Groundwater is the primary source of water for about three million Ontario residents.
Information on obtaining access to individual well records is provided on the Ministry of the Environment Well Records
The province and its partners (36 Conservation Authorities and 10 communities) operate the Provincial Groundwater Monitoring Network
to collect baseline water level and quality data from some 450 wells across Ontario.
The publication Groundwater studies in Ontario: Mapping a hidden treasure
(PDF) describes and initiative to promote groundwater source protection in Ontario.
The Ministry of Agriculture, Food and Rural Affairs has number of Water Well Publications
for obtaining the best water quality through protection,
construction and maintaining of the wells, and testing and
understanding the water quality aspects.
Well Construction and Maintenance Resource Material
The Ontario Ministry of Environment's Wells
page and the Water Supply Wells- Requirements and Best Management Practices (2009) manual
provides well information for well owners, contractors and technicians.
The information includes the relevant legislation and information
on constructing, maintaining and decommissioning a well.
A Directory of Licensed Well Drillers is maintained by the Ministry of Environment.
Groundwater Related Associations
The Ontario Ground Water Association website provides water well information to the public and the well construction industry.