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Drinking water

Water purification, quality and distribution

Every day, the City of Ottawa’s central water supply provides safe drinking water to approximately 900,000 residential, commercial, and industrial customers. Using the Ottawa River as its source, drinking water is treated at two purification plants and subsequently distributed through more than 3,000 kilometres of water mains before arriving at your tap. In rural areas, the City operates six groundwater well systems.

More than 100,000 water quality tests are performed on drinking water samples annually, covering 350 parameters. The results demonstrate that City of Ottawa customers receive high-quality drinking water that meets all federal guidelines and provincial standards.

The City prepares an annual report for each municipal drinking water system, in compliance with the Safe Drinking Water Act.

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Drinking water advisories and planned work

Drinking water quality annual reports and test results

The City prepares an annual report for each municipal drinking water system, in compliance with the Safe Drinking Water Act. 

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Drinking water - Frequently asked questions

Answers to the most commonly asked questions about drinking water. If you have a question that is not addressed, please call 3-1-1. You can also review the City's current seasonal advisories and planned work.

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Find-A-Fountain

Use this map to find City of Ottawa operated water fountains available to the public.