Including filter system and high-performance HPC Bacteria filter.
HPC bacteria are a wide-ranging group of naturally occurring microbes that can show up in household water and plumbing. You may also see this referred to as heterotrophic plate count, which is actually a lab method used to estimate overall bacterial growth rather than a single organism. High counts don’t identify one specific pathogen, but they can indicate conditions that let bacteria multiply in pipes. In McIntyre homes, homeowners sometimes notice musty smells, slimy deposits, or faster biofilm buildup on faucet screens and showerheads when general bacterial growth is present.
Levels of heterotrophic plate count tend to increase when water sits in plumbing, when sediment or organics are available for microbes to feed on, or when biofilm develops inside pipes. Those same conditions can cause changes in taste or odor, especially if organic matter is present. While many heterotrophic bacteria aren’t considered disease-causing, elevated HPC bacteria can still signal that a home’s water system needs attention. For McIntyre homeowners, taking a whole-house view helps address the water entering the property and reduce the chance of regrowth further downstream in your plumbing.
To reduce HPC bacteria throughout the house, a whole-house ultraviolet (UV) disinfection system is generally the most effective single-filter style option. UV inactivates microorganisms as water flows through a stainless chamber where it’s exposed to a UV lamp, treating water in real time without adding chemicals or changing taste. When installed at the point where water enters a McIntyre home, a UV system helps protect every tap, shower, and appliance from general bacterial activity including heterotrophic plate count concerns.
For UV to work reliably, the water reaching the unit must be clear enough for the light to penetrate — heavy sediment, iron, or cloudiness can shield microbes from exposure. That’s why whole-house UV systems are often paired with prefiltration, while the UV stage remains the main technology targeting microorganisms like HPC bacteria. Proper sizing to your home’s flow rate and routine lamp and sleeve maintenance keep performance steady; Mr. Pure Water can help McIntyre homeowners select and size a whole-house UV system to control heterotrophic plate count at the source.