AZ Water Operator study plan
AZ Water Operator · Give each week a clear focus.
8 weeks · About 7 hours per week
Water Treatment Processes (coagulation, flocculation, sedimentation, filtration, disinfection)
Diagram the full treatment train from source intake to finished-water storage, labeling each unit process and its purpose
Explain coagulation and flocculation mechanisms in writing, including why coagulant is added and what mixing energy does at each stage
Calculate a coagulant dose and a jar-test dilution from given raw numbers
List the operational variables that most affect sedimentation performance and predict the effect of changing each one
Your checkpoint
A one-page treatment-train schematic plus a written jar-test procedure with three worked dose calculations
Water Treatment Processes (coagulation, flocculation, sedimentation, filtration, disinfection)
Describe filtration mechanisms and backwash sequencing, and identify the indicators that a filter is breaking through
Explain CT concept and disinfection contact-time requirements without looking at notes
Compare chlorine, chloramine, ozone, and UV on effectiveness, residuals, and byproducts
Solve five disinfection residual and demand problems
Your checkpoint
A disinfection comparison table with CT worked problems and a pass/fail judgment on three sample scenarios
Chemical Feed, Storage, and Handling & Pumps, Motors, Valves, and Mechanical Equipment
Calculate chemical feed rates from dose, flow, and solution strength
Identify safe storage and handling requirements for chlorine, coagulants, and fluoride, including secondary containment
Explain pump curves, cavitation, and the difference between positive-displacement and centrifugal pumps
Describe valve types and select the right valve for three described service conditions
Outline motor protection, lubrication, and basic preventive maintenance tasks
Your checkpoint
A chemical feed calculation worksheet with five solved problems plus a pump-and-valve troubleshooting quick-reference card
Distribution Systems, Storage, and Cross-Connection Control
Trace a drop of water from treatment through distribution to the customer, naming each appurtenance and its function
Explain pressure, head loss, and flow relationships in distribution mains
Identify cross-connection hazards and select the correct backflow prevention device for five scenarios
Describe storage tank operations, turnover, and water-quality risks in finished-water reservoirs
Your checkpoint
A cross-connection scenario set of five cases, each with the hazard class, required protection, and justification
Water Quality Monitoring, Sampling, and Laboratory Analysis & Regulations, Reporting, and Public Health Compliance
Explain proper sampling technique, chain of custody, and preservation for bacteriological and chemical samples
Interpret turbidity, chlorine residual, pH, and coliform results against regulatory limits
Summarize reporting obligations, public notification tiers, and recordkeeping timelines
Match each major regulation to the contaminant or practice it governs
Your checkpoint
A sample-handling checklist plus a regulation-to-requirement matching sheet with at least ten entries
Water Sources, Hydrology, and Source Water Protection & Safety, Emergency Response, and Security
Describe source water types, watershed protection measures, and source water assessment concepts
Explain how source water quality drives treatment decisions
Identify confined-space, chemical, and electrical hazards and the controls for each
Outline emergency response and security procedures for a water system, including boil-water notices
Your checkpoint
A source-to-treatment risk summary for one hypothetical source plus a safety hazard-control matrix covering at least eight hazards
Water Treatment Processes (coagulation, flocculation, sedimentation, filtration, disinfection) & Distribution Systems, Storage, and Cross-Connection Control & Water Quality Monitoring, Sampling, and Laboratory Analysis
Re-derive the highest-yield treatment calculations from memory
Re-solve distribution and sampling problems missed in earlier weeks
Explain the interactions among treatment, distribution, and monitoring that cause compliance failures
Diagnose three integrated scenarios that span treatment, distribution, and lab results
Your checkpoint
A timed 25-question mixed-domain practice set with a written error log identifying the root cause of each miss
Chemical Feed, Storage, and Handling & Pumps, Motors, Valves, and Mechanical Equipment & Regulations, Reporting, and Public Health Compliance & Safety, Emergency Response, and Security
Review chemical, mechanical, regulatory, and safety content using spaced-repetition flashcards
Complete a full-length timed practice exam under test conditions
Analyze every missed item and map it to its domain and underlying concept
Build a final one-page formula and key-fact sheet for exam-day review
Your checkpoint
A scored full-length practice exam with a remediation list and a completed one-page exam-day reference sheet
Milestones
Week 2: Score at least 80% on a self-made 15-question quiz covering only treatment processes, with all disinfection calculations correct
Week 4: Correctly classify the required backflow protection in at least 4 of 5 cross-connection scenarios and solve all chemical feed calculations without notes
Week 6: Explain source water protection and emergency response procedures aloud for 10 minutes without reference material
Week 8: Achieve 75% or higher on the full-length timed practice exam, with no domain scoring below 60%