California Water Distribution D5 Exam Prep FREE Sample Exam — Fixed Set

Two facilities carry the same residual, but one consistently earns better disinfection outcomes. At the program level, what does the better-performing facility have more of?

A model of an upland transmission route reports 54 ft of friction loss spread across 3,000 ft at the future design flow. Compute the hydraulic gradient for the route.

A pump fails in an existing production well and the crew restores service by swapping in a like-for-like replacement pump the same day. How should the chief operator classify this work for permit purposes?

Accuracy testing shows one meter size class failing low in large numbers while other classes test well. How should the chief operator direct the replacement budget?

A growing utility assembling its rate case groups the coming year’s spending into four amounts: $3,150,000 to operate and maintain the system, $1,120,000 of capital spending, $640,000 of debt service, and $390,000 to build reserves. How much must its rates recover in all over the year?

A water system’s annual figures are: operations and maintenance expenditures $1,840,000; capital expenditures $625,000; debt service $412,500; reserve contributions $260,000. What are the system’s total annual expenditures?

A system contracts with an outside firm to prepare a cost-of-service rate study and with outside counsel to review the adoption documents. In the operations and maintenance budget, those contracted costs belong to which component?

Planners sizing supply for a new development phase expect the area to house 42,000 people at build-out, and they apply a per-capita use figure of 125 gallons per person daily. How much water should they expect the built-out area to need each day, expressed in MGD?

A system buys wholesale water from a neighboring agency to supplement its own sources. In the operations and maintenance budget, that purchase belongs to which component?

A service-line renewal program routinely joins new copper services to older galvanized piping left in place at some homes. Which program requirement best protects those joints?

A saturated formation sample with a total volume of 82,000 gal drains 18,500 gal of water by gravity. What is the specific yield, as a percent?

Which group consists of human-made organic chemicals most associated with industrial and degreasing activity reaching groundwater?