Opening Your Pool? Here’s What to Do If Your Water Level Is Low
As pool season approaches, homeowners are eager to remove their covers and dive into crystal-clear water. But what if you notice that your pool’s water level is significantly lower than when you closed it? A low water level can be a sign of evaporation, improper winterization, or even a pool leak. Addressing this issue early can prevent costly damage and ensure a smooth start to your swimming season.
Common Reasons Your Pool Water Level Is Low
Several factors could cause your pool water level to drop over the winter months. Here are the most common reasons:
- Evaporation: Cold, dry air during winter can cause some water loss.
- Leaks: Cracks in the pool shell, liner or plumbing issues may lead to slow leaks.
- Poorly Sealed Winter Cover: If your pool cover isn’t properly sealed, water can escape, or be pumped off.
- Backwashing: Some water loss occurs if you backwashed before closing.

How to Check If Your Pool Has a Leak
If your pool lost more than a few inches of water, a leak might be the culprit. Here’s how to check:
- Mark the current water level with tape.
- Fill the pool to its normal operating level.
- Monitor the level over 24 hours—if it drops significantly, you may need professional pool leak repair.
What to Do If Your Pool Water Level Is Too Low
Before filling your pool, make sure there are no underlying issues. Very first thing you should do is take a picture to document the height of the water after opening it. Here’s what you can do:
1. Inspect the Pool Structure
Look for visible cracks, liner damage.
2. Perform a Bucket Test
Fill a bucket with pool water, place it on a step, and compare water loss inside the bucket versus the pool. If the pool loses more, you likely have a leak.
3. Contact a Leak Detection Specialist
If you suspect a leak, contact NJ Pool Patcher for expert electronic leak detection and repair.
Final Steps Before Fully Opening Your Pool
Once your water level is stabilized, follow these steps to open your pool safely:
- Test water chemistry and balance pH, alkalinity, and chlorine.
- Run your filtration system for 24–48 hours.
- Check all pool equipment for leaks or malfunctions.
- Inspect the pool for any new cracks or liner damage.
A low water level when opening your pool isn’t just an inconvenience—it could be an early warning sign of a more serious issue.
Need Help? Call NJ Pool Patcher!
If your pool is losing water faster than normal, don’t wait. Our team specializes in pipe leak locating and complete pool leak detection. We offer guaranteed solutions to keep your pool in top condition.