AL Water Operator study plan
AL Water Operator · Give each week a clear focus.
8 weeks · About 6 hours per week
Treatment Processes (Coagulation, Flocculation, Sedimentation, Filtration)
Differentiate coagulant options (alum, ferric salts, polyaluminum chloride, cationic polymers) by applicable pH range, alkalinity consumption, and sludge implications
Describe the jar test procedure step by step and interpret dose, rapid-mix, and flocculation results to select an optimum dose
Explain flocculation velocity gradient (G) and taper, and the four settling regimes used in sedimentation basin design
Calculate detention time, surface overflow rate, and weir loading rate for a rectangular sedimentation basin and check results against typical design ranges
Your checkpoint
One-page jar-test interpretation flowchart plus a 20-problem coagulation/sedimentation calculation set scored at 85% or better
Treatment Processes (Coagulation, Flocculation, Sedimentation, Filtration) & Regulations, Monitoring, Reporting, Safety, and Calculations
Compare rapid sand, dual-media, granular activated carbon, and low-pressure membrane filtration by removal mechanism, loading rate, and backwash requirements
Diagnose common filter failure signatures (air binding, mudballs, media loss, turbidity breakthrough, short filter runs) and match each to a corrective action
Calculate filtration rate, backwash rise rate and percent bed expansion, and unit filter run volume from given plant data
Interpret a turbidity and particle-count trend to justify a filter-to-waste or backwash decision
Your checkpoint
A 10-row filter troubleshooting matrix (symptom to probable cause to corrective action) plus a timed 15-question filtration calculation set scored at 80% or better
Disinfection and Residual Maintenance
Compare free chlorine, chloramine, chlorine dioxide, ozone, and UV by disinfection strength, residual stability, byproduct risk, and operational complexity
Explain chlorine speciation (HOCl versus OCl-) as a function of pH and temperature and predict the effect on disinfection efficiency
Calculate required CT for a target log inactivation and compare it with available CT computed from residual, contact time, baffling factor, and peak flow
Describe disinfection byproduct formation drivers and at least three control strategies, and explain how a distribution residual target is set and maintained
Your checkpoint
A CT calculation worksheet with 12 worked problems (required versus available CT, baffling factor adjustments) scored at 80% or better
Disinfection and Residual Maintenance & Regulations, Monitoring, Reporting, Safety, and Calculations
Map disinfection-related monitoring and reporting obligations to concrete operator actions (sample points, frequency, repeat samples, public notice triggers)
Explain residual maintenance tactics including booster chlorination siting and the effect of storage turnover on residual decay
Solve combined treatment and disinfection word problems under a time limit without reference notes
Categorize every missed practice item by domain and root cause (knowledge gap versus calculation error versus misread question)
Your checkpoint
A 40-question mixed practice exam covering Domains 2 and 3 scored at 75% or better, with a categorized error log and a one-page disinfection compliance calendar
Source Water and Water Quality Characteristics & Regulations, Monitoring, Reporting, Safety, and Calculations
Characterize groundwater versus surface water sources by turbidity, hardness, alkalinity, natural organic matter, iron/manganese, and seasonal variability
Describe watershed and wellhead protection activities and explain what a source water assessment contributes to treatment decisions
Calculate hardness, alkalinity, and the Langelier Saturation Index from reported lab values, and state whether the water is scaling or corrosive
Match each contaminant class (turbidity, nitrate, arsenic, radionuclides, synthetic organics, microbial) to the treatment process that addresses it
Your checkpoint
A source-water-to-treatment matching matrix covering six contaminant classes plus a 10-problem hardness/alkalinity/LSI set scored at 85% or better
Pumps, Storage, and Distribution System Operations
Interpret a pump curve against a system curve to identify operating point, and explain the causes and symptoms of cavitation including NPSH margin
Calculate total dynamic head, hydraulic horsepower, brake horsepower, and wire-to-water efficiency from field data
Describe storage tank operating goals (turnover, level control, emergency reserve, mixing) and the water quality risks of oversized or stagnant storage
Outline cross-connection control, main flushing, valve exercising, and pressure management practices that protect distribution water quality
Your checkpoint
A 15-problem pump, head, and horsepower set scored at 85% or better plus a one-page distribution water quality risk checklist
Regulations, Monitoring, Reporting, Safety, and Calculations
Outline the monitoring, recordkeeping, and reporting cycle for a public water system, including consumer confidence report content and public notice tiering
Apply safe handling practices for chlorine gas, hypochlorite, and ammonia, and identify confined space and hazard communication requirements
Rework every missed item from weeks 1 through 6 and re-solve each untimed until correct
Locate the specific regulatory or calculation reference that resolves each previously missed item and annotate it
Your checkpoint
Two full-length timed practice exams with a consolidated error log sorted by domain and an annotated list of references for every missed concept
Treatment Processes (Coagulation, Flocculation, Sedimentation, Filtration) & Disinfection and Residual Maintenance & Pumps, Storage, and Distribution System Operations & Regulations, Monitoring, Reporting, Safety, and Calculations & Source Water and Water Quality Characteristics
Assemble four one-page reference sheets (treatment, disinfection/CT, pumps and distribution, regulations and calculations) written in your own words
Complete full-length timed simulations using the same pacing and break schedule planned for exam day
Drill the two weakest domains identified in the week 7 error log until each reaches 85% or better on a fresh 20-question set
Verify every memorized formula by unit-checking it against one worked example
Your checkpoint
Two timed full-length simulations at 80% or better plus a completed four-sheet personal reference packet
Milestones
Week 2: Can solve any coagulation, sedimentation, or filtration calculation cold, with correct units, and explain the jar-test decision path without notes
Week 4: Scores 75% or better on a 40-question Domains 2 and 3 mixed exam and can compute CT required versus available for a worked plant scenario
Week 6: Scores 85% or better on unlseen pump, head, and efficiency problems and can explain cavitation causes from a pump curve
Week 8: Scores 80% or better on two full-length timed simulations with no domain below 70%