Complete the following details:
Name
Name of Instructor
Water quality characteristic
Instructions
To record your answers for the activities and tasks, you will need to:
1) click in the text boxes
2) type your response
When you close the document you will be prompted to save your changes. Save the document to your computer hard drive or a removable storage device such as a USB drive.
When finished, print it and keep it with the other forms and records. You may be required to submit this document as part of your evidence of learning for this task. Please check with your instructor or team leader.
Complete the following table about the settled water characteristics.
Acceptable levels What can cause changes in this characteristic
Impact on treatment processes
Turbidity pH
Excess residual coagulant level
How does the temperature of influent water impact on settled water quality?
Worksheet 5 – Troubleshooting problems based on settled water characteristics Page 1 of 2

Complete the following worksheet to develop a troubleshooting guide for diagnosing and rectifying problems. Add at least three relevant to your workplace.
Possible issue How to investigate How to treat the breakdown
No floc formation or small size of floc
Check raw water to see if characteristics have changed outside the chemical dosing system.
Complete a jar test to establish the optimum combination of treatment chemicals and their dose rates.
Change coagulation and flocculation dosing in line with results from jar test.
1.
2.
3.
Worksheet 5 – Troubleshooting problems based on settled water characteristics Page 2 of 2