
Water Treatment & Softeners in Ann Arbor, MI
Compare 25 water treatment & softeners contractors near you in Ann Arbor and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 23, 2026
Most pros respond within 2–24 hours
Verified Pro Installers
Other Businesses in This Area
Wellness Water Filtration
2½+ years onlineAtlas Water Solutions
5.0Benjamin Franklin Plumbing of Ann Arbor
5.026+ years onlineFahrenheit Heating And Cooling LLC
5.09+ years onlineAdvanced Water Treatment
4.915 years onlineAmerican Aqua
4.9~27 years onlineBeauchamp Water Treatment Solutions
4.912½+ years onlineCGC Home Services
4.91½+ years onlineReynolds Water Conditioning Co.
4.9~25 years onlineThe Honest Plumbers & Drain Services of Ann Arbor
4.92+ years onlineMrs. Michael Plumbers, Electricians, and HVAC Technicians
4.8~4 years onlineMichigan Power Rodding
4.722+ years onlineCulligan of Ann Arbor/Detroit
4.59½+ years onlineLeafFilter Gutter Protection
4.524½+ years onlineState Soft Water
4.5~19 years onlineAnn Arbor Water Treatment Plant
4.425½+ years onlineHighflow Water Systems
4.316+ years onlineKinetico
3.230+ years onlineWater Treatment & Softeners in Nearby MI Cities
Other Services in Ann Arbor
Water Treatment & Softeners in Ann Arbor, MI
Ann Arbor water-treatment contractors in this directory serve homes on Ann Arbor city water (treated, moderately hard at 8-12 grains) and the surrounding Washtenaw County well-water properties. A whole-home twin-tank water softener runs $1,800-$3,400 installed. Well-water systems with iron filtration, softener, and RO at the kitchen typically land $4,500-$9,500.
Michigan groundwater in Washtenaw County typically carries iron, manganese, and elevated calcium hardness. Michigan EGLE publishes well-testing guidance. Most installers run free in-home tests and recommend lab testing ($120-$200) for private wells.
Frequently Asked Questions
- How hard is Ann Arbor tap water?
- Moderately hard — typically 8-12 grains per gallon (140-200 ppm). A 32,000-48,000 grain softener handles a typical 4-person home.
- Should I test my Washtenaw County well?
- Yes — at minimum annually for total coliform and nitrates, every 2-3 years for iron, manganese, and pH.
- Is RO worth it?
- For most users, yes — Ann Arbor TDS often runs 250-400 ppm. Under-sink RO at $400-$900 installed reduces TDS to 10-30 ppm.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Ann Arbor and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.

