We do fecal coliform tests twice weekly where I work and it is imperative that the test be performed within 2 hours of taking a sample in a sterile bottle or it is an invalid result. I would not consider the results valid. Montego Bay Wastewater treatment plant is supposed to get samples at the Negril wastewater plant effluent once a week and test. Those are the results I would really be interested in studying.
Regards,
Bob