Calculate how long your fresh, gray, and black water tanks will last based on your usage patterns.
Enter Your Tank Details
Fresh Water Tank
Gray Water Tank
Black Water Tank
Daily Usage Estimates
Your Tank Duration Results
Fresh Water Tank
0.9 days
Current: 40.0 gallons
Daily Usage: 46.0 gallons/day
Gray Water Tank
1.1 days
Current: 0.0 gallons
Daily Usage: 31.0 gallons/day
Black Water Tank
2.0 days
Current: 0.0 gallons
Daily Usage: 15.0 gallons/day
Summary
You will need to refill fresh water in approximately 0.9 days.
Water Conservation Tips
- Take shorter showers or use a "navy shower" technique (wet down, turn off water, soap up, rinse off).
- Use a dishpan for washing dishes to reduce water usage.
- Collect cold shower water while waiting for it to warm up.
- Use biodegradable wipes for quick cleaning to reduce gray water.
- Consider using campground facilities when available.
Understanding RV Tank Management
Fresh Water Usage
- Average shower: 2-5 gallons per minute
- Toilet flush: 1-3 gallons per flush
- Dishwashing: 1-3 gallons per session
- Handwashing: 0.5-1 gallon per wash
- Cooking: 1-2 gallons per meal
Gray Water Facts
- Shower water accounts for 60-80% of gray water
- Dishwashing contributes 15-25% to gray water
- Handwashing and other uses: 5-15%
- Gray water tanks fill faster than black water tanks
- Some RVers use gray water for flushing toilets
Black Water Tips
- Use RV-specific toilet paper that dissolves easily
- Add tank treatment to control odors and break down waste
- Keep black tank valve closed until ready to dump
- Flush with plenty of water to prevent clogs
- Dump black tank before gray tank to help clean the hose
