Owning a pool is great — until something goes wrong. From murky water to mysterious leaks, pool problems have a way of showing up at the worst possible time. The good news? Most issues are fixable, often without calling a professional. Here’s a breakdown of the most common pool problems and exactly what to do about them.
1. Cloudy or Murky Water
Cloudy water is usually caused by poor filtration, low chlorine levels, or imbalanced pH. Start by testing your water chemistry and adjusting accordingly. Run your filter longer and consider adding a pool clarifier to help particles clump together for easier removal.
2. Green Algae
Green algae turns your pool into something that looks more like a swamp. Shock the pool with a high dose of chlorine, brush the walls and floor vigorously, and run the filter continuously until the water clears. Follow up with an algaecide to prevent regrowth.
3. Foamy Water
Foam typically appears when there’s too much algaecide, body lotions, or other organic matter in the water. Shock the pool, balance your chemicals, and consider partially draining and refilling to dilute the issue.
4. Pool Water Smells Like Chlorine
Ironically, a strong chlorine smell usually means there’s not enough chlorine — not too much. The odor comes from chloramines, which form when chlorine bonds with contaminants. Shock the pool to break up those chloramines and restore effective sanitization.
5. Low Water Pressure
Weak water flow from your return jets points to a clogged or dirty filter. Clean or backwash your filter, check for any blockages in the pump basket, and inspect the skimmer for debris buildup.
6. Pool Is Losing Water
Some water loss from evaporation is normal, but if your pool is dropping more than expected, you may have a leak. Perform the bucket test — place a bucket of water on the step, mark both levels, and compare after 24 hours. If the pool loses more water than the bucket, you’ve got a leak worth investigating.
7. Stained Pool Surfaces
Stains are usually caused by metals like copper or iron in the water, or by organic debris sitting on the surface too long. Use a stain remover product suited to your pool type and address the root cause — often the source water or decaying leaves.
8. Clogged or Slow Skimmer
A clogged skimmer reduces circulation and strains your pump. Clean the skimmer basket regularly, and make sure the water level isn’t too low, as this can cause the skimmer to suck in air instead of water.
9. Pump Running Loudly
Unusual noise from your pump could signal cavitation (not enough water flow), a clogged impeller, or worn bearings. Check that the water level is adequate, clean the pump basket, and inspect for any debris blocking the impeller. If bearings are the culprit, replacement may be necessary.
10. pH Keeps Drifting
If your pH won’t stay balanced, check your total alkalinity first — it acts as a buffer for pH. Low alkalinity causes pH to fluctuate wildly. Adjust alkalinity to the recommended range, then fine-tune your pH from there.
Stay Ahead of Pool Problems
Most pool issues come down to one thing: neglected maintenance. Regular testing, consistent chemical balancing, and routine cleaning can prevent the majority of these problems before they start. The more you stay on top of the basics, the less time you’ll spend troubleshooting — and the more time you’ll spend actually enjoying your pool.