Our company uses commercially certified divers to dive into municipal water supplies. Since 1997 our company has cleaned and inspected potable water tanks and towers.
Sediment that collects on the floor of potable water storage tanks is often overlooked. It can go for years, sometimes decades, "Out of Sight and Out of Mind". The USEPA has identified sediment as being a habitat that bacteria, protozoa, and even viruses can use to get a foothold in a water system.
Neglecting the housekeeping of a water storage tank can become a threat to the health of any water system and as a result, can threaten the health of their customers.
Also, see our blog at www.tankdiver.us.