Guys - Please don’t make assumptions. Neither Pootpourri or “chill out music” are considered in scope here. A cursory glance at https://eurospec.eu/wp-content/uploads/2020/02/EuroSpec-Toilets-for-railway-vehicles-v3.0.pdf would of told you this.
Section TOI-0014 provides further clarity.
"The toilet system shall be able to flush the toilet
every 90 seconds."
"The flushing capacity is to be sufficient for normal-use aswell as during peak-use and cause no limitations
on the availability.
This number of flushes is not to be used for calculating capacity for fresh- and waste water tanks.The toilet system shall be able to flush a second time within 30 seconds after the first flush. This sequence shall be able to be repeated after 90 seconds.
The flushing capacity is to be sufficient for normal use aswell as during peak use and cause no limitations on
the availability. This number of flushes is not to be used for calculating capacity for fresh- and waste water tanks