NJ Water/Wastewater Operator case studies
NJ Water/Wastewater Operator · Put your knowledge to work in context.
The New Jersey Water / Wastewater System Operator certification is a state credential administered through the New Jersey Department of Environmental Protection (NJDEP) for the people who run drinking water treatment plants, distribution systems, wastewater treatment plants and collection systems. Operators must hold a license at the grade appropriate to their facility, so candidates are typically utility staff, trainees, and plant or maintenance personnel moving into a licensed operator role, plus military and career changers entering the field. The NJ Water/Wastewater Operator case studies are 5 cases and about 4,329 words.
1Filter 2 Breaks Through After a Coagulant Cut
Riverview Water Treatment Plant is a 4.0 MGD conventional plant - alum plus anionic polymer, three dual-media filters - serving 11,000 people. After a weekend storm, raw alkalinity fell from 62 to 34 mg/L as CaCO3 and raw turbidity rose from 4 to 38 NTU.
897 words, about 4 min2Positive Coliform Sample With a Holding-Time Problem
Cedar Hollow is a 1,900-connection community system that buys finished water from a neighboring utility. It must collect 24 routine coliform samples per month; free chlorine leaves the master meter at 0.5–0.9 mg/L.
836 words, about 4 min3Main Break, Eleven PSI, and a Nursing Home
At 02:40 on a Sunday a 12-inch unlined cast-iron main (installed 1954) fails under a state highway in front of a 120-bed nursing home. The crew isolates it at 03:30 using two gate valves; the valve that would have confined the outage to four blocks is stuck open.
839 words, about 4 min4Nitrate Climbing in a Two-Well Blended Supply
Sand Hill is a 0.9 MGD groundwater system served by two wells in a wellhead protection area surrounded by former truck farms and now zoned for a 240-unit residential development on septic. Well W-1 has produced nitrate at 9.4 mg/L as N on the last four quarterly samples, up from 7.2 six years ago; W-2 is at 4.1 mg/L.
860 words, about 4 min5Lead Action Level Exceedance With a Bad Sample in the Set
Elmwood Water Department has 4,200 connections and has just completed its 60-sample lead and copper tap monitoring. Treatment is free chlorine at 0.7 mg/L, pH 7.5, alkalinity 40 mg/L as CaCO3, and no corrosion inhibitor.
897 words, about 4 min