Determining whether water loss in a pool or other body of water is due to a leak or evaporation involves a few simple tests:
Steps:
- Fill a bucket with pool water to match the pool’s water temperature.
- Place the bucket on a step in the pool, ensuring the top of the bucket is above the waterline.
- Mark the water level inside the bucket and the pool water level outside the bucket.
- Let it sit for 24-48 hours without adding water to the pool or running the pump.
- Compare the water loss in the bucket to the water loss in the pool:
If the pool water level drops more than the water in the bucket, it’s likely a leak.
If both levels drop equally, it’s probably evaporation.
- Monitor Water Loss
Measure how much water is lost over a specific period (e.g., daily).
Typical evaporation rates vary based on climate, temperature, humidity, and wind but generally range from 1/8 to 1/4 inch per day in warm weather.
If the water loss is significantly more than this, it may indicate a leak.
- Check for Visible Signs of a Leak
Look for wet areas or soil erosion around the pool or structure.
Inspect for cracks, loose tiles, or separation in fittings and seals.
Listen for running water sounds near the equipment or plumbing.
- Use Leak Detection Dye
Use specialized leak detection dye near suspected areas (e.g., cracks, fittings).
The dye will be drawn to the leak if there’s an opening.
- Professional Assessment
If the source of water loss is unclear, consult a professional to perform advanced tests, such as pressure testing or electronic leak detection.
By combining these methods, you can confidently determine whether the water loss is due to evaporation or a leak.