Well Wise Testing

Test Your Well Water!

If you don't test your water, how do you know what is in it?

Well Wise is a program administered by the Ontario Ground Water Association to provide water testing for consumers and well contractors. 

To order a water test, call OGWA at 519-245-7194 or below is a Well Wise order form, then print, complete and email admin@ogwa.ca or fax us the order form to 519-245-7196:

                                   Well Wise Order Form - Print & Send

Well Wise Order Form - Fillable PDF

To download, right click on the link and choose "Save as" or download per browser type

(Approx. 2-3 weeks for written test results once shipped to laboratory)


 Test your Well Water by Mary Jane Conboy  
Why test your well water?
 Test your Well Water
by Mary Jane Conboy, Executive Director Well Wise Resource Centre
 What should I test for?

The Safe Drinking Water Act, 2002 (SDWA) requires that testing of drinking water be performed by approved and licenced laboratories. All Well Wise drinking water tests are carried out by Paracel Laboratories Ltd., a laboratory approved under this Act by the Ontario Ministry of the Environment.

Well Wise water testing is carried out by Paracel Laboratories Ltd., a member of OGWA.

A survey conducted in 1991/92 of 1200 rural wells in Ontario found:

  • 14% high for nitrate
  • 34% high for bacteria
  • 6 wells exceeded for pesticides

Samples of Well Wise Test Results:

Example 1 - Well Wise Lab Results

Example 2 - Well Wise - Results as Highlighted in Appendix A of the Ontario Drinking Water Standards (ODWS) Technical Support Document

Check your well water for bacteria contamination at least 3 times per year - spring, summer, and fall. Free testing for E.Coli and Coliform bacteria is available from your local Public Health Unit.

... or for more information on water testing through your Public Health Unit,

Call ServiceOntarioINFOline at:
1-866-532-3161 (Toll-free)
In Toronto, (416) 314-5518
TTY 1-800-387-5559.
In Toronto, TTY 416-327-4282
Hours of operation : 8:30am - 5:00pm

Well Owners: available in PDF only -

Download the guide for well owners. The Well Aware booklet guides you through the life cycle of a well, how to maintain your well, and shows you how your well affects water quality.

© Ontario Ground Water Association
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