The Canadian Radiological Monitoring Network – Gross Alpha / Beta in Drinking Water
This dataset provides the results obtained by Health Canada’s Canadian Radiological Monitoring Network (CRMN) for the gross alpha and beta activity concentrations in drinking water, given in units of becquerels per liter (Bq/L). More information about the CRMN network can be found on the Health Canada website (see link below).
Although water quality is a matter of provincial jurisdiction, the CRMN, in collaboration with the city of Ottawa, has been conducting a targeted program to monitor the radiological content of drinking water from two water treatment plants in Ottawa, ON. The Guidelines for Canadian Drinking Water Quality recommend screening levels of 0.5 Bq/L and 1.0 Bq/L for gross alpha and gross beta activity, respectively. The screening levels are set to reflect the most restrictive Maximum Acceptable Concentrations (MACs) for specific radionuclides in drinking water. If the screening levels are not exceeded, compliance with the guidelines can be inferred. The screening levels set out in the Guidelines for Canadian Drinking Water Quality are calculated based on annual averages of radionuclides in drinking water. Short-term exposure to levels above those recommended by these guidelines does not indicate a health risk. The measured gross alpha and gross beta activity concentrations presented here are well below the screening levels set by the Guidelines for Canadian Drinking Water Quality, with only one exception to date. This occurred February 28, 2011, and was attributable to the flushing of lead pipes at the water treatment plant. It resulted in a spike of naturally occurring lead radionuclides that was dealt with immediately by the City of Ottawa.
The map shows the approximate sampling location for each monitoring station. Stations are found within the associated location range.
- Publisher - Current Organization Name: Health Canada
- Licence: Open Government Licence - Canada
Data and Resources
NMS gross alpha/beta activity in drinking water - DataCSVEnglish French dataset CSV
Gross Alpha / Beta in Drinking WaterESRI RESTEnglish web_service ESRI REST
Gross Alpha / Beta in Drinking WaterESRI RESTFrench web_service ESRI REST
Gross Alpha / Beta in Drinking WaterWMSEnglish web_service WMS
Gross Alpha / Beta in Drinking WaterWMSFrench web_service WMS
CRMN - supporting informationHTMLEnglish French guide HTML
Gross Alpha / Beta in Drinking Water - Data DictionaryPDFEnglish guide PDF
Gross Alpha / Beta in Drinking Water - Data DictionaryPDFFrench guide PDF
NMS Gross Alpha/Beta testing in drinking water Graphs with Textual descriptionHTMLEnglish guide HTML
NMS Gross Alpha/Beta testing in drinking water Graphs with Textual descriptionHTMLFrench guide HTML
|The Canadian Radiological Monitoring Network – Gross Alpha / Beta in Drinking Water|
Delivery Point: 775 Brookfield Road
Administrative Area: Ontario
Electronic Mail Address: HC.rpb-brp.SC@canada.ca