FAQs

How often should we be cleaning / inspecting our water tanks
The American Water Works Association currently recommends inspection of drinking water tanks every 3 years.  The frequency of cleaning is dependent on sediment accumulation and the requirements of your state and local regulatory agencies.
Is using divers in my water tanks sanctioned by my state
LEC is in recognized compliance with every state’s regulatory agency and exceeds the national standards.  We are in constant contact with all state agencies and are an on-going resource for local, regional and national regulatory authorities.
Can I keep my plant in operation during the dive
Yes. Diving is an approved method for inspection and cleaning of water storage tanks while they remain on line and in-service.
Can you repair tanks in-service
Most routine maintenance and repairs can be performed while the tank remains in-service. Leak detection and repair, coating and crack repair and plumbing modifications are routinely completed.
What are the benefits of using divers to clean and inspect
Compared to draining operations, in-service work allows for minimal water loss, sustained fire suppression capacity and no interruptions to your normal procedures and system operations.
Does in-service sediment removal create turbidity issues
Absolutely not.  LEC has worked with State and Federal agencies, most notably the American Water Works Association Water Research Foundation (formerly AWWARF), to research the benefits of cleaning water tanks in-service.  In each test, there was no significant turbidity created during the cleaning and inspection processes.  In each case, water quality parameters actually improved upon completion of LEC cleaning the water tank.
Will the divers contaminate my drinking water
No. Our professional Dive Maintenance Technicians are totally encapsulated during the entire process.  At no time do they come in contact with the water column.  In addition, all of the cleaning and testing equipment entering your tank is strictly dedicated to potable use and is thoroughly disinfected in accordance with AWWA standards prior to use.

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