×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

testing collected rainwater for e.coli & others

testing collected rainwater for e.coli & others

testing collected rainwater for e.coli & others

(OP)
hi everybody,

I am about to start working on a project involving a RWH system in a rural region of a developing country. I already posted about my concerns with UV on the PVC pipes, but I have a question about sampling the water.

I'm looking to sample for pathogens, and potentially to make sure that the chemical composition of the water is safe to drink. In terms of pathogens, I'm looking for basic coliform/e.coli tests, and these are the two best ones I've come across (in terms of price & simplicity of use)

http://www.carolina.com/product/bacterial+pollutio...

I was also considering petrifilm, but it seems the petrifilm needs an incubator but I was wondering if anybody has used it before and knows if it is really needed. The petrifilm is a better value (from what I can tell, I get 50 tests for about $80, vs. 20 tests for about $60 from Carolina).

RE: testing collected rainwater for e.coli & others

(OP)
but I meant to post about H2S tests - does anybody know if these would be useful or worthwhile in addition to e coli tests?

RE: testing collected rainwater for e.coli & others

Here is a resource for e coli testing:

http://waterinternational.org/?page_id=270

Hydrogen sulfide oxidation by oxygen occurs rapidly in surface waters. There is no possiblity of having hydrogen sulfide in a RWH system. Hydrogen sulfide is more commonly associated with anaerobic well waters.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources