I was recommended that the next time I test for coliform is to open the petri dish dish and smell it so the next time I go to a well I can compare it with the odors in well water.

I told I didn't buy that advice but he repeated numerous times on line.

I told him that it was best to take samples to certified labs and expect documented results.

My question is: Has anyone heard of such a method?

Andy CWS-II