Open Every Day, Honest Every Time. Weekend Appointments Available!
Open Every Day, Honest Every Time. Weekend Appointments Available!
At Mainstream, we’ve been helping homeowners protect their plumbing, appliances, and comfort since 2000. Our licensed plumbers install and service water softener systems post falls homeowners can rely on to remove the minerals causing hard water, extending the life of your pipes, fixtures, and water-using appliances. Whether you need a new system, a replacement, or maintenance on your current unit, we provide upfront pricing, honest recommendations, and quality workmanship you can trust. With fully stocked trucks and a reputation built on integrity, we make it easy to enjoy cleaner, softer water in every room of your home. And if an emergency strikes? We have plumbers on-call 24/7—all day, every day.
Hard water can shorten the life of your pipes, fixtures, and appliances—but routine care helps prevent costly damage. With the Mainstream Care Club in Post Falls, you’ll receive three yearly tune-ups: AC, heating, and a full-home plumbing check. During your plumbing inspection, we look for scale buildup, leaks, and early signs of water softener trouble. Membership also gives you no dispatch fees, 10% savings on service, and priority scheduling for water softener repair, maintenance, or installation. It’s the easiest way to keep your water softener system and plumbing protected year-round.
Every water softener repair, service, or installation in Post Falls comes backed by Mainstream’s Home Comfort Guarantee. That means clear, upfront quotes before work begins, licensed and background-checked plumbers you can rely on, and workmanship done right the first time. If something isn’t perfect, we’ll return to make it right. With Mainstream, you can feel confident your water softener system will be serviced with care, integrity, and your complete satisfaction in mind.
Spokane residents have trusted Mainstream as their full-home service provider for over 20 years, taking care of all their maintenance, installation, and repair needs.
We proudly service the following cities and neighborhoods in Spokane & Northern Idaho:
Not seeing your area? Give us a call at 509-237-6483
If you’ve noticed white buildup on your faucets, cloudy dishes, or stiff laundry in your Post Falls home, you’re seeing the effects of our region’s hard water. Most of Kootenai County — including Post Falls — has high mineral content in the water supply, especially calcium and magnesium. Over time, that hardness doesn’t just leave spots; it clogs pipes, wears down appliances, and shortens the lifespan of your water heater. Whether you live in a newer development near Greensferry or an older neighborhood near the Spokane River, protecting your plumbing with a reliable water softener system is one of the smartest upgrades you can make.
At Mainstream, we specialize in water softener installation, maintenance, and repair for homes and small businesses throughout Post Falls. Our licensed plumbers help you choose the right system for your household’s water use and budget — from compact single-tank units to high-efficiency dual-tank systems. We also service and replace existing softeners that may be underperforming due to mineral buildup or outdated technology. With our expert care, you’ll enjoy better water quality, cleaner fixtures, and longer-lasting appliances, all while helping your plumbing system run more efficiently year-round.
Clean, soft water means comfort, savings, and protection for your home’s most important systems.
Your comfort is our priority. Explore the many Mainstream services available right here in Post Falls:
From improving water taste to protecting every pipe and appliance in your home, Mainstream helps Post Falls homeowners enjoy the benefits of soft, clean water — backed by trusted local expertise and friendly, reliable service.
