LA Water Operator case studies
LA Water Operator · Put your knowledge to work in context.
The Louisiana Water Operator credential is administered through the Louisiana Department of Health's Operator Certification Program, which is listed within the Bureau of Engineering Services alongside the Safe Drinking Water Program. It is intended for people who operate or supervise public drinking water systems and who need state recognition of their competence. The LA Water Operator case studies are 5 cases and about 4,570 words.
1Filter 3 Turbidity Climb After a Storm
A 16-MGD conventional filtration plant is running at 9.4 MGD with all four filters in service; each filter has 700 ft² of media surface. Overnight, raw turbidity rose from 4 NTU to 22 NTU after a storm and raw pH fell from 7.6 to 7.2.
804 words, about 4 min2Main Break, 8 psi, and 220 Services Downstream
At 03:10 a 12-inch asbestos-cement main on a hillside street fails. The crew isolates it at 04:00 and completes the repair at 12:40.
905 words, about 5 min3Lead 90th Percentile - Two High Results and a Councilmember
A community water system is required to collect 20 lead samples per six-month monitoring period from tier sites. The results come back in mg/L, highest to lowest: 0.024, 0.019, 0.017, 0.014, 0.012, 0.011, 0.010, 0.009, 0.009, 0.008, 0.007, 0.007, 0.006, 0.006, 0.005, 0.004, 0.004, 0.003, 0.002, 0.002.
922 words, about 5 min4Confined Space Entry in a Wet Valve Vault
A crew must replace a 6-inch gate valve gasket inside an 18-ft-deep, 6-ft-diameter vault. Two feet of standing water covers the vault floor and the ladder rungs are corroded.
969 words, about 5 min5Nitrate at 10.8 mg/L and a Board That Wants to Wait
A 3,400-connection community system serves an agricultural valley with two wells and no treatment. Well A produces 13.5 mg/L nitrate as N; Well B produces 4.2 mg/L.
970 words, about 5 min