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Location: DWIS / Logon
DW-L1
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are required.
Please enter your assigned User Name and Password in the fields below and click on Logon to access the system.
User Name:
*
Password:
*
Welcome DWIS V. 2> If you are a Laboratory who has received a User Name and Password please enter it to access your information.
Drinking Water Information System v2.7.0.0
Production Environment
Built on 05/01/2026 Build#89
Screen=LogonScreen
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Copyright information:
Queen's Printer for Ontario, 2004
Last modified: January 05, 2026