Why Your Water Filtration System Needs Regular Maintenance

A water filtration system installed and forgotten is not a water filtration system — it's a false sense of security. Every component in a properly designed whole-house system has a service life, and when those lifespans are exceeded, performance degrades in ways that aren't always visible until the problem is significant.

Here's what needs to be maintained, on what schedule, and what happens when it isn't.

Filter Cartridges

Sediment and carbon filter cartridges have a finite capacity. As they accumulate particles and contaminants, differential pressure across the housing increases, flow rate drops, and eventually the cartridge becomes a source of contamination rather than a solution to it. A saturated carbon cartridge can begin to release the contaminants it previously captured.

For most homes in Rosarito on municipal supply with a cistern, cartridge replacement every 6 months is appropriate. Homes on more turbid supply or with higher usage may need changes more frequently.

How do you know when it's time? A pressure gauge installed across the filter housing tells you. We include one in every installation and check it at every service visit.

UV Sterilization

On an older UV system this is the most commonly neglected component, and the most consequential to overlook. Conventional UV lamps don't burn out the way a household bulb does; they gradually lose output, and after roughly a year they may still appear to glow while no longer delivering the dose required for effective sterilization. If that describes the system already in your house, the lamp needs replacing annually regardless of whether it looks lit, and the quartz sleeve around it needs pulling and cleaning.

The UVF50 LED we install has neither. No bulb to replace, no quartz sleeve to clean, mercury-free, and the indicator turns red when the unit stops working properly. There is no annual UV part to buy and no annual job to forget, which is exactly why we changed to it.

RO Membranes and Filters

An under-sink RO system has its own service schedule. Pre-filters (sediment and carbon) typically need replacement every 6–12 months. The RO membrane itself lasts 2–3 years under normal conditions. Post-carbon filters should be replaced annually.

A declining RO membrane shows up as rising TDS in the output water. We check this at every service visit with a calibrated meter. When TDS climbs, it's time to replace the membrane.

What Gets Checked at Every BWS Care Visit

• Differential pressure readings across all filter housings
• UV status check (the UVF50 LED has no bulb or sleeve to service)
• RO output TDS reading vs. baseline
• Leak inspection at all fittings and connections
• Sanitizer flush if needed
• Updated service log with next-due date sticker

The BWS Care Plans

Our BWS Care plans come in four options matched to your system: Whole House Care and RO Care at $20/mo each, Whole House + RO Care at $45/mo, and Total Home Care at $48/mo, which adds the annual softener inspection. You can pay monthly or prepay the year and get one month free. Filter cartridges and RO filter sets are included in the plan, and the UV needs no bulb or sleeve at all, so there are no surprise parts bills at service time, and we handle the scheduling and the install.

The goal is simple: your system should work exactly as well in year three as it did on installation day. That only happens with consistent maintenance.

If you have an existing system — installed by us or anyone else — and you're not sure when it was last serviced, that's the right place to start.