Diploma in Water Treatment at QLS Level 4

Diploma in Water Treatment at QLS Level 4

Gain knowledge of water treatment processes, disinfection, chlorination, waterborne pathogens and treatment plant operations.

4.68

( 4 Reviews )

$222

$375

40% off

This course includes:

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    Lifetime Access*

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    Guided Learning Hours (100)

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    Number of Modules 12

awarding body

12 Modules

Earn a career credential that demonstrates your expertise

Earn a career credential that demonstrates your expertise through structured modules covering the core skills and knowledge for this qualification.

100 Hours

Guided learning hours

Guided learning hours are the recommended time for completing this course, including study materials, assessments, and tutor-supported learning.

Course Overview

The Diploma in Water Treatment at QLS Level 4 is an online course designed to develop in-depth knowledge of water treatment processes, disinfection and wastewater treatment. The course is endorsed by the Quality Licence Scheme (QLS) and its learning outcomes are benchmarked at Level 4 against QLS level descriptors. It is a non-regulated course and is not an Ofqual-regulated qualification.

The Level 4 Diploma in Water Treatment covers essential areas of water treatment, including waterborne pathogens, bacteriological monitoring, chlorination, disinfection rules, chlorination byproducts, sodium hypochlorite, calcium hypochlorite, oxidising agents, water disinfection methods and ozone. Learners also develop knowledge of water treatment works, equipment maintenance, wastewater treatment, and the policies and procedures relevant to water treatment operations.

The Water Treatment Diploma is designed for wastewater personnel, water treatment operators, professionals working in chlorination-related roles, environmental scientists and individuals who want to develop knowledge of water treatment works. The course provides structured learning that helps learners build knowledge of water treatment processes and understand how specific processes are controlled and operated within relevant policies and procedures.

The QLS Level 4 Water Treatment Course provides a focused foundation for further learning in water treatment, environmental studies and related areas. The course also supports learners in developing specialist knowledge relevant to water treatment operations and workplace responsibilities. Successful completion leads to the Diploma in Water Treatment at QLS Level 4, issued under the Quality Licence Scheme. The course provides lifetime online access, allowing you to study flexibly at your own pace.

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Course Highlights

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QLS-endorsed Level 4 non-regulated course

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Online study with lifetime access

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Designed for water treatment professionals and learners

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Assignments with instructor feedback and assessment

What Sets This Course Apart?

Here's why this course stands out — flexible learning, dedicated support, and valuable extras included with your studies.

  • 100% Online & Flexible Learning

    Complete your course online with the freedom to study around your work and personal commitments.

    Extended Course Access Until Course Withdrawal Notice

    Access your course resources for longer until an official withdrawal notice is announced.

    FREE Work Placement Arrangement Support

    Get support finding suitable work placement opportunities to gain practical experience alongside your learning.

    FREE Standard Student Membership

    Enjoy free student membership with access to helpful resources, benefits and learner support services.

    Choose Up to 5 FREE CPD Courses

    Develop your skills further by selecting up to five free CPD courses of your choice.

    Pause and Resume Your Studies for Up to 180 Days

    Pause your learning for up to 180 days and continue when the time is right.

    Access to an AI Study Assistant

    Use our AI Study Assistant to support your learning and provide guidance when required.

    FREE Student ID

    Receive a free student ID to confirm your learner status and access valuable student benefits throughout your studies.

    FREE Access to All Webinars, Including Premium Webinars

    Access all webinars free of charge, including premium sessions designed to support your development.

  • FREE Career Coaching & Career Development Support

    Build your career confidence with free coaching, guidance and professional development support.

Why Study With Global Edulink?

Global Edulink provides flexible online learning with qualified instructors, structured materials and learner support.

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Study at your own pace with flexible online learning

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Enjoy lifetime access to the learning platform

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Study from anywhere with unlimited access

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Learn from materials created by experienced industry instructors

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Repeat and rewind lectures whenever needed

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Access learner support throughout your studies

Learning Outcomes

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Understand waterborne pathogens, chlorination and disinfection processes

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Apply knowledge of water disinfection methods and oxidising agents

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Operate specific water treatment processes within relevant policies and procedures

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Develop skills for maintaining water treatment works and equipment

Who Is This Course For?

  • Water treatment operators seeking to develop their knowledge
  • Wastewater personnel working in water-related environments
  • Professionals working in chlorination-related roles
  • Environmental scientists and learners interested in water treatment

Course Resources

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Self-paced online learning with course materials

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Qualified instructor support

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Narrated e-learning modules and tutorials

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Access to structured course learning content

Entry Requirements

Basic knowledge of Maths, English and ICT

Suitable for learners with an interest in water treatment and related subjects

Need Extra Support?

Our Course Advisers Are Here to Help

Get personalised guidance and ongoing support by reaching out to your course adviser.

Skills Gained

This course develops practical knowledge and skills for working in water treatment environments.

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Understand water treatment processes and procedures

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Develop knowledge of chlorination and disinfection methods

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Understand waterborne pathogens and bacteriological monitoring

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Learn about treatment equipment maintenance and operation

Course Curriculum

12 Modules

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12 Lectures

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100 Guided Learning Hours

QLS

Endorsed by

The Quality Licence Scheme (QLS) provides independent recognition for high-quality, non-regulated courses and training programmes. Through its endorsement process, it reviews course content and quality standards, helping learners and employers identify programmes that have been independently assessed for quality and value. 

QLS

Course Advantages

Learners can gain flexible study and structured learning with a QLS-endorsed course.

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Study flexibly with lifetime online access

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Learn through structured modules and practical assignments

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Gain QLS-endorsed, non-regulated course certification

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Build knowledge relevant to water treatment operations

Need more information

Feeling Uncertain? Looking for Guidance?

Reach out to your course adviser for valuable insights and professional support.

Method of Assessment

The course is assessed through centre-devised, assignment-based assessments designed to evaluate learners’ knowledge and understanding of water treatment processes and practices.


  • Assignment-Based Assessment: Learners complete centre-devised assignments based on the required course content.
  • Knowledge and Understanding: Assignments assess knowledge of water treatment processes, chlorination, disinfection, waterborne pathogens, bacteriological monitoring and equipment maintenance.
  • Completion: Learners must successfully complete the required centre-devised assessments to achieve the course.

Assessment Format

Two compulsory assignments submitted through the online portal

Instructor reviews assignments and provides feedback

Optional 20-question multiple-choice examination

30-minute online exam with automatic assessment

Certification

Upon successful completion of the required centre-devised, assignment-based assessments, learners will receive the Diploma in Water Treatment at QLS Level 4. This QLS-endorsed certification recognises the learner’s completion of the course and their knowledge of key water treatment processes and practices.

Career Progression

Completion can support career development in water treatment, environmental and water-quality related roles.


1

Water Resources Operator

$38,100 Approx./pa

2

Environmental Scientist

$34,290 Approx./pa

3

Water Treatment Operator

$29,210 Approx./pa

Academic Progression

Successful completion may support further study or Recognition of Prior Learning in water treatment and related subjects.

Explore further study in water treatment or related subjects

Use the Learner Unit Summary towards Recognition of Prior Learning

Seek advice on further or higher education routes

Our Student Reviews

  • Zak

    Zak Backer

    Aug 3, 2026

    review rating

    A very informative course with useful water treatment knowledge and guidance.

  • Warren

    Warren Burgs

    Aug 9, 2026

    review rating

    A useful learning experience with comprehensive course content and treatment skills.

  • Aanaya

    Aanaya Paul

    Jul 27, 2026

    review rating

    The content was detailed and useful for my learning and understanding of treatment.

  • Esmee

    Esmee Knight

    Jul 2, 2026

    review rating

    I gained valuable knowledge about safe water treatment methods and best practices.

Frequently Asked Questions (FAQs)

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