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Classroom Training & Events

Due to health concerns associated with COVID-19 all IRWA classroom trainings in March and April are cancelled. Most of these classes will be offered later in the year. If you need immediate CEUs, you may access our online courses by clicking here

If you have already paid for a class we can refund you or "save" the credit for a future course. If you have questions about payment or registration please call our office at 208-343-7001. Thank you for your understanding and flexibility during these uncertain times.

Idaho Rural Water Association offers training classes for drinking water and wastewater utility operations specialists as well as for other related industry professionals such as utility boards members, elected officials, clerks, and managers.  Unless otherwise specified all classes have been approved or are pending approval for drinking water or wastewater CEUs (Continuing Education Units) by the State of Idaho Bureau of Occupational Licenses (IBOL).

Monday, December 2, 2019

Certification Math Review (EPA Sponsored)

January 29th, 2020 - Lewiston

Event date: 1/29/2020 8:30 AM - 4:30 PM Export event

Do you need a little extra help with math? Do you have an exam coming up? Join Adrianna Hummer from IRWA for math basics and applied problems.

Course Outline:

  • Review of materials and supplies needed for exam

  • How to use the provided formula sheets during your test

  • Math basics – units of measurement, fractions, decimals, percents

  • Common measurements in the wastewater and drinking water industry – volume, area, concentration, flow, pressure

  • Basic dimensional analysis problems – problem solving, strategies, resources and tools

  • Chemical dosing and feed pump calibrations

  • BOD, hydraulic and organic loading rates, weir overflow rate, efficiency percent, sludge volume index, surface loading, solids loading, and more!

  • Take-home practice problems to continue studying

  • Level III and IV problems for those that need them!

Instructor: Adrianna Hummer - IRWA

CEUs Earned: 0.6 DW/WW CEUs

Cost: $120 (EPA Sponsored)

Time: 8:30am - 4:30pm (local time)

Location:  View Map

Police Training Center 

2419 16th Avenue 

Lewiston, ID 83501


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