It mentions positive tests for n. fowleri genetic material from the splash pad storage tank, from a nearby fire hydrant and from the hose storage bin at the deceased's home. Understand that this is not the same as discovering viable organisms in the water supply.
It would be difficult, though not impossible, for these organisms to survive the water treatment processes, including the final disinfection step. It is possible, if disinfection malfunctioned at the water plant.
If the treatment processes were working properly, one could still expect positive tests for genetic material for a variety of bacteria and viruses, but that would only indicate that they were present in the raw water source, not that they were viable organisms in the water supply.
A child died. It is important to try to discover the source of this tragedy. The people in this community are scared and suspicious of their drinking water. I hope the investigation uncovers the probable cause quickly.
