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Follow the supply from the incoming main to its outlets. The free question set checks how mains and stored supplies work, how storage affects flow and hygiene, and why water needs protection from contamination.
Trace how each outlet is supplied before answering a diagram question. Explain the job of the cistern, float valve and isolation points, then compare how the arrangement affects the questions you would ask about flow and storage.
Compare direct and indirect suppliesKeep capacity, pressure and flow rate separate in your working. Sketch the dimensions for a storage calculation and mark the relevant height for a pressure question. Check the units before choosing between similar-looking answers.
Work through a cistern-capacity exampleUse a water-supply scenario to identify where contamination could enter and what protection needs considering. A diagram is easier to reason through when you can explain each connection rather than just name its fittings.
Revise backflow and air gapsWhen a question includes a diagram, identify the feed, isolation point and outlet first. For a pressure question, check the units and vertical height rather than the total pipe length. Use the head-pressure calculator to check your working after answering.
Use a cold water mock practice test to check recall without seeing explanations after each question. This is one topic in plumbing revision; work through the other units in your course as well.
The free test offers 5, 10 or 25 questions from this same set, with an optional practice timer. In Test mode, answers and explanations appear after you finish. Repeated tests reuse this bank, so a higher score can reflect familiarity.
Set up a free Cold water systems testCold water is a foundation of plumbing theory, alongside safety, hot water, heating and sanitation. Use this set to check one part of your understanding, then compare your revision plan with the units in your own qualification handbook.
This is a cold water practice set with some overlapping principles, including storage hygiene and backflow protection. A Water Regulations assessment has its own scope. Study that separately if it is part of your training route.
Draw the supply route from memory, label the storage and control components, and explain which outlets each pipe supplies. Then compare your sketch with the study note. When an answer is wrong, correct the part of the route that led to the mistake.
Yes. The Test setup uses 5, 10 or all 25 questions from this set. Choose an optional practice timer and review the explanations after finishing. For broader plumbing exam revision, add the heating, diagnostic and site-safety sets as well.
All 25 questions on this page are free, with no account or card required. They are selected from the maintained Cold water systems question bank. Premium opens the full bank of 126 questions, more modules and Weak-Spot Review.
A free account saves the answers you give while signed in and lets you continue across devices. Without an account, this browser can remember your place for 30 days; it does not transfer earlier guest answers into an account. Signing up keeps the same free question allowance.