CA Water Operator study plan

Diagram the source-to-tap flow for one surface water and one groundwater system, labeling every treatment barrier and the regulatory driver behind each.

Build a one-page reference table of California primary and secondary MCLs for the 15 most commonly tested contaminants, including the monitoring frequency for each.

Classify 10 given contaminants as point-source or nonpoint-source, and state which treatment process is most effective against each.

Solve 15 mass-balance and blending problems where two source waters are combined to meet an MCL, showing units at every step.

Draw and label the coagulation-flocculation-sedimentation-filtration train, stating the percent removal target for turbidity and TOC at each unit.

Given raw turbidity, pH, alkalinity, and TOC, select a coagulant and justify dose and pH adjustments using jar-test logic.

Calculate surface overflow rate, weir loading, detention time, and filter loading rate (gpm/ft2) across 12 practice problems.

Interpret an actual filter run curve to identify breakthrough, terminal headloss, and the trigger point for filter-to-waste.

State the backwash rate, bed expansion, and duration parameters for a mixed-media filter and explain the causes of mudballs and air binding.

Compare free chlorine, chloramine, ozone, chlorine dioxide, and UV on CT credit, DBP formation potential, and log-credit for Giardia and viruses.

Calculate CT required versus CT achieved for 10 scenarios varying pH, temperature, and residual, and state compliance in each case.

Compute the locational running annual average for TTHM and HAA5 from four quarters of data at four monitoring sites and identify any exceedance.

Outline the TOC removal ratio requirement and list three operational precursor-control strategies for a conventional plant.

Describe nitrification in a chloraminated system: leading indicators, monitoring locations, and three corrective actions in order of preference.

Diagram a distribution system with pressure zones, storage, and booster pumping, and label the minimum and maximum operating pressure limits.

Build a device-selection matrix distinguishing backsiphonage from backpressure, and place RPZ, DCVA, PVB, and AVB assemblies in the applications where each is permitted.

Calculate chlorine residual decay and water age across a service area, then prescribe a flushing sequence with target residual endpoints.

Compute required storage volume, fire flow, and equalization capacity for a stated demand scenario, showing the peaking factor used.

Walk a mock sanitary survey and record at least 15 potential contamination pathways or defects with the corrective action for each.

Solve 15 pump problems covering total dynamic head, brake horsepower, wire-to-water efficiency, and motor loading, keeping units explicit.

Plot a system curve against a pump curve to locate the operating point, then predict the new operating point after an impeller trim or VFD speed change.

Diagnose cavitation, air binding, and insufficient NPSH margin from three given symptom sets, and recommend a fix for each.

Compare magnetic, ultrasonic, venturi, and positive-displacement meters on accuracy, installation requirements, and calibration method.

Trace a full instrument loop from sensor to transmitter to controller to SCADA, and state the calibration interval and field-verification method for each device type.

Solve 10 electrical problems covering amperage, voltage unbalance, power factor correction, and energy cost per acre-foot pumped.

Specify the field calibration procedure and acceptance criteria for a turbidimeter, pH probe, residual chlorine analyzer, and level sensor.

Build a 12-month compliance calendar listing every bacteriological, DBP, lead and copper, and CCR deadline with the responsible party and the sample count.

Map the Tier 1, Tier 2, and Tier 3 public notice triggers and the required delivery timeframe and content for each tier.

List the permit-required confined space entry steps and the chlorine gas emergency response sequence, including the concentration thresholds that drive evacuation.

Complete a full-length 100-question practice exam under timed conditions and log every miss by domain and by cause (knowledge gap, misread, math error).

Re-teach the two lowest-scoring domains using the error log, rewriting each missed concept in your own words.

Rehearse three safety scenarios (chlorine leak, confined space rescue, trench excavation) and write the required notifications and shutdown steps for each.

Explain the reporting chain from sample collection through chain of custody to the state database, including holding times and preservation for three sample types.

Retake every previously missed item and take a second full-length exam, targeting 85% or higher.

Write the complete formula sheet from memory, then check it against notes and correct gaps.

Run three timed 20-minute calculation drills covering dosage, CT, filter loading, and pump horsepower.

Recite from memory the MCL values, public notice tiers, and cross-connection device applications without notes.