Water Filtration in Durham Region
Refreshing, clean water without the chlorine taste and odour. We test your water, recommend the right system, install it and maintain it, with financing and rentals available.
Water filtration removes the contaminants, tastes and odours that can come through the tap, including chlorine and chloramine, sediment and, depending on the system, arsenic, aluminum, fluoride and disinfection by-products. Hayes Plumbing sells, installs and repairs top water treatment products for homes and businesses, performs water testing to match the system to your water, and offers financing and rentals.
“The men came to fix our clogged kitchen sink and they were very good.They worked efficiently and were friendly. I would have them again .They were reasonable and I would recommend them.”
We test what is actually in your water before recommending anything.
Whole-home, under-sink or both, sized for your household and your water, with the price in writing.
Registered plumbing technicians install the system to code and show you how it works.
Cartridge replacement schedules and repairs keep the system performing.
Call to book a visit or a free in-home estimate.
Registered plumbing technicians, WSIB certified, BBB accredited and members of the Greater Oshawa Chamber of Commerce.
Free in-home estimates and the price in writing before any work starts.
Founded in Oshawa by Brian Hayes in 1961, with seven fully stocked service vehicles across Durham Region.
A real person answers emergency calls around the clock and dispatches from Oshawa.
According to our 2026 Oshawa plumbing cost guide, water filtration runs about $300 to $800 for an under-sink system and $1,000 to $3,000 for a whole-house system. An under-sink reverse osmosis system runs $500 to $800, and more when the installation is complex or the sink layout makes it harder. Our whole-home chlorine reduction system, with a cartridge effective for up to 40,000 gallons, can be supplied and installed from $929 plus HST. Water testing tells us which system fits, and we confirm the price in writing before we start. Financing and rentals are available.
We are your plumber in Oshawa, and we dispatch from our shop at 448 Ritson Rd. South to:
Common questions about water filtration in Oshawa and Durham Region.
Municipal water is treated, but chlorine and chloramine taste and odour, disinfection by-products and sediment still reach the tap, and you are exposed when you cook, shower and bathe, not just when you drink. A filtration system also removes the need for bottled water.
A whole-home system treats every tap and shower, which addresses chlorine odour and dry skin. An under-sink or reverse osmosis system gives you the highest quality drinking water at one tap. Many households choose both.
Yes. Water testing tells us what is in your water so we can recommend the products that meet your needs rather than guessing.
About $300 to $800 under-sink, $500 to $800 for under-sink reverse osmosis (more for a complex install or sink layout) and $1,000 to $3,000 whole-home per our 2026 cost guide, with our whole-home chlorine reduction system starting at $929 plus HST.
Yes. Hayes Plumbing makes financing and rental of water treatment products available to clients.
Local rules, programs and figures on this page come from these sources.
What certified reverse osmosis systems are tested to reduce, how RO compares with carbon filters and softeners, and what the Region of Durham's 2025 water report says about chlorine, fluoride, sodium, lead and hardness.
The parts of an under-sink RO setup, tank versus tankless units, the Ontario drain rule, and what installation, upkeep and cost look like with Hayes Plumbing.
Whole-house RO treats every tap, but it brings reject water, a storage tank and pump, pre-treatment and corrosive water to manage. When a Durham well can justify one, and what most homes use instead.
Call (905) 576-3043 for friendly service from Oshawa's plumbers since 1961.
