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The undisturbed sediment at the bottom of a newly drained water tank coats the bottom of the tank in a layer of muck that can be a breeding ground for potential pathogens.
Alt Text: 
The undisturbed sediment at the bottom of a newly drained water tank coats the bottom of the tank in a layer of muck that can be a breeding ground for potential pathogens.
Title Text: 
The undisturbed sediment at the bottom of a newly drained water tank coats the bottom of the tank in a layer of muck that can be a breeding ground for potential pathogens.
Caption: 
The undisturbed sediment at the bottom of a newly drained water tank coats the bottom of the tank in a layer of muck that can be a breeding ground for potential pathogens.
Description: 
The undisturbed sediment at the bottom of a newly drained water tank coats the bottom of the tank in a layer of muck that can be a breeding ground for potential pathogens.
Image Credit: 
Frank G. Runyeon
20191205