Tank Cleaning & Disinfection
Chemical cleaning to remove biofilm
To prevent unforeseen repairs and unscheduled emergency downtime, STS offers 
tank inspections and conditional assessments:
Dive inspections
Dry inspections allowing for complete inspection 
Coating remaining life analysis for future planning
Ultrasound testing of tank bottom to measure amount of corrosion on the 
underside of the tank
Foundation integrity evaluation
Steel loss measurement to prevent expected structural failure or leaks
Security and access examination for vulnerable points such as exterior ladders,
roof vents and overflow piping
Testing to ensure proper operation of tank & components such as Liquid Level
Indicators and Sample

Keeping tanks clean will help maintain water quality and decrease operating costs. Removing sediment and the invisible biofilm will decrease disinfectant consumption and elevated TTHM levels. 

STS provides numerous routine maintenance & cleaning services to keep your tanks in peak operating condition:

• Pressure wash to ensure clean tank interior


• Removal of bottom sediment and minerals on tank walls


• Chemical washout to eliminate invisible biofilm build up from tank interior


• Tank disinfection and return to service in compliance with AWWA standards


Tank cleaning and routine service can be included in our Annual Maintenance Program which makes tank upkeep hassle free.

Interior washout of welded steel tank

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CA Lic. #939335  AZ Lic. #269751