-removing resin cleaner helps keep capacity.
• Low pH: acidic water may need a neutralizer before the softener.
• UV last, after softening, if you treat for bacteria.

See Whole House Water Filters for Well Water and UV Water Sterilizers, and test with Well Water Test Kits.

FAQs

Can a water softener remove iron from well water?

A softener can remove small amounts of dissolved ferrous iron, often up to a few ppm depending on the manufacturer, through the same ion exchange that removes hardness. Oxidized iron, iron bacteria or higher levels foul the resin, so they need a dedicated iron filter or oxidation system before the softener.

What order should well water treatment go in?

A common order is sediment filter, then iron or sulfur treatment, then pH correction if needed, then the water softener, and UV disinfection last, after the water is clear and soft. Exact order depends on your test results, so follow your system designer's or manufacturer's guidance.

Do I need a special softener for well water?

Not always a special model, but often a different setup: a sediment pre-filter, sizing that includes iron, possibly a fine-mesh resin for iron and a separate iron filter for higher levels. A certified lab test tells you what the softener needs to handle beyond hardness.