Water Use Rules in Minnesota (2026)
4 rules on the books across Minnesota, 4 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
Recycled Water Rules
Where purple-pipe recycled water is required for irrigation, dual-plumbing requirements for new construction, and cross-connection-control rules.
St Louis County
Significant RestrictionsSt. Louis County requires an Operating Permit for any graywater recycle or re-use system that falls outside the…
Read full rule →Washington County
Some RestrictionsWashington County treats graywater reuse as a Type III onsite sewage system under Development Code Chapter Four…
Read full rule →Rochester
Few RestrictionsRochester defines reclaimed water as water collected from rooftops, paved surfaces or similar devices, or water reused…
Read full rule →Leak Reporting Duty
Property owner's duty to report and repair water leaks within a set window once notified, plus how utilities issue leak-adjustment credits and impose penalties.