Mr. Speaker, insofar as Indigenous Services Canada, or ISC, is concerned, the response is as follows.
Through historic investments since 2016, the Government of Canada has made over $5.6 billion in commitments to first nations to upgrade water and waste-water infrastructure on reserve, to better support the operation and maintenance of systems, to improve the monitoring and testing of community drinking water and to support ongoing efforts to eliminate and prevent drinking water advisories.
With regard to parts (a) and (b), disclosing the data broken down by first nation reserve would require the consent of all implicated parties, per the Access to Information Act and ownership, control, access and possession, or OCAP, principles. Disclosure would require third party consultation with 600-plus first nations, which is not feasible within the given time frame.
Of a total of 118,848 homes on reserve, 71% are connected to a piped community water system, 15% are served through a truck-to-cistern system and 13% have individual systems such as a well or lake intake. The remainder are served via other sources or have no water access.
Residents of homes with no water service may have access to clean drinking water through bottle-filling stations, watering points and the provision of bottled water. ISC does not collect data on whether these homes are occupied year round or only seasonally.