Even with regular maintenance, RV holding tanks can develop issues over time. Knowing what to look for can save you from unpleasant surprises on the road and costly repairs down the line.

1. Persistent Odors

If you’re noticing smells even after dumping and flushing your tanks, there’s likely buildup on the tank walls that a simple rinse won’t remove. Residue accumulates over time and becomes a breeding ground for odor-causing bacteria.

2. Slow Drainage

When your black or gray tank takes noticeably longer to empty at the dump station, it’s a sign of partial blockage. Debris and waste buildup can narrow the drain opening and restrict flow through the valves.

3. Inaccurate Tank Sensors

Are your tank level sensors showing full when you know the tank is empty? Buildup on the sensor probes is one of the most common complaints among RV owners. A thorough cleaning can restore accurate readings.

4. Visible Residue During Flushing

If the water coming out during a tank flush is consistently discolored or contains particles, the interior walls have significant buildup that needs professional attention.

5. It’s Been More Than a Season

As a general rule, holding tanks benefit from a professional deep cleaning at least once per season. If you can’t remember the last time your tanks were serviced, it’s probably overdue.

What You Can Do

Regular maintenance goes a long way, but there’s no substitute for a professional cleaning when these signs appear. Our complete system service addresses all of these issues and gets your tanks back to like-new condition.

5 Signs Your RV Tanks Need Professional Cleaning