Including filter system and high-performance Giardia filter.
Giardia is a tiny parasite that can enter water supplies as hardy cysts, often listed as Giardia intestinalis or Giardia lamblia. Because cysts are invisible and don’t change taste, smell, or appearance, you might not know they’re present until someone gets sick. Many Marathon homeowners — whether on municipal lines or private wells and cisterns — choose added protection where water first enters the house to reduce the risk of cysts reaching taps and appliances.
Water in coastal communities like Marathon can face contamination risks from damaged pipes, storm runoff, or cross-connections, and tropical maritime weather with hurricane exposure can make those events more likely. Even with city treatment, some families prefer an extra barrier for peace of mind—especially in homes with moderate water hardness or older plumbing. A whole-house system gives consistent protection to showers, faucets and appliances throughout the house, which is particularly useful for Keys properties relying on local wells, cisterns, or aging distribution lines.
When homeowners want a single, highly effective whole-house option for Giardia, an absolute cyst-rated membrane filter is the recommended solution. These filters use a true physical barrier with very fine pores to strain out Giardia cysts rather than depending solely on chemicals. Properly sized for your home’s flow, a membrane filter can safeguard multiple fixtures at once across a Marathon property without leaving coverage gaps—a straightforward mechanical defense against cysts reaching your water.
A whole-house absolute membrane filter performs best when installed on the main service line so all incoming water to your Marathon home passes through it. Success relies on choosing the correct micron rating and maintaining the unit so flow and protection remain steady; many Keys homes add a sediment prefilter upstream to reduce clogging and extend membrane life. The membrane stage is the critical barrier for Giardia intestinalis and Giardia lamblia, and Mr. Pure Water can help size and install the system to match your plumbing, flow needs, and local conditions.