Clearwells are primarily used for which type of water?

Clearwells are primarily utilized for treated water, specifically as storage basins where water that's been treated at a water treatment facility is held before it is distributed to consumers. The purpose of clearwells is to provide a buffer, ensuring that there is a sufficient supply of treated water that can be readily available for distribution, particularly during peak demand times.

Additionally, clearwells assist in maintaining water quality by allowing for the adequate contact time for disinfection processes to take effect and provide some degree of storage to help manage fluctuations in water demand. The design and operation of clearwells also consider the need to maintain treated water under desirable conditions to prevent any recontamination before it reaches the end users.

The other choices do not align with the primary function of clearwells. Pumps and supplies refer to the infrastructure that moves and distributes water but do not involve storage of treated water. High pH water and untreated well water are generally not stored in clearwells as these waters do not go through the treatment process that clearwells are intended to support.