Background: Water quality in on-reserve Indigenous communities in Ontario is concerning, with issues ranging from deteriorating water quality to issues with regulation and support. As a result, many communities are placed under a Drinking Water Advisory (DWA), which, at its most severe, indicates water is not safe for use or consumption. Between 2004 and 2013, approximately 70% of all on-reserve communities in Ontario were under at least one DWA. While designed to protect physical health, DWAs have widespread impacts on health and wellbeing. However, little is known about First Nation individuals’ thoughts, feelings, and experiences living under a DWA. Purpose: To unpack and explore the broad impacts of a Boil Water Advisory (BWA) from the perspective of community members on a reserve in Northern Ontario and provide considerations for current and future BWA management. Methods: Methodological choices were driven by the principles of community-based participatory research. Questionnaires and interviews were used to collect data. Two hundred and twenty-six questionnaires were distributed. Fifteen Elders and 22 key informants (KIs) were contacted for an interview. Results: Forty-four (19.5%) individuals completed a questionnaire. Eight Elders and 16 KIs participated in 20 interviews. Questionnaire sections were used to frame the data analysis, which fell under five major themes: 1) Community Context; 2) Knowledge of BWAs; 3) Living Under a BWA; 4) Water and Health; and, 5) Pathways Forward. Conclusions: Responses illuminated gaps where education surrounding best practices for protecting health would be crucial moving forward. They also highlighted that women are an important target audience for education. Points also emerged where communication with community members and stakeholders would be key to understanding the impacts and outcomes of DWAs. Additionally, this community, and others experiencing a DWA, should consider greater involvement in water management by younger individuals, to ensure that all perspectives are adequately represented. / Thesis / Master of Public Health (MPH) / When water is known, or suspected, to be unsafe for human consumption, communities are placed under a Drinking Water Advisory (DWA). Indigenous communities have some of the worst water quality in Canada and many are subsequently under DWAs. Despite the widespread impact of DWAs on health and wellbeing, little is known about First Nation individuals’ thoughts, feelings, and experiences living under one. The goal of this thesis was to unpack and explore the broad health, social, cultural, and economic impacts of a Boil Water Advisory (BWA) from the perspective of community members on a reserve in Northern Ontario and provide considerations for BWA management. Responses pointed to gaps where education surrounding how to best protect health would be crucial, especially for women who were highlighted as an important target audience. Points also emerged where communication would be key to understanding the impacts and outcomes of DWAs moving forward.