Rates and Resolutions

Domestic and Irrigation Rates 

RESOLUTION No. 41-2020 Domestic Water Hookup Fees (effective 10.01.2020)
RESOLUTION No. 09-2020 Irrigation Rate Increase (effective 03.01.2020)
RESOLUTION No. 10-2020 Domestic & Irrigation Water Misc. Fees (effective 03.01.2020)
RESOLUTION No. 11-2020 Irrigation Hookup Fee Increase (effective 03.01.2020)
   Oct 2019 Rate Increase Notice  
RESOLUTION No.31-2019 Domestic Water Rates and Fees (effective 10.01.19)
RESOLUTION No. 32-2019 Domestic Water Hookup Fees (effective 10.01.19)
RESOLUTION No. 3-2019 Irrigation Water Rates Increase (effective 03.01.19)
RESOLUTION No. 4-2019 Domestic Water & Irrigation MISC FEES (effective 03.01.19)
RESOLUTION No. 34-2018 Domestic Water Rates and Fees (effective 01.01.19)
RESOLUTION No. 35-2018 Domestic Water Hookup Fees (effective 10.01.18)
RESOLUTION No. 6-2018 Irrigation Rate Increase (effective 03.01.18)
RESOLUTION No. 7-2018 Irrigation Hookup Fee Increase (effective 03.01.18)
RESOLUTION No. 5-2018 Domestic and Irrigation Misc Fees Increase (effective 03.01.18)


Additional Information

Residential Rate Increase
Commercial Rate Increase
Frequently Asked Questions

The city of Nampa domestic water rate will increase for a third consecutive year on Jan. 1, 2018. Here's the timeline:


  • In 2015 the City of Nampa conducted an extensive study to evaluate the cost of domestic water delivery and what needed to be done to maintain the city’s aging water system. Domestic water includes all water consumed in your home or business whether it is for drinking, preparing food, bathing, washing clothes and dishes, brushing teeth or any other household water use
  • After mailings, open houses and a public hearing, the Nampa City Council in January 2016 approved a water rate increase, effective March 1, 2016. At that same time, the City Council indicated it would revisit this issue in 2017 and 2018, because the study recommended similar increases for domestic water rates in the next two years.
  • Nampa City Council approved the 2017 rate increase on January 17, 2017 but to make the increase easier on customers they split the average 18% increase into two average 9% increases, effective March 1, 2017 and January 1, 2018. 
  • Looking ahead, another 18% increase could be recommended, but it would need to be approved by Nampa City Council and another public hearing will be required.  Future annual increases of 4.5 percent are likely, so customers don’t have large increases later on.

Why Several Years of Increases?

These increases were recommended after an extensive water rate study that found serious deficiencies in our water delivery system. Nampa’s aging water system has worked silently for years without significant pipe replacement but now it is time to reinvest. Without reinvestment, we could be headed for a water crisis characterized by unplanned outages, emergency repairs and even higher costs. Emergency repairs can cost 15 times more than planned replacement because they frequently require overtime staff hours, result in property damage, and can occur under newly paved roadways. 
Pre-increase funding barely covers operations and basic maintenance costs. An additional $33.4 million will be needed over the next 10 years. Increases will fund ongoing replacement of nearly 470 miles of domestic pipeline (some of which is over 100 years old), upgrading pumps to bring water from its source to your home, increasing supply and maintaining water quality to ensure clean, safe, drinking water.

Projects to be funded with the rate increase.
Rates are different for residential and commercial properties. Please note that some residential customers live in either non-single family or even commercial or industrial zones -- and those rates are higher. If you have questions about your water bill, call (208) 468-5711 or send an email to: