Nampa Wastewater Division

Nampa, Idaho

Nampa Wastewater Division

Nampa Wastewater Division

WHAT'S NEW

Nampa must make improvements to the City's wastewater treatement and disposal facility in order to meet new federal requirements. To fund these improvements, the sewer rates for all Nampa residents, businesses and industries will be increased beginning this summer.

Look for a fact sheet in your upcoming utility bill to learn more about the rate increase.

Click here for more information.

If you have questions or comments, please call 468-5441 or email wastewater@cityofnampa.us


Nampa's Wastewater Division of Public Works is committed to serving our customers and protecting our environment by operating and maintaining Nampa's sanitary sewer system.

Nampa's Wastewater Division:

  • Operates and maintains the third largest treatment plant in Idaho
  • Operates a water quality lab
  • Maintains sewer lines and collection system
  • Manages a Recreational Vehicle Dump
  • Serves 24,000 residential customers, 3,200 commercial customers and 10 industrial customers

Established in 1847, the Division is the oldest retail wastewater provider in Idaho. The utility is funded by sewer bills and new connection fees, not taxes.

Facts about Nampa's Wastewater Division:

  • Capacity to treat 18 million gallons of wastewater each day
  • Maintains 346 miles of sewer pipes. The pipes range from 6 to 42 inches in diameter
  • Removes 99% of all biological oxygen demand before the wastewater is discharged into Indian Creek
  • Removes and disposes 1,930 tons of biosolids to the Waste Management System SIMCO landfill
  • Perform 4,000 tests for process control each year
  • Sample Indian Creek twice a week to ensure water quality
  • Maintains 5,257 of manholes and 10 lift stations
  • The plant is staffed 20 hours a day, every day of the year