The dogs were used prior to the flushing of the system...
The dogs were used when she was still considered a missing person, the tanks and system were flushed after her body was found in the tank and hence no longer missing. There's no way we can connect the dogs missing her scent to the system being cleaned after she wass found.
As for the flooding we don't know if it was a break in the line or something as simple as a toilet overflowing. Another point as a I study the water system is the lower levels of the hotel 1-6 could be on a separate water system. Lower floors are quite often on a different system because it doesn't make sense to create a rooftop system to feed the lower floors that can easily be supplied by the city system. With a hotel of that size it would take more than 4 tanks to keep the system supplied...
Still reading up on this when or if I come up with a definitive answer I'll share
Lastly, assuming the noise and subsuquent flooding reported required the system to be flushed why wouldn't they have found the body then and not 2 weeks later. I cannot imagine a complete system flush and cleansing and nobody looked inside an empty tank
The dogs were used when she was still considered a missing person, the tanks and system were flushed after her body was found in the tank and hence no longer missing. There's no way we can connect the dogs missing her scent to the system being cleaned after she wass found.
As for the flooding we don't know if it was a break in the line or something as simple as a toilet overflowing. Another point as a I study the water system is the lower levels of the hotel 1-6 could be on a separate water system. Lower floors are quite often on a different system because it doesn't make sense to create a rooftop system to feed the lower floors that can easily be supplied by the city system. With a hotel of that size it would take more than 4 tanks to keep the system supplied...
Still reading up on this when or if I come up with a definitive answer I'll share
Lastly, assuming the noise and subsuquent flooding reported required the system to be flushed why wouldn't they have found the body then and not 2 weeks later. I cannot imagine a complete system flush and cleansing and nobody looked inside an empty tank