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These 10 free CCS questions are organized by exam domain, so you can see how each part of the Cannabis Compliance Specialist blueprint is tested. Reveal the answer and explanation under each question.
The pressure complaint began after a service backflow assembly was installed. During water-heater recovery, building pressure climbs gradually from 62 to 94 psig despite a steady 62 psig in the street main. No fixtures are operating; opening a cold tap releases the excess pressure. These observations point first to:
Correct answer: A - Thermal expansion of heated water trapped in the newly closed plumbing system.
An open process tank contains nonpotable liquid with the density of fresh water. Its surface stands 42 ft above the potable connection, where main pressure is 12 psig. If the backflow barrier fails, what pressure relationship can initiate flow? Neglect friction losses.
Correct answer: C - The tank exceeds main pressure by about 6.2 psi, allowing backpressure backflow into the main.
In September 2026, a California owner proposes replacing an irreparable 2018 DC with an identical new one. The old assembly qualified for continued use under the auxiliary-supply exception: no backflow, all tests passing, written supplier approval and a recorded location, and no other high-hazard activity. The auxiliary well remains available. What protection is permitted for the replacement?
Correct answer: C - An approved RP or an approved air-gap arrangement.
A greenhouse is adding fertilizer injection to its irrigation system. The injection pump can raise irrigation-line pressure above the pressure at the potable supply connection. The owner needs to keep that connection continuously pressurized. Which assembly is suitable for this hazard?
Correct answer: C - A reduced pressure principle assembly (RP)
RP field-test results using a valid USC Tenth Edition procedure: first check, 5.8 psid; relief opening, 3.4 psid; second check, tight against backpressure. Installation and test conditions are satisfactory. How should the overall result be recorded?
Correct answer: D - Pass: the first check, relief opening, and second-check tightness all meet the applicable criteria.
Three services enter one California industrial property: process water through the RP required by its hazard assessment; a standby nonfire feed through a DC; and a hydraulically separate, low-hazard fire service through an approved DCDA. The process and fire protection are adequate. Identify the minimum remaining containment correction.
Correct answer: B - Upgrade the standby service to RP protection; keep the separately adequate fire-service protection.
A utility's monthly report lists 240 assemblies due for testing. On-time reports were received for 228 assemblies; 12 of those reports showed failures that remained uncorrected at the deadline. The report labels 95% of assemblies 'tested on time and passing.' What percentage actually belongs under that label?
Correct answer: D - 90%
'We do not hear about a new tenant until the annual test report arrives,' a utility coordinator explains. A former clothing store is now a pet groomer, but it still has its old hazard classification and a passing DC test. Which program control addresses the missed change in use?
Correct answer: A - Route occupancy and plumbing-permit notices to the coordinator for a new hazard assessment.
A separation-test log reads: 'Protected potable system pressurized; recycled-water section isolated and depressurized. Stored water drained, but outlet flow continued. Leakage then confirmed through the recycled-supply isolation valve.' How should the specialist classify this phase?
Correct answer: B - Inconclusive; repeat this phase after repairing the leaking recycled-supply isolation valve.
A tester observes chemical process water moving through a failed service RP toward a California public main. The water supplier confirms backflow, but the affected service is still open. The owner's repair crew can arrive tomorrow. What is the immediate priority?
Correct answer: A - Discontinue that service and initiate notification to the State Water Board and local health agencies.
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