How to notify drinking water system alterations — and autofill 012-9166 with my-id.ca
Report DWWP alterations without retyping municipal owner details
Owners of municipal drinking water systems repeat corporation legal name, system identification, authorized contacts, and alteration summaries when notifying the Director within 30 days of placing authorized changes into service. This guide is an example of storing them once in my-id.ca.
Official form and source
Start from the official source and always use the current version — form numbers and links can change:
- Service page: Municipal drinking water systems: licensing and permits — ontario.ca
- Form (Central Forms Repository): Director Notification Alterations to a Drinking Water System — 012-9166
What this form is about
Form 012-9166 notifies the Director of drinking water system alterations required by drinking water works permit conditions — confirm submission to MDWLP@ontario.ca on ontario.ca.
Before you start: what to gather
- System owner legal name and address.
- Drinking water system name and DWWP reference.
- Alteration description and in-service date.
- Schedule C authorization if applicable — confirm on ontario.ca.
Confirm the current process on ontario.ca.
How my-id.ca makes it faster
- Save it once. Store your owner name, system address, and contact details in your my-id.ca profile.
- Keep documents ready. Upload supporting documents to my-id.ca Files so you are not searching at form time.
- Autofill the form. Use the my-id.ca Chrome extension on a web form, or fill a PDF from your saved profile inside my-id.ca.
- Review and submit yourself through the official channel.
Why do it in my-id.ca
Related Ontario forms repeat the same personal details. Captured once in my-id.ca — stored in Canada, with AI on its own servers — every form starts mostly complete.
Frequently asked questions
- Where do I email form 012-9166?
- Completed forms are typically emailed to MDWLP@ontario.ca — confirm on ontario.ca.
- How does my-id.ca help?
- It autofills owner name, system address, and contact details.
- Are routine repairs exempt?
- Exempt maintenance does not require director notification — confirm on ontario.ca.
Fill it once. Reuse it everywhere.
Save your information in my-id.ca once, then autofill this form and the next one — web forms with the Chrome extension, PDFs right in the app. Your data is stored in Canada and AI runs on my-id.ca's own servers, never sent to third-party AI providers.