**AFTER HOUR EMERGENCIES ONLY: There is someone on call after normal business hours, 365 days per year (208) 468-5860. Please Note: An emergency is any event that causes or threatens to cause damage to property, life or health. We understand your irrigation water is important to you. Please call the number above during normal business hours 8am-5pm Monday-Friday if you are experiencing water outages or low pressure and we will respond to you in a timely manner. 
We take pride in providing excellent customer service to the 30,000 customers in the City of Nampa.
Irrigation Turn off


News (September 19, 2018)



The City of Nampa will shut down irrigation systems Friday, Oct. 5 to coincide with Nampa & Meridian Irrigation District's Oct. 4 shut-off.

Nampa & Meridian is one of three providers for most of Nampa's irrigation water. The Boise-Kuna Irrigation District ends its season Oct. 9th and Pioneer Irrigation will wrap up Oct. 12th.

The Nampa Waterworks Division reminds individuals and companies blowing out sprinkler lines that the city valve should not be turned off. The keyed turnoff is for city emergency use only.

For more information on the irrigation season, irrigation assessment or wise water use please review the attached document or visit our website at

Frequently asked irrigation questions and more information on the irrigation season and assessment.

Irrigation Districts

The majority of Nampa’s irrigation water comes in the canal system from Lucky Peak. The Pioneer Irrigation District and the Nampa Meridian Irrigation District manage most of the canals and ditches in Nampa. In some cases these irrigation districts are solely responsible for the infrastructure leading to a customer’s property.

City of Nampa Pressurized Irrigation

In many subdivisions the City of Nampa Waterworks Division is responsible for the pressurized irrigation pump station, water main line, and curb stop valves.

The service line, which is between the curb stop and the sprinkler head, belongs to the property owner. The City will not repair a customer’s service line.

Over Watering

Water is a valuable resource in our community, for this reason over watering violates City Code.

Nampa City Codes Section 8-1-22 Waste of Irrigation Water

To report over watering send us an email.

Watering Tips

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