Mazarron Country Club is about 3 km from Camposol, so a 5 minute drive. Here is a lovely pool, that slopes in gently but also has a large deep swimaround island. There is a nice snack bar so you can stay by the pool all day and watch the kids play. It doesn't get very busy, as you can see from the pictures below which were taken in July. There is small entry charge - a couple of euros/day which covers sunbeds and umbrellas.

Camposol has a nice communal pool area that can be walked to from most of the villas, although if you want to drive, its easy to park and there are changing facilities/showers etc. There are two pools, one large one and a smaller childrens pool that is nice and shallow. There is also a snack bar serving drinks ice creams and food.