Course Overview

The need for disinfection of drinking water is introduced along with the regulatory requirements followed by a brief examination of water borne diseases. Water quality parameters and their significance in disinfection and re-infection are discussed. A major part of the course is devoted to the method of chlorine disinfection including system design, performance, monitoring, control, de-chlorination and chloramination. The advantages and limitations of different methods of disinfection including ozone and UV are considered.

Note: The content of this course relates to aspects of both drinking water and wastewater treatment and there is inevitably some overlap with material contained within both the Municipal Wastewater Treatment and the Potable Water Treatment courses.

Course Details

  • 16th October 2023
  • 5 weeks ( 2 – 3 hours per week )
  • £250 + VAT = £300.00

Topics covered in this course:

An Introduction to Disinfection of Drinking Water and Wastewater
Water Borne Disease; Disinfection Processes
Regulatory & Related Requirements

Key Learning Outcomes

By the end of this course you will have obtained knowledge of:

  • Water & wastewater disinfection – the Ct concept for chemical disinfection processes, Water Safety Plans, and chemical disinfection byproducts including trihalomethanes (THMs)
  • Physical disinfection processes including UV and membrane technology (microfiltration, ultrafiltration, and reverse osmosis)
  • Disinfection equipment including commercial systems
  • Operation, monitoring, verification and maintenance of disinfection systems.

Course Delivery & Duration

Delivered via the CIWEM Learning Platform, the course is self paced e-learning with tutor support available on the course discussion forum throughout. Study at your own pace and access support when you require it. There are two live Q&A sessions incorporated into the course.

This module has a learning time equivalent to 2 – 3 hours per week for 5 weeks. You will have ten weeks to complete the course including approximately five weeks to read through course content and five more weeks to complete their final assignment. In total you will have four months access to the Online Course portal. Please note this is a guideline and learning times will vary person to person.

Contact Us

If you have any questions please email our team at or call 020 7831 3110.

Latest News and Events


Government's nutrient neutrality defeat is a win for nature

Lords defeated government’s housing and nutrients plan last week. Here’s why it’s a win for nature markets and more sustainable development

Find out more

Out now: The Environment, October 2023

The Environment magazine October issue focuses on water – what pollutes it, why that matters and how we tackle it.

Find out more


Whether you are studying, actively looking to progress your career, or already extensively experienced, our membership will add value and recognition to your achievements.

Read more


We organise a wide portfolio of UK and international thought leading events, providing an industry recognised forum for debate, Continuing Professional Development (CPD) and sector networking.

Read more


Our market-leading technical excellence training modules are delivered via online and classroom-based courses.

Read more