2017 Rate Increase

Residential Rate Increase
Commercial Rate Increase
Frequently Asked Questions

 Two years ago, 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.  Another 18% increase will be needed in 2018 but it will have to be approved by Nampa City Council and another public hearing will be required.  Future annual increases of 4.5 percent are likely, beginning in 2019, so customers don’t have large increases later on.

Why Three Years of Large 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.

Current funding barely covers operations and basic maintenance costs. An additional $33.4 million will be needed over the next 10 years to fund replacement of old pipes and valves along with improvements to pumps, wells and reservoirs.

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:

2016 Rate Increases

2016 Domestic Water Rate Increase
2016 Irrigation Rate Increase