Originally Posted by Andy CWS
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?
Rather than paraphrasing as the above that looks a lot like a misrepresentation. Here are actual quotes of what was said by both parties.
Originally Posted by Gary Slusser
.... ...... IRB and SRB .... aerobic and anaerobic bacterias ... ....
Coliform bacteria is also a large group of the same types of bacteria and they also can cause odor problems.
Your reply to that: Originally posted by Andy CWS
I have never heard of coliform causing an odor. In fact, I have been told by lab technicians that the only way to determine coliform was through lab tests. Physical maladies may
indicate something is wrong with your water but never heard that coliform can be detected with the nose. What is the odor like?
Then I replied to that with: Originally posted by Gary Slusser
I didn't say you can smell test for Coliform bacteria so yes, you need to do a Coliform test.
The first time you do a Coliform test yourself and find Coliform remove the petri dish lid or the Presence/Absence test container cap and take a whiff. Then the next time you are collecting well water samples, smell the water for the same odor and see if over a few years you can learn how to use an educated guess as to the different odors caused by the different types of bacteria found in well water. Not all Coliform contaminated waters will have an odor. More hands on field experience might help.
BTW, what do you mean what does it smell like, he said "rotten eggs".
Here is a link to the thread these quotes come from. Hopefully a link is allowed.