Indoor Hygenics Inc.
Verified Pro
6+ years online4.9
Water Treatment & Softeners in London, ON
Compare 30 water treatment & softeners contractors near you in London and surrounding area with an average rating of 4.8/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 23, 2026
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Water Treatment & Softeners in London, ON
London ON water treatment is essential because the city draws from Lake Huron via the Lake Huron Primary Water Supply System, and while treated water is safe, hard water (8-15 grains/gallon) and seasonal taste/odor issues drive most installs. Many Old North and Old South homes have lead service lines awaiting replacement — point-of-use RO at the kitchen is a smart hedge. Newer Hyde Park and Stoney Creek subdivisions get the same Lake Huron water but newer plumbing. NeedInstall connects you with London water treatment installers familiar with City of London water reports, ON plumbing code (OBC), and lead-mitigation strategies for older homes.
London water treatment installs run $1,400-$5,500 for softener + carbon, $4,500-$10,000 for whole-home RO. ON requires a P licence for plumbers. Standard salt-based softeners use 35-50 lbs salt/month at typical hardness. Brine drainage to sanitary sewer required (OBC). Most installs include sediment pre-filter for main line debris. Allow 4-6 hours install standard.
Frequently Asked Questions
- Lead service line concern?
- London is replacing lead service lines block-by-block. Until replacement, use a NSF 53 lead-rated point-of-use RO or carbon block at kitchen. The City offers a partial-replacement subsidy program — check eligibility.
- Salt or salt-free?
- Salt-based for measurable softening (scale reduction, soap savings). Salt-free conditions water but doesn't truly soften. London's hardness justifies salt-based for most homes.
- Maintenance schedule?
- Salt every 6-10 weeks, sediment filter every 3-6 months, carbon every 9-12 months, RO membranes every 24-36 months. Plan $200-$450/yr in consumables. Many pros offer service contracts.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across London 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.