KY Water Operator study plan

Explain how coagulant dose, raw-water alkalinity, and pH interact, and calculate the lime or caustic soda dose needed to hold a target coagulation pH.

Distinguish sweep floc, charge neutralization, and interparticle bridging, and state the turbidity and dose range where each dominates.

Compute jar-test results: percent turbidity removal, optimum dose selection, and settled-water turbidity targets before filtration.

Describe sedimentation basin zone behavior (inlet, settling, sludge, outlet) and calculate surface overflow rate and detention time from basin dimensions and flow.

Sequence the filtration unit processes from coagulation through filter ripening and explain why filter effluent turbidity is a regulatory limit rather than an operational preference.

Calculate filter loading rate, backwash rate, and percent bed expansion from given flow, area, and media properties.

Diagnose common filter problems (air binding, mudballs, media loss, short filter runs, turbidity breakthrough) and match each to a corrective action.

Identify filter-to-waste, ripening, and filter surveillance practices that keep combined filter effluent turbidity low.

Explain the treatment technique requirements for filtration and turbidity, including the difference between individual filter and combined filter effluent limits.

Compare conventional, direct, and membrane filtration and state which source-water conditions favor each.

Calculate CT (disinfectant residual times contact time) for free chlorine and compare it to the required CT for a given pH, temperature, and log inactivation target.

Explain how temperature, pH, and ammonia affect chlorine speciation and disinfection efficiency.

Describe the four precursor and treatment levers that control disinfection byproducts (TOC removal, enhanced coagulation, alternative disinfectants, distribution management) and the monitoring rules that apply.

Summarize the Stage 2 Disinfectants and Disinfection Byproducts Rule monitoring locations and the maximum contaminant levels for TTHM and HAA5.

Outline the major drinking water regulations (Surface Water Treatment Rule, Total Coliform Rule, Lead and Copper Rule, nitrate and arsenic standards) and what each requires an operator to do.

Calculate head loss, flow, and pressure conversions across a distribution system using the Hazen-Williams relationship and unit conversions between psi, feet of head, and gallons per minute.

Explain pump curves, system curves, operating point, and the causes and consequences of cavitation and water hammer.

Describe storage tank operation, turnover, and the role of tanks in maintaining pressure and emergency reserve.

Identify distribution system maintenance practices including main flushing, valve exercising, hydrant inspection, and main repair disinfection.

Explain how distribution system pressure, disinfectant residual, and storage practices protect water quality from treatment plant to tap.

Characterize surface and groundwater sources by watershed, aquifer type, and vulnerability to contamination, and identify the contaminants most likely in each.

Describe wellhead and source water protection measures, including sanitary surveys, source water assessments, and land use controls.

Explain the difference between backsiphonage and backpressure and identify the degree of hazard for common cross-connections.

Match backflow prevention devices (air gap, RPZ, double check, PVB, atmospheric vacuum breaker) to the hazard level and installation constraints they suit.

Outline a cross-connection control program: survey, device selection, installation, annual testing, and recordkeeping.

Select the correct sample container, preservation method, holding time, and analytical method for turbidity, chlorine residual, pH, nitrate, total coliform, and lead/copper samples.

Explain proper sampling technique for bacteriological samples, including tap selection, flushing, and aseptic handling, and the meaning of a positive result.

Interpret a certificate of analysis and a chain-of-custody form and describe how quality control samples (blanks, duplicates, spikes) detect laboratory error.

Identify the reporting obligations that follow monitoring results, including public notification tiers and timelines for violations.

Summarize operator certification requirements in Kentucky, including certification levels, continuing education hours, and renewal cycles.

Identify confined space, chlorine gas, and electrical hazards in water treatment and distribution work and state the controls required for each.

Describe emergency response procedures for a main break, a loss of pressure, a boil water advisory, and a contamination event.

Explain distribution system security measures and the components of an emergency response plan, including mutual aid and communication.

Apply lockout/tagout, personal protective equipment, and atmospheric testing requirements to a treatment plant maintenance task.

Describe how to respond to a distribution system pressure drop below the regulatory minimum, including notification and corrective sampling.

Complete a timed 100-question practice exam across all eleven domains and record the score by domain.

Review every missed question, write the underlying rule or calculation, and identify the two weakest domains.

Re-drill the highest-weight weak domains (disinfection, distribution, coagulation) until calculation questions are answered correctly without notes.

Recite from memory the key numeric limits: turbidity limits, TTHM and HAA5 maximums, chlorine residual minimums, and pressure minimums.

Build a one-page formula and limits reference sheet to review in the final days before the exam.