IL Water/WW Operator case studies
IL Water/WW Operator · Put your knowledge to work in context.
The Illinois Drinking Water Operator Certification is a credential issued through the Illinois EPA's Drinking Water Operator Certification Program, which "certifies the technical competency of operators of community water supplies." The program exists because drinking water treatment systems must be properly operated and maintained to protect public health, and because poorly run systems put a community's financial investment at risk. A certified operator must be able to perform duties without endangering public health, so the Illinois EPA evaluates whether applicants possess the necessary skills, knowledge, ability and judgment to operate and maintain the facilities entrusted to their care. The IL Water/WW Operator case studies are 5 cases and about 4,054 words.
1Turbidity Spike at a Two-Intake River Plant
A 4.0 MGD conventional surface water plant draws from a river through two intakes: a fixed low-level intake 6 ft below normal pool and a floating intake that follows the surface. The plant is producing 3.2 MGD.
822 words, about 4 min2Filter Breakthrough With Two Filters Out of Service
A 9.0 MGD conventional plant has six mixed-media filters, each 16 ft by 20 ft (320 ft2), designed for 4 gpm/ft2. Two filters are down for media replacement, so four are carrying the full 7.2 MGD currently being produced.
817 words, about 4 min3Main Break, Loss of Pressure, and a Boil Order Decision
a 12-inch cast iron main breaks at a four-way intersection in a residential area serving about 900 people through 310 connections. The crew closes four valves; the area is bounded by three pressure-reducing valves and takes three hours to isolate completely.
814 words, about 4 min4E. coli Positive Routine Sample at a Dead End
A 1,800-connection community system collects 20 routine total coliform samples per month. On Tuesday the lab reports that a routine sample collected Monday at 3:40 p.m.
776 words, about 4 min5Lead 90th Percentile Above the Action Level
A community water system with 4,200 connections completes standard lead monitoring with 60 valid first-draw samples from Tier 2 sites. Seven results exceed 0.015 mg/L: 0.017, 0.019, 0.021, 0.024, 0.031, 0.048 and 0.092 mg/L.
825 words, about 4 min