worker with flashlight inspects open sewer manhole septic tank maintenance sewage pumping |
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| navigate by keyword : access cesspool checking communication control drainage drawwell equipment flashlight hatch industry inspection maintenance man manhole municipal pipe pipeline piping plumbing pollution reservoir sanitary septic service sewer sewerage specialist sump system well worker working |
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| A worker with a flashlight inspects an open sewer manhole. Septic tank maintenance, sewage pumping. |
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