
Water Treatment & Softeners in Wilmington, DE
Compare 34 water treatment & softeners contractors near you in Wilmington 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 May 22, 2026
One request, multiple quotes — don't overpay
Verified Pro Installers
Other Businesses in This Area
Primo Water Exchange
~32 years onlinePrimo Water Refill
~32 years onlineAire Serv of Wilmington
5.030+ years onlineA J Dauphin & Son
5.0Aquarius Water and Coffee Service
5.0Done Right Today
5.08+ years onlineAerus Delaware Wilmington
4.9~6 years onlineBenjamin Franklin Plumbing of Wilmington DE
4.926+ years onlineOne Hour Heating & Air Conditioning® of Wilmington De
4.920½+ years onlineSERVPRO of Brandywine / Wilmington
4.929+ years onlineAquatic Services
4.8Brandywine Water Systems
4.818½+ years onlineF.H. Furr Plumbing, Heating, Air Conditioning & Electrical
4.8~26 years onlineHarris Plumbing, Heating, Air & Electrical
4.8~10 years onlineHorizon Services - Air Conditioning, Heating, Plumbing, & Electrical
4.822+ years onlineRoto-Rooter Plumbing & Water Cleanup
4.8~29 years onlineWagner Hardware
4.830+ years onlineHentkowski, Inc.
4.727 years onlineJoseph Frederick & Sons
4.725½+ years onlineMr. Rooter Plumbing of Wilmington
4.630+ years onlineMoyer Indoor Outdoor - Services You Can Count On
4.526½+ years onlineHawkins & Sons Inc (Appliances)
4.426½+ years onlineCulligan Quench - Wilmington
3.9Waterlogic USA
1.419+ years onlineWater Treatment & Softeners in Nearby DE Cities
Other Services in Wilmington
Water Treatment & Softeners in Wilmington, DE
Water treatment and softeners in Wilmington (DE) serves a Delaware market: single-family homes, mid-century homes, apartment complexes, and commercial properties. Typical jobs include whole-home water softeners (DE water has hardness), reverse-osmosis drinking-water systems, and commercial water treatment. Delaware water quality and tax-free DE advantages drive approach.
Residential water softeners in Wilmington run $1,800-$4,500; reverse osmosis $1,200-$3,500. Delaware doesn't require state-level contractor license. Wilmington permits apply. No sales tax on equipment.
Frequently Asked Questions
- Is Wilmington water hard?
- Yes — 8-12 grain hardness common.
- DE tax advantage?
- No sales tax — significant savings on equipment.
- RO for drinking?
- Popular — $1,200-$3,500.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Wilmington 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.

