Billings's Water Use Rules: The Rules That Matter

Every city handles water use rules a little differently. In Billings, Montana, there are 3 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Recycled Water Rules

Billings discharges treated wastewater from its plant to the Yellowstone River under a Montana DEQ permit. The city does not operate a purple-pipe recycled water program for residential or landscape reuse.

Key details: Treated discharge: Yellowstone River. Permit type: MPDES. Purple-pipe network: None. Greywater rules: MT plumbing code.

Unpermitted greywater systems can fail Montana plumbing inspection and trigger correction orders. Industrial reuse must comply with state DEQ pretreatment standards.

If you are coming from a city with tighter rules, you will find Billings gives residents more flexibility on recycled water rules.

Leak Reporting Duty

Billings residents should report visible water main breaks, hydrant leaks, and sewer backups to Billings Public Works dispatch immediately, day or night, to limit damage and water loss.

Key details: Dispatch availability: 24 hours. Public side: Main and meter. Private side: Meter to building. Leak adjustment: Available with proof.

There is no penalty for late reporting of leaks, but property owners remain responsible for repairs on the private service line from the meter to the structure.

If you are coming from a city with tighter rules, you will find Billings gives residents more flexibility on leak reporting duty.

Lawn Watering Restrictions

Billings Public Works asks residents to follow voluntary odd-even outdoor watering schedules during summer to manage demand on the Yellowstone River intake and treatment plant capacity.

Key details: Source water: Yellowstone River. Preferred schedule: Odd-even by address. Avoid window: 10 a.m. to 6 p.m.. Restriction trigger: Drought declaration.

Voluntary schedules carry no penalty. If the city declares mandatory restrictions, repeat watering violations can lead to written notices and graduated fines on the water bill.

The Bottom Line

Compared to many U.S. cities, Billings gives residents more room on water use rules. 2 of the 3 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

All of the above reflects Billings's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.