Including filter system and high-performance HPC Bacteria filter.
HPC bacteria are a diverse group of naturally occurring microbes that can live in water and inside home plumbing. You may also see them called heterotrophic plate count, which refers to a lab method used to estimate overall bacterial growth rather than a single organism. Elevated results don’t identify a specific pathogen but can indicate conditions that let bacteria multiply—often noticed by homeowners as musty smells, slimy deposits, or faster biofilm buildup on faucet aerators and showerheads in Alma residences.
Levels of heterotrophic plate count can climb when water sits stagnant in pipes, when sediment or organic material is present, or when plumbing allows biofilm to form. These changes often coincide with altered tastes or odors and signal that the household water system needs attention. For Alma homeowners, treating water at the point it enters the house with a whole-house system helps address the source water and reduces the conditions that allow regrowth further downstream.
To reduce HPC bacteria throughout an entire home, a whole-house ultraviolet (UV) disinfection system is usually the most effective single filter-style option. UV inactivates microorganisms as water flows through a stainless chamber lit by a UV lamp, providing real-time treatment without adding chemicals or altering water taste. When installed at the main line, this protection covers every tap, shower, and appliance in your Alma home.
For UV to perform reliably, the water entering the unit must be clear enough for the light to penetrate—heavy sediment, iron, or cloudiness can shield microbes. That’s why UV is often paired with prefiltration, while the UV stage remains the primary technology targeting microorganisms like HPC bacteria. Correct sizing for your home’s flow rate plus routine lamp and sleeve maintenance keep the system effective; Mr. Pure Water can help Alma homeowners select and install the right whole-house UV setup to better control heterotrophic plate count at the source.