- The Importance of Protecting Groundwater Supplies
- Sources of Groundwater Contamination
- What is a Wellhead Protection Area?
- Phases of the Wellhead Protection Area Program
- How Can You Protect Your Drinking Water?
- For More Information...
The first phase of the program was completed in 1993. The Region of Peel reviewed municipal and domestic well information to better understand the conditions at each wellfield. The Region also conducted a preliminary inventory of potential contaminant sources in the area surrounding each wellfield, identifying any activities or sources of contamination that could threaten the groundwater quality in the area.
Phases Two and Three
Phases two and three of the program were carried out between 1993 and 1996. Using computer modelling, the zone of groundwater contribution to each well was charted, and time-related capture zones were defined. These capture zones represent the location at which it would take a particle of water the specific time to reach the wellhead. This information is very important for planning purposes, as the capture zones show the area that will require protection for each well or wellfield.
For instance, the 5-year capture zone represents an estimated minimum time needed to replace a contaminated municipal well with a new well. The 10-year capture zone represents the time needed to try to remedy any contamination and still allow time to construct a new well, if necessary.