Since 1978, located north of San Francisco in the town of Petaluma, the PoolMiser organization has been producing the highest quality auto fill devices that utilize advanced float technology to maintain pre-set water levels in swimming pools. PoolMiser’s products can operate in negative edge, fountains, ponds, and in-ground and above-ground pools. PoolMiser water levelers prevent your pool water from dropping below your skimmer which can cause costly damages to your pool's pump. From new construction to existing pools, Poolmiser is the answer to your water leveling needs.