Water Treatment Operator Class IV study plan

Diagram a conventional surface-water treatment train (coagulation through disinfection) from memory, labeling each unit process and its purpose.

Explain how raw-water quality changes (turbidity, alkalinity, temperature) drive adjustments to coagulant dose and process targets.

Calculate basic coagulant and chemical feed doses using jar-test-style worked problems.

Define the operator's decision points for filter-to-waste, backwash initiation, and post-backwash return to service.

Compare disinfection strategies (free chlorine, chloramination, ozone, UV) by CT concept, byproduct risk, and operational constraints.

Compute CT available and required for a worked example and judge compliance.

Identify the sampling points and monitoring frequencies tied to each treatment process stage.

Explain how process upsets (filter breakthrough, coagulant feed failure) appear in monitoring data and what corrective action follows.

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

Describe proper aseptic technique and chain-of-custody documentation for bacteriological sampling.

Interpret lab results against primary and secondary standards and decide when resampling or public notice is triggered.

Explain QA/QC basics: blanks, duplicates, spikes, and calibration verification for field instruments.

Map each routine monitoring requirement to its regulatory driver (e.g., TCR, Stage 2 DBPR, LT2, Lead and Copper Rule).

Draft the notification and reporting sequence for a positive total coliform result, including timelines.

Explain how compliance calculations (LRAA, 90th percentile lead, CT, turbidity limits) are performed from raw data.

Identify which records must be retained, for how long, and who may review them.

Summarize the reporting obligations and deadlines for a monthly operating report and an annual consumer confidence report.

Differentiate Tier 1, Tier 2, and Tier 3 public notice requirements by violation type and timeline.

Outline the steps of a sanitary survey and predict the most commonly cited deficiencies.

Describe how to respond to a violation notice, including root-cause analysis and corrective action documentation.

Build a preventive maintenance schedule for pumps, chemical feed systems, filters, and analyzers with intervals and acceptance criteria.

Diagnose common failures (loss of prime, short filter runs, drifting chlorine analyzer, clogged chemical feed line) from symptoms to root cause.

Perform a lockout/tagout sequence for a simulated pump repair, listing each energy source isolated.

Identify confined-space, chlorine gas, and electrical hazards and the controls required before entry or work.

Troubleshoot a simulated treatment upset (high finished turbidity, low chlorine residual) using a structured symptom-cause-action log.

Explain calibration and verification procedures for turbidimeters, pH meters, and chlorine analyzers.

Describe emergency response for a chemical spill, power loss, and loss of pressure, including notification steps.

Evaluate redundancy and standby power readiness for critical unit processes.

Complete a timed 100-question practice exam spanning all four domains and score each domain separately.

Review every missed item and write a one-sentence rule or fact for each.

Revisit the two lowest-scoring domains with targeted drills until each reaches 80 percent.

Assemble a final one-page quick-reference sheet of formulas, limits, and timelines.