We chose the 25th of February, which was a Tuesday, to collect our water samples from the selected points. We chose that date as it had not rained for the previous few weeks hence obtaining more accurate results as rainwater would dilute the reservoir water, affecting the results obtained.
During the collection of water, we lost our results for collection point 2 and we decided to go on another day to collect the results again.
On the 1st of March, a Saturday, we decide to go to the reservoir again to collect water samples. It still had not rained between the time now and when we last went to collect water making it a suitable date to collect water samples.