WATR06017 2021 Drinking Water Treatment

General Details

Full Title
Drinking Water Treatment
Transcript Title
Drinking Water Treatment
N/A %
Subject Area
WATR - Water Studies
CENG - Civil Eng. and Construction
06 - NFQ Level 6
10 - 10 Credits
Start Term
2021 - Full Academic Year 2021-22
End Term
9999 - The End of Time
Ann-Marie Duddy, Declan Feeney, Mel Casserly, Owen Feeney, Lisa Cronin
Programme Membership
SG_SWATE_C06 202100 Higher Certificate in Science in Water and Waste Water Operations SG_SDRIN_E06 202100 Certificate in Science in Drinking Water Treatment Operations

This Module informs the learner about the function and operation criteria of a drinking water treatment plant and its main elements. It describes the treatment stages that transform a typical raw water source (surface water or ground water) to one that is fit for human consumption and meets the required drinking water legislation. The module will explore the factors that influence the design and operation of a water treatment plant. It will also explore the importance of monitoring key parameters within a system to minimise operational problems and optimise treatment efficiency.  The learner will gain an understanding of water quality parameters and parametric values, legal requirements of drinking water treatment and customer expectations and gain an understanding of water safety planning. The module also introduces "risk" and "barrier" approach to achieving safe drinking water and monitoring requirements. Also introduced in the module are loss and wastage of water during treatment. The learner will also carry out lab testing for key water quality parameters measured routinely at plants.

Learning Outcomes

On completion of this module the learner will/should be able to;


Explain the function and operation criteria of drinking water treatment processes.


Differentiate between water treatment process steps and their application.


Perform calculations necessary for efficient plant operation and differentiate between measurement units used.


Describe the various disinfection processes and understand log credit and log removal in drinking water treatment


Define and describe water quality parameters, parametric values, methods of measurement and and carry out lab testing.


Analyse drinking water treatment plant performance, identify critical control points and understand mananging for loss/wastage of treated water


Identify and describe the "risk" and "barrier" approach to achieving safe drinking water, the main contaminants of water and their sources and drinking water safety planning.

Teaching and Learning Strategies

This module will be delivered using blended learning techniques. This will include online lectures (via adobe connect or similar), workshops and site visits augmented by directed learning and independent learning. A learning platform such as Moodle will be used to upload accessible lecture slides and lecture recordings along with other resources including videos and web resources to facilitate multiple means of engagement for students.  A learning platform such as Moodle will also be used as a means of assessment (e.g. quizzes and uploading assignments). This blended approach (lectures and workshops) brings students together to facilitate group learning’ and it will incorporate elements of enquiry and project-based learning, along with case studies, practical laboratory demonstrations, site visits to treatment facilities, group laboratory practicals, and guest lecturers.

Module Assessment Strategies

Final written examination and continuous assessment consisting of two Moodle MCQ assessment (multiple choice quiz), a workshop laboratory practical, and an individual practical assignment involving an individual report with options for multiple means of expression..  

There will be two quizzes to encourage reading of directed material, engagement with on‑line lectures and to provide feedback to students on progress with their understanding of the subject theory. The second element of CA is an evaluation of practical performance e.g. undertaking analysis of drinking water samples and interpretation of data at scheduled workshop(s). The third element of CA will be the submission of a short report e.g. on site visits undertaken.

Repeat Assessments

The learner must undertake repeat final written examination and/or continuous assessment project work depending on the particular failed element to achieve an overall pass grade.

Module Dependencies

WATR06002 201800 Water and Wastewater Science Module

Indicative Syllabus

  • World Health Organisation guidelines and European and National legislation relating to protection of water supply sources and drinking water including group water schemes.
  • Sources of raw waters for treatment and typical impurities associated with different sources.
  • Introduction to all common treatment processes and their designs for both ground and surface waters processes in treatment plants with particular emphasis on disinfection.
  • Log Credit and Log Removal approach to Water Treatment.  
  • The testing of water for basic parameters including the understanding of the significance of guide levels and parametric values and consumer requirements.
  • Introduction to  Drinking Water Safety Planning and its integrative approach into the operation of the Drinking Water Treatment Plant risk assessment and barrier approach to treatment and investment
  • Process Control and how it can be applied to the treatment of Drinking Water
  • Understanding of how to detect when process is out of control and what action to take to ensure Multi Barrier Approach remains in place to protect human health and satisfy water safety planning
  • Operational issues ‑ backwash process, biological factors (e.g. cryptosporidium and other microorganisms), THM formation from chlorination, factors affecting treatment efficiency, calculation of removal rates
  • Optimisation, monitoring and management of individual processes and the overall water treatment process
  • Interpretation of results from the monitoring of the operational stages of a water treatment plant and recommend corrective action to remedy operational problems
  • Lab testing for key water parameters such, eg. Colour, Turbidity, Alum, Total & Free Chlorine, Fluoride, pH, Conductivity, Jar testing.
  • Water loss, and wastage during treatment

Coursework & Assessment Breakdown

Coursework & Continuous Assessment
50 %
End of Semester / Year Formal Exam
50 %

Coursework Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Quiz No. 1 Continuous Assessment Assessment 10 % Week 5 1,2,3
2 Quiz No. 2 Continuous Assessment Assessment 10 % Week 10 3,4,5,6
3 Written Report Continuous Assessment Closed Book Exam 30 % Week 11 4,5,6,7

End of Semester / Year Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Final Written Exam Final Exam Closed Book Exam 50 % End of Semester 1,2,3,4,5,6,7

Part Time Mode Workload

Type Location Description Hours Frequency Avg Workload
Laboratory Practical Not Specified Workshop 3 Twice Per Semester 0.40
Total Part Time Average Weekly Learner Contact Time 0.40 Hours

Online Learning Mode Workload

Type Location Description Hours Frequency Avg Workload
Lecture Online On line lecture 2 Weekly 2.00
Directed Learning Online Directed Learning 1 Weekly 1.00
Total Online Learning Average Weekly Learner Contact Time 3.00 Hours

Required & Recommended Book List

Recommended Reading
2013 Basic Water Treatment Inst of Civil Engineers Pub
ISBN 0727758160 ISBN-13 9780727758163
Recommended Reading
2017-02-03 Twort's Water Supply Butterworth-Heinemann
ISBN 0081000251 ISBN-13 9780081000250
Required Reading
2013-10-21 Handbook of Water and Wastewater Treatment Plant Operations, Third Edition CRC Press
ISBN 9781466553378 ISBN-13 1466553375

Handbook of Water and Wastewater Treatment Plant Operations the first thorough resource manual developed exclusively for water and wastewater plant operators has been updated and expanded. An industry standard now in its third edition, this book addresses management issues and security needs, contains coverage on pharmaceuticals and personal care products (PPCPs), and includes regulatory changes. The author explains the material in laymans terms, providing real-world operating scenarios with problem-solving practice sets for each scenario. This provides readers with the ability to incorporate math with both theory and practical application. The book contains additional emphasis on operator safety, new chapters on energy conservation and sustainability, and basic science for operators. Whats New in the Third Edition: Prepares operators for licensure exams Provides additional math problems and solutions to better prepare users for certification exams Updates all chapters to reflect the developments in the field Enables users to properly operate water and wastewater plants and suggests troubleshooting procedures for returning a plant to optimum operation levels A complete compilation of water science, treatment information, process control procedures, problem-solving techniques, safety and health information, and administrative and technological trends, this text serves as a resource for professionals working in water and wastewater operations and operators preparing for wastewater licensure exams. It can also be used as a supplemental textbook for undergraduate and graduate students studying environmental science, water science, and environmental engineering.

Recommended Reading
2010-07-26 Water Technology, Third Edition Butterworth-Heinemann
ISBN 9781856177054 ISBN-13 185617705X

Previous ed.: Oxford: Elsevier Butterworth-Heinemann, 2005.

Required Reading
01/01/2002 Water treatment Manuals: Coagulation, Flocculation and Clarification EPA Wexford

Required Reading
01/01/1998 Water Treatment Manuals: Disinfection EPA

Required Reading
01/01/1995 Water Treatment Manuals: Filtration EPA

Module Resources

Non ISBN Literary Resources
Journal Resources
URL Resources

Environmental Protection Agency Drinking Water Treatment Manuals


UN Sustainable Development Goals (Goal 6 - Access to Clean Water & Sanitation & Goal 12 - Responsible Consumption and Production) 


Irish Water


GE Power & Water - Water Processes Technology


Other Resources
Additional Information