Watts has been a trusted name in water treatment since Founded 1874, based in United States. The brand is particularly known for Industry-standard backflow preventers, pressure relief valves, and water safety products trusted by plumbing professionals. Watts is positioned in the mid-range price tier, making it a solid mid-range option for water treatment.

Watts Water Treatment
Watts water quality solutions including whole-house filtration, under-sink systems, and UV disinfection for residential and commercial water treatment.
Watts Water Treatment Product Lines
Why Choose Watts for Water Treatment?
Watts stands out in the water treatment market because of Industry-standard backflow preventers, pressure relief valves, and water safety products trusted by plumbing professionals. Their products carry 4 industry certifications, including ASSE Listed, UL Listed, CSA Certified, giving homeowners confidence in quality and compliance. Watts backs their water treatment with a Limited warranty varies by product, which shows commitment to long-term reliability. With 3 dedicated product lines — Whole-House Filtration, Under-Sink RO, UV Disinfection — there's a Watts option for virtually every need and budget.
Certifications & Standards
Warranty & Support
Where to Buy Watts Water Treatment
Water Treatment How-To Guides
View All →How to Install a Reverse Osmosis System
Install an under-sink reverse osmosis system for the cleanest drinking water at home -- feed water connection, filter mounting, storage tank, drain saddle, dedicated faucet, and the critical initial flush.
How to Test Your Water Quality
Test your water with DIY strips, reagent kits, or certified lab analysis -- what to test for, how to collect samples, how to read results, and what treatment actually fixes common contaminants.
How to Change Water Filter Cartridges
Swap out sediment, carbon, and specialty cartridges in whole-house and under-sink systems -- the right filters, the right schedule, and the correct order for multi-stage setups.
Common Water Treatment Problems
View All →Bad Taste or Odor in Water
Water that tastes or smells off -- chlorine, rotten eggs, metallic, musty -- has a specific cause for each type. Identifying what it tastes or smells like is the fastest path to the right fix.
Hard Water Buildup
White, chalky deposits on everything -- faucets, shower heads, glass doors, inside pipes and water heaters. Calcium and magnesium restrict flow, kill efficiency, shorten appliance life. About 85% of US homes have hard water.
Low RO System Output
RO system filling slowly, weak trickle, or running out of water? Clogged pre-filters, worn membrane, low feed pressure, or waterlogged tank. Most fixes are filter replacements or pressure adjustments.
Water Treatment Types
View All →Water Treatment Buying Guides
View All →Watts Water Treatment FAQ
Is Watts a good brand for water treatment?
Watts Water Technologies is an American manufacturer of plumbing, flow control, and water quality products headquartered in North Andover, Massachusetts. Founded in 1874, Watts is a global leader in backflow prevention, pressure regulation, water safety, and plumbing accessories for residential, commercial, and industrial applications.
What warranty does Watts offer on water treatment?
Watts offers Limited warranty varies by product.
Where is Watts made?
Watts is based in United States, headquartered in North Andover, Massachusetts.
What price range does Watts water treatment fall into?
Watts is positioned in the mid-range price tier for water treatment. They balance quality and affordability well.
What water treatment product lines does Watts offer?
Watts offers 3 water treatment product lines: Whole-House Filtration, Under-Sink RO, UV Disinfection.
What certifications does Watts have for water treatment?
Watts holds 4 certifications including ASSE Listed, UL Listed, CSA Certified.
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