Better Water
Starts Here

Reliable, precise filtration from
trusted water purification experts.

Whole House  Under Sink  Replacement Cartridges

H2O Distributors supplies water filtration systems and replacement parts for homeowners, businesses, and water treatment pros. Shop whole house and under sink filtration, reverse osmosis drinking water systems, UV disinfection, filter cartridges, and the valves, housings, and components that keep systems running. Whether you are treating city water, well water, or high-use commercial water lines, we help you choose the proper setup, confirm compatibility, and replace parts with confidence.

Why Buy from H2O Distributors?

  • Fast shipping on the systems and replacement parts people need most
  • Expert support to help you size a system, confirm fit, and avoid ordering the wrong part
  • Strong compatibility focus, including valves, tanks, cartridges, and UV components that match real-world installs
  • Trusted brands and proven filtration technologies for both residential and commercial applications
  • Straightforward product information, so you can compare options and buy with clarity
Waterfall

What H2O Distributors Sells

H2O Distributors sells whole house filtration systems, under sink filters, reverse osmosis systems, UV sterilizer systems, and replacement cartridges and parts. If you need a cleaner taste, reduced odor, less sediment, or help maintaining a filtration system, you can find complete solutions and the components to keep them performing optimally.

How do you choose between whole-house, under sink, reverse osmosis, and UV systems?

System What You Want (Purpose)
Whole House System Filtered water at every tap, especially for removing sediment and chlorine taste and odor
Under Sink System Improved drinking and cooking water at one location
Reverse Osmosis Advanced drinking water filtration with multiple stages and a dedicated faucet
UV Sterilization Protection from microorganisms, most commonly for well water or situations where disinfection is a priority

What are typical replacement timelines?

Most filter replacements depend on water quality and usage, but common timelines are predictable.

Product How Often It Should Be Replaced
Sediment and Carbon Filters Every 6 to 12 months
Reverse Osmosis Pre- and Post-Filters About once per year (once annually)
RO Membranes Every 2-5 years
UV Lamps Every year (even if light is still on)

FAQ for Our Water Filtration Products

Q: What system should I choose for city water vs well water?
A: City water often needs sediment and carbon filtration for taste and odor. Well water often requires sediment filtration and may also require UV disinfection.

Q: Whole house vs under sink, what is the difference?
A: Whole house filters water at every tap. Under sink filters for drinking and cooking water at one sink.

Q: What does UV purification do, and when do I need it?
A: UV disinfects water by inactivating microorganisms. It is most common when well water is used or when disinfection is needed.

Q: How often do I replace cartridges, RO filters, and UV lamps?
A: Replace filters on a schedule based on usage and water quality. UV lamps are typically replaced yearly.

Q: Will filtration reduce water pressure?
A: It can if the system is undersized or the filter is clogged. Proper sizing and timely replacement help maintain flow.

Dr. Andrew Weil
H2O Distributors is recommended by Dr. Andrew Weil in his book,
8 Weeks to Optimum Health.

Andrew Weil, M.D., is a world-renowned leader & pioneer in the field of integrative medicine, a healing-oriented approach to healthcare that encompasses body, mind, & spirit.

Shop by Water Problem

Get started by choosing your water type and goal, then shop for the system or replacement part that matches your home, business, or job site.

Chlorine Taste and Odor

If your tap water smells like a pool or has a chemical taste, a carbon-based filtration system can help reduce chlorine and improve overall taste and odor. Great for city water and homes that want better water at the kitchen sink or throughout the house.

Shop for Carbon Filters
Carbon Block for Removing Chlorine Taste and Odor
Sediment and Particles

Do you see grit, cloudiness, or buildup in faucets? This can be a sign of sediment, such as sand, silt, or rust. Sediment filtration helps trap particles to protect plumbing, appliances, and downstream filters, while helping maintain cleaner, clearer water.

Shop for Sediment Filter Kits
Sediment Filter Kits
Hard Water Feel and Scale

Does soap not lather well, spots appear on dishes, or is there scale buildup on fixtures? Hard water minerals may be the cause. Water softeners:

  • Help reduce mineral buildup
  • Improve cleaning
  • Support longer appliance life
Shop for a Water Softener
Water Softener for Hard Water and Scale
Microbial Concerns
  • If you rely on well water or want an added layer of protection
  • Helps inactivate microorganisms
  • Commonly paired with sediment filtration to allow the light to work effectively
Shop for UV Sterilizer System
Ultraviolet for Inactivating Bacteria
Clean Drinking Water
  • A dedicated drinking water solution with multi-stage filtration
  • Designed for a high level of purification at one faucet
  • Ideal for improving taste and clarity for drinking, cooking, and ice
Shop for a Reverse Osmosis System
Reverse Osmosis System for the Purest Drinking Water
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Quality product with easy installation.
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They carry the ONLY shower filter that is verified to remove virtually ALL chlorine. It works - absolutely no chlorine smell, even after a heavy rainfall. I've used it for years.

I had my bathroom redone and installed a built-in hand shower at a level accessible from my shower stool. This filter easily fits in the narrow space behind the nipple.

They don't get your order out overnight like Amazon (if that's what you're used to), but I did get it within a reasonable time (1-2 weeks?).

Highly recommend over the filters that SAY they remove chlorine but don't say how much and don't have research behind them.
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H2O Distributors carries good water filters which remove the taste of chlorine from city water, They always ship promptly and offer discounts to existing customers. I couldn't ask for anything more!
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What I needed, when I needed it, for a fair price. Replacement UV bulb for my Viqua.