Water Treatment Operator Class III study plan

Diagram the coagulation-flocculation-sedimentation train and label each unit process and its key control parameter

Explain the purpose and typical dose ranges of alum, ferric chloride, and polymer coagulants, and predict jar-test outcomes when dose or pH shifts

Define CT, log inactivation, and the relationship among disinfectant residual, contact time, pH, and temperature for free chlorine

List the regulated DBP groups (TTHMs, HAA5) and identify at least four operational levers that reduce their formation

Work through six jar-test scenarios and select the best coagulant dose and pH for each, justifying the choice

Calculate a chlorine dose needed to hit a target residual given demand, and compute a CT value from concentration and contact time

Compare free chlorine, chloramine, chlorine dioxide, and ozone on strength, DBP formation, and operational constraints

Identify the four Stage 2 DBR rule compliance calculation steps and locate the highest TTHM and HAA5 LRAA sites conceptually

Describe conventional, direct, and membrane filtration and state the regulatory turbidity limits for each

Explain filter media, support gravel, and underdrain function and how backwash rate, duration, and air scour affect media condition

Diagnose three filter problems (air binding, mudballs, media loss) and prescribe corrective actions

Explain how filter loading rate, coagulant carryover, and floc strength influence effluent turbidity

Characterize source water by type (surface, groundwater, purchased) and list the contaminants each typically presents

Interpret alkalinity, hardness, pH, turbidity, and TOC results and explain how each drives treatment decisions

Perform and interpret a chlorine residual test, a turbidity reading, and a pH measurement, noting common interferences

Explain how source water changes (storm events, turnover, algal blooms) trigger treatment adjustments

Calculate chemical feed rates from dose, flow, and solution strength, and convert among ppm, mg/L, and pounds per day

Describe safe storage, secondary containment, labeling, and incompatibility rules for chlorine, coagulants, fluoride, and caustic

Explain pump curves, system curves, NPSH, and cavitation, and identify symptoms of each in the field

Distinguish valve types (gate, globe, butterfly, check, altitude) by function and typical application

Build a process control monitoring plan listing each critical parameter, its target range, alarm setpoint, and response action

Interpret trend data to detect drift in coagulant dose, filter run time, or disinfectant residual before a violation occurs

Map each major rule (Surface Water Treatment Rules, Stage 2 DBR, Lead and Copper, Total Coliform) to its key monitoring and reporting obligations

Outline the required content and timing of a monthly operating report and a public notification for a monitoring violation

Explain chlorine gas, sodium hypochlorite, and anhydrous ammonia hazards and the required PPE and response steps for a release

Describe confined space entry procedures, atmospheric testing, and rescue requirements

Outline emergency response for loss of power, loss of pressure, source contamination, and a security breach

State the operator certification and continuing education obligations and the public notification timelines for Tier 1, 2, and 3 events

Complete two full-length timed practice exams and score each domain separately

Review every missed question and write the underlying concept in your own words

Re-drill the two weakest domains with targeted calculation and concept practice

Recite the key regulatory limits (turbidity, CT, DBP MCLs, residual) from memory without notes