Research & Monitoring - Groundwater Quality - Netley Grassmere

Results from the 2008 survey of the Netley - Grassmere watershed have been compiled. Due to confidentiality, specific locations of wells that failed to meet the Canadian drinking water quality guidelines for Total Coliforms, E. Coli and/or Nitrates will never be released to the general public. If your well was tested and you have questions about the results you can contact our office and we will provide you with your results only (provided proper identification is given).
The results showed that 1 in 4 wells tested failed to meet one or more of the drinking water quality guidelines for the three parameters tested. This means that consumption of water from approximatley 25% of the rural wells in the Netley - Grassmere watershed is not recommended.
Total number of wells tested: 524
Total number of wells failed: 134
The majority of the failed wells (52%) did not meet guidelines because of Total Coliform counts greater than 0 organisms per 100 ml. Nitrates were the second largest cause of failures at 24%. E. Coli caused 7.5% of the failures.
Because there is a general association between nitrate levels in the groundwater and the thickness of soil above the bedrock, we are able to create a map of areas with increased risk of nitrate contamination in the drinking water. If you live in the area of the map that shows red, you are at a higher risk of having a contaminated well; it is recommended that you test your water for nitrate levels especially if you have young children drinking the water.
This map is not intended to be used in place of well tests. Individual wells may or may not directly correspond to the results shown here. the map is to be used only as a general indicator of possible nitrate concentrations.
High nitrate levels (>10 mg/L - red areas) are of greatest concern to infants as it may cause a condition known as blue-baby syndrome (methemologlobinemia).
If you want to have your water tested you can contact the Office of Drinking Water at (204) 945-5762 or the EICD.