A dog that swims adds hair, dirt, skin oils and bacteria to the water. None of that is a disaster, but it makes chlorine run out sooner, the filter get dirty faster and chloramines appear earlier.
Sharing the pool with the dog
What changes in the pool
- Hair: ends up in the skimmer baskets, the pump pre-filter and the filter. If it builds up, flow drops and the pump works harder.
- More chlorine used: organic dirt uses up free chlorine and creates combined chlorine, which is what smells "of pool" and stings the eyes.
- Pool finish: claws can scratch liners or polyester pools, especially when trying to climb out over the wall.
How to compensate
- A shower or hose-down before swimming, so it goes in with less dirt and loose hair. A good brush beforehand helps too.
- Empty the baskets and pre-filter more often on the days it swims.
- Test chlorine and pH more often, and combined chlorine if you notice a strong smell: above 0.6 ppm, it's time for a shock treatment.
- Watch the filter pressure and backwash when it rises.
- Teach it the way out: make sure it knows how to use the steps or a ramp. A dog that can't find a way out gets exhausted and frightened.
What about community pools?
The rules approved by the community apply. It's common for community rules to ban animals from the pool area, for hygiene and to keep the peace.
Frequently asked questions
Is chlorine bad for dogs?
With chlorine in its normal range (0.5-2.0 ppm), an occasional swim is not usually a problem, but rinse the dog afterwards and don't let it drink the water. If it has sensitive skin or a condition, ask your vet.
Why does it smell more of chlorine since the dog started swimming?
Because organic dirt creates combined chlorine (chloramines), which is what smells. It isn't too much chlorine: a shock treatment is usually needed.
Can hair damage the pump?
If it builds up in the pre-filter, it cuts the flow and the pump has to strain. Emptying the basket more often prevents it.