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Slow Sand Filtration

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Training Description

Oregon Drinking Water Services is offering a 6-hour training entitled "Slow Sand Filtration" that will cover topics including an introduction to the slow sand treatment process, optimized performance goals, and recommended practices. This training is designed for operators new to slow sand filtration as well as experienced operators. The training is offered free of charge and participants are eligible to receive up to 6 Contact Hours (0.6 CEUs) for operators certified in Oregon. 

Training Schedule

In-person training runs from 9 AM - 4:30 PM (PST) at various locations when shown in the schedule below. 

Online (i.e., webinar or virtual) trainings are offered at various times when shown in the schedule below. The online training includes 2 parts (Part 1 or Part 2), such that each part provides 3 contact hours. To receive the full 6 Contact Hours, you must attend both Part 1 and Part 2. 

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Slow Sand Filtration Training Schedule
Times (PST)
Link to Join Online Training or
Register for In-Person Training
Link to submit Application for
Contact Hour Training Certificate
June 5, 2024
Part 1
Click here to join the meeting
at the specified date and time
Click here to submit your Application
for Contact Hour Training Certificate
June 6, 2024
Part 2
Click here to join the meeting
the specified date and time
Click here to submit your Application
for Contact Hour Training Certificate

Email for Assistance

Assistance with taking the online or in-person training or with completing your Application for Contact Hour Training Certificate, email or call 971-673-0405. In-person training class size may be limited. 

Training Credit

Upon completion of the training, attendees receive 6 Contact Hours toward continuing education to meet operator certification requirements in Oregon. You will need to complete the Application for Contact Hour Training Certificate and pass a short quiz to receive credit. If approved, you will recieve an email identifying the Contact Hours you have been awarded. Keep this email for your training records, just as you would for a traditional CEU certificate. If not approved, we will contact you to let you know and can work with you to resolve any discrepancies. Remember, for the on-line training you must complete part 1 and part 2 to receive credit for the full 6 Contact Hours. 

Training Materials

Materials used in the Slow Sand Filtration training are provided below.

  • Parts 1 & 2 Slides  PowerPoint (larger files that may take longer to download)
    • Set a:  Introduction  PPSX  or  PPTX
    • Set b:  Design  PPSX  or  PPTX
    • Set c:  Operations PPSX  or  PPTX
    • Set d:  Regulatory requirements  PPSX  or  PPTX

    Design Manuals:

    • Bellamy, W.D., Hendricks, D.W., and Logsdon, G.S. 1985b. Slow sand filtration: influences of selected process variables. J. Am. Water Works Assoc. 77(12) 62-66.
    • Collins, M.R., Unger, M.C..2008. Assessing Escherichia coli removal in the schmutzdecke of slow-rate biofilters. J. Am. Water Works Assoc. 100(12): 60-73.
    • Letterman, R.D., and Cullen, T.R., Jr. 1985. Slow sand filter maintenance: costs and effects on water quality. EPA/600/2-85-056.U.S. Environmental Protection Agency, Cincinnati, Ohio.
    • Logsdon, G.S., Kohne, R., Abel, S., LaBonde, S. 2002. Slow sand filtration for small water systems. J. Environ. Eng. Sci. Vol. 1. 339-348.
    • Pyper, G.R. 1985. Slow sand filter and package treatment plant evaluation: operating costs and removal of bacteria, Giardia, and trihalomethanes. USEPA/600/2-85/052. U.S. Environmental Protection Agency, Cincinnati, Ohio.
    • Slezak, L.A., Sims, R.C. 1984. The application and effectiveness of slow sand filtration in the United States. J. Am. Water Works Assoc. 76(12) 38-43.
    • Tanner, S.A., and Ongerth, J.E. 1990. Evaluation of slow sand filters in northern Idaho. J. Am. Water Works Assoc. 82(12): 51-61.
    • Visscher, J.T. 1990. Slow sand filtration: design, operation, and maintenance. J. Am. Water Works Assoc 82(6): 67-71.