Notice To Control Noxious Weeds - Please read the notice here.

Treasure Valley storage water rights are potentially at stake. Click here to learn about the issue at hand, who is affected, what the status is and how you can help.

Board of Director meetings are typically held on the 7th of each month, unless there is a conflict. They are held at Pioneer's office at 3804 S. Lake Ave. in Caldwell, ID. The next regularly scheduled Board Meetings:  

October 10th, 2023 at 10 a.m.

November 7th, 2023 at 10 a.m.

December 14th, 2023 at 10 a.m. (Tax Deed hearings held at this meeting with appointments).

Board of Corrections meeting is held in September of every year. This year is September 7th, 2023. @ 10:00 a.m.

If you would like to be on the agenda to address the Board, please call the District's Secretary/Treasurer at (208) 459-3617.

District Map

pay your bill online

2023 season

For a map of Pioneer Irrigation District, please click here.


History of Pioneer Irrigation

To learn the history of Pioneer Irrigation District please click here.

Online payments are offline until 9/26/23

Sorry for any issue this may cause. We are updating our online payment site.

If you need to make a payment please mail it in to avoid late fees and penalty's. PO Box 426 Caldwell, Idaho 83606

Thank you

Click here to pay your Pioneer Irrigation bill online!! 

Once the payment processing screen opens, please click the Irrigation Assessments link on the right side and enter the required data  to pay your bill.

Please note there is a convenience fee of 2.95% of the payment amount for credit/debit cards ($2.95 minimum) or $1.95 for electronic checks.  These fees pay for the cost of credit card/EFT processing and do not benefit Pioneer Irrigation District.

We take: Visa, Mastercard, American Express, Discover, Google pay, Apple pay, E-checks, Paypal, Venmo  


Pay-by-phone is available.  You may call  844-743-1628 to pay your bill over the phone (convenience fees noted above do apply). 

We now have available a payment drop box, located at the front door. Accessible when gates are open.

Pioneer Irrigation District is a non-profit irrigation district providing irrigation water to 34,000+ acres of land in parts of Canyon County and Western Ada County, Idaho.  Established in 1901, Pioneer is proud to be a part of the Treasure Valley's rich agricultural history and we are continually looking for the best ways to manage water needs now and into the future for both agricultural and residential irrigation uses.

Important News Updates


The Board of Directors of Pioneer Irrigation District has determined that the 2023 irrigation season will end on October 4, 2023.

All irrigation deliveries on the Phyllis Canal, Highline Canal and Lowline Canal, will be shut off beginning at 5:00 a.m. on October 5th, while allowing canals and laterals to flush until October 7th.

We want to thank everyone for a successful irrigation season. Due to our conservation efforts, we will be successful in retaining some carryover for the upcoming season.

Should you have any questions or comments please contact the Pioneer Irrigation District office or your Ditchrider. 

For more information about the upcoming water season, or what canal system you may receive your water from, please contact the District office at (208) 459-3617. Your ditchrider may be contacted once water is in the system.