Water Treatment Systems
Water softeners, iron filters, and reverse osmosis systems for cleaner water throughout your home.
Hard water and contaminants take a toll on your plumbing, appliances, and skin. We install and service the right system to fix it at the source.

Why Choose Master Plumbing
Softer, Cleaner Water
Removes hardness, iron, and sediment at the source.
Healthier for Your Home
Protects skin, hair, and fixtures from hard water.
Protects Your Appliances
Extends the life of water heaters and plumbing.
Free Water Testing
We test before we recommend a system.
Water softening removes dissolved hardness minerals through ion exchange — the calcium deposits behind soap scum, water spots, and scale that shorten the life of your appliances, water heater, and plumbing.
Reverse osmosis goes a step further, removing up to 99% of contaminants for drinking-quality water — typically installed under the kitchen sink to serve a dedicated tap and the refrigerator.
Signs Your Water Needs Treatment
- Soap scum and water spots on fixtures
- Calcium buildup in your shower and glassware
- Reduced appliance and water heater lifespan
- Rust-colored or metallic-tasting water
- Rotten-egg odor from sulfur or iron
Better Water Starts At the Source.
We'll test your water and recommend the right system — no guesswork.
Request a Free EstimateOur Water Treatment Services
Water Softener Installation
Remove hardness and scale with a properly sized softener system.
Iron & Sulfur Filtration
Filter out iron, sulfur, and other minerals causing odor and staining.
Reverse Osmosis Systems
Remove up to 99% of contaminants for cleaner drinking water.
Under-Sink Filters & Dispensers
Filtered water on tap at your kitchen sink or refrigerator.
Prompt Water Treatment Installation & Repair
Water treatment systems are an important part of your water supply. Call and make an appointment that's convenient for you. We'll show up on time, listen to your needs, analyze your water, make recommendations, and prepare pricing so there are no surprises.
Call now for prompt, friendly service — 507-373-7454.
Why Choose Master Plumbing
- Licensed, bonded, and insured
- Upfront pricing and free estimates
- Serving South Central Minnesota and Northern Iowa since 1995
- 24/7 emergency service
Frequently Asked Questions
Do I need a water softener and a filter?
It depends on your water quality. Softeners address hardness; iron filters and reverse osmosis address other specific issues. We can test your water and recommend what you actually need.
How much maintenance do these systems need?
Softeners need periodic salt refills; filtration systems need occasional media or filter changes. We'll walk you through upkeep for whatever system you choose.



