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Swimming pools and power outages

Swimming pools and spas affected by a long power outage period are often unable to be properly filtered. They must therefore be treated and monitored frequently as they could become an ideal haven for breeding of mosquitoes and other biting insects.

During power outages, the pool should be maintained clear of all leaves and debris that can provide nutrients and harbourage for mosquito larvae.

Controlling mosquitoes

If mosquitoes still begin to breed, a specifically formulated anti-mosquito surface film should be applied as per label instructions.

If the product cannot be sourced, then as a last resort, 1 cup of domestic kerosene should be added to the pool water weekly.

What to do once power is restored

Initial check

After power is restored, swimming pools and spas need to be checked to ensure that there are no snakes, spiders or other pests to pose a threat to users.

Water Quality

After the power is restored, the water is likely to be dirty and green. Algal blooms cause pools and spas to turn green.

Green pools, apart from being an eyesore can also create a health risk to users. Any attempts to clean dirty pools and spas will rapidly clog the filter.

Soil and other solid matter should be sieved and vacuumed to waste and not filtered.

Once the pool has been sufficiently cleaned, the pool filter should be turned back on to circulate and filter the water.

Sufficient (check the label) liquid chlorine (sodium hypochlorite) should be gradually added to the pool to raise the free chlorine concentration to 5mg/L and the pH to 7.2 at least overnight with the filter running.

Once an adequate level of chlorine is reached, the pool can be used again.

The local swimming pool shop should be consulted to assist with any queries.

Salt-water pools

Salt concentration should be readjusted accordingly. The local swimming pool shop should be consulted to assist in this situation.