Is there any harm in having mallard ducks your swimming pool?

Mallard ducks swimming in your pool can disrupt its chemical balance and make the water dirty and difficult to treat.

Their feces leave harmful bacteria, causing algal bloom or bacterial imbalances, potentially contaminating the pool with parasites or microorganisms like E. coli and Salmonella.

Their feathers release oils to keep them water-resistant that coat the surface leaving an iridescent oily coat which makes the environment unsanitary for humans due to their excretions and feather oils as their grooming habits spread debris into your water.

Additionally, ducks can leave behind bacteria that could potentially pose health risks and the oil from their feathers may damage pool filters. Additionally, their sharp legs may scratch and create tears on plastic covers in pools.