Including filter system and high-performance HPC Bacteria filter.
HPC bacteria are a broad mix of naturally occurring microbes that can show up in household water and plumbing. You may also see the term heterotrophic plate count used — it’s a lab method for estimating general bacterial growth rather than naming a single pathogen. In an Old Town home, elevated HPC readings often coincide with things homeowners notice directly, like musty smells, slimy buildup in fixtures, or faster biofilm formation on showerheads and faucets.
Levels of heterotrophic plate count can increase when water stagnates in pipes, when sediment or organic material is present to feed microbes, or when plumbing allows biofilm to take hold. These conditions can cause changes in taste or odor alongside general bacterial activity. While many heterotrophic bacteria aren’t known to cause disease, higher HPCs are a useful indicator that your home's water system may benefit from attention. A whole-house approach in Old Town treats incoming water and reduces the factors that let regrowth occur throughout your plumbing.
To reduce HPC bacteria across every faucet and shower in the house, a whole-house ultraviolet (UV) disinfection system is commonly the most effective single filter-style option. UV inactivates microorganisms as water flows through a stainless chamber exposed to a UV lamp, delivering real-time treatment without adding chemicals or altering taste. Installed where water enters your Old Town home, a properly sized UV system protects all taps, appliances, and fixtures from heterotrophic plate count concerns.
For UV to perform reliably, the water reaching the unit needs to be clear so UV light can 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 and regular lamp and sleeve maintenance keep the system effective. Mr. Pure Water can assess your Old Town plumbing and recommend a whole-house UV setup tailored to control heterotrophic plate count at the point of entry.