AWWA recommends potable water storage systems be inspected at least every three to five years.

Sediment over 1/8" deep on the tank floors cannot be penetrated by chlorine, which increases the potential for bacterial growth. Establishing a regular schedule for inspection and cleaning assures that you have current information on the interior, and exterior, condition of your tanks.
Microbial contamination of water systems,and disease outbreaks, can be caused by the introduction of birds, bats, bees, wasps and other rodents and insects, through tank venting systems. Regular inspection will assure that vent screens and hatch gaskets, are present, attached securely and in good condition, to prevent entry of unwanted animals, leaves, dirt, etc.
Regular inspection and cleaning enables the utility to budget for future repair needs, and avoid "surprises" when overdue repairs are discovered.
Regular inspections enable the utility to maintain required records for EPA oversight and visitation.

Our Divers are all Certified Commercial Divers, and are in

compliance with ADCI, IMCA, AWWA, OSHA and MSHA

Advantages of using commercial diving services:

No down time or loss of fire protection, during cleaning or inspection.
Stops the unecessary loss or waste of water, when cleaning by draining.
No structural stress on water tank or water system during all cleaning/inspection services.
Bottom sediment is easily removed from floor by vacuuming.
Divers can perform a close up inspection of the entire tank interior floors, walls, ceiling, roof structure, overflow, inlet structure, support columns, etc.
Diving provides easy access for inspections, coating/corrosion evaluations and epoxy repairs of hard to reach problem areas.
Epoxy repairs can be completed underwater with a food-grade, NSF approved two-part epoxy product for potable water systems.
Divers can test for leaks, and repairs can be completed more effectively when the tank is full and in-service.
Coating blisters are more obvious when the tank is full rather than when the tank is empty, and the blisters have flattened out.