Reverse osmosis is a water purification process that forces water through a semi-permeable membrane with microscopic pores. These pores are small enough to allow water molecules through while blocking dissolved salts, heavy metals, organic compounds, bacteria, and virtually every other contaminant. For homeowners across the Los Angeles Metropolitan Area, CA, RO delivers the highest level of drinking water purity available for residential use.

The membrane at the heart of an RO system has pores measuring just 0.0001 microns. Roughly 500,000 times smaller than a human hair. At that scale, even dissolved chemicals that pass through conventional carbon filters are rejected and flushed away, leaving only pure H2O on the other side. Municipal water in Southern California often contains elevated TDS levels, chloramine disinfectants, and trace pharmaceuticals that standard pitcher filters simply cannot address. A reverse osmosis system eliminates these concerns at the molecular level.

Water₂O's 5-stage reverse osmosis systems go beyond basic RO by including pre-filtration to protect the membrane and post-filtration to remineralize the water for optimal taste and health. The result is water that is not only purified but genuinely delicious. Founded by engineer Zeke Vogel, Water₂O has installed over 500 systems across LA, Ventura, Orange, and Riverside Counties, earning a 4.9-star rating from families who trust us with the water they drink every day.

An RO system pairs perfectly with a whole house filtration system that handles sediment, chlorine, and hardness at the point of entry. Together, they give you filtered water from every tap and purified drinking water at the kitchen sink. If hard water is also a concern, adding a water softener protects your plumbing and appliances while the RO handles what you drink and cook with. Every recommendation starts with our free water test, so you never pay for equipment your water does not need.