Common problems with a whole house water filter include reduced water flow, leaks at the filter housing, and tastes or odors returning sooner than expected. Most issues come from clogged sediment cartridges, worn or mis-seated O‑rings, or a system that isn’t matched to your home’s water quality and pressure. A practical technician check is to bleed trapped air after a cartridge change; that simple step often restores normal pressure. Homeowners we help around the Mill Valley area sometimes notice new symptoms after seasonal changes in the water supply. Peter Levi provides complimentary on-site water testing and installs whole-house and drinking-water systems based on measured results.
Watch for these specific signs:
- Sudden pressure drop at multiple fixtures (clogged prefilter or undersized system)
- Drips at the sump or fittings (flattened O-ring or cross-threaded housing)
- Taste or odor returning early (exhausted carbon or wrong media for the contaminant)
- Sediment getting past the filter (torn cartridge or incorrect micron rating)
If you see active leaking near the main or a sharp pressure loss, shut off water and have the system inspected promptly.
Updated: 2026-09-10
Need help in Mill Valley, CA? Call (415) 454-7771 or book online. “Diego Ramos replaced our water filtration system. He was most knowledgeable, helpful and efficient.” — Peter G.