Upcoming rules expand source-protection permit requirements for municipal drinking water systems

Plain-language summary · AI-assisted · not legal advice

Starting in mid-2026, owners of municipal residential drinking water systems in source protection areas will face broader obligations when seeking permit or licence amendments. The changes extend existing source-protection notice requirements to cover municipal drinking water licences (not just drinking water works permits), and add a new trigger: increasing a system's rated capacity where that increase would require remapping of a wellhead protection area or surface water intake protection zone. Permit and licence conditions blocking use of new, altered, or expanded capacity until source protection plan amendments are approved or implemented will also apply to licences, not just permits. A new exemption applies when the source protection authority has provided specified opinions or indications in the accompanying notice. Owners and operators planning expansions or licence amendments should review whether their activities will trigger these requirements once the changes take effect.

Who this affects: municipal residential drinking water system owners · drinking water system operators · municipal water utilities · source protection authorities