Burtonville Reservoir Comparison
The water system
The source describes two reservoirs serving the City of Wilmington Water Treatment Plant. It reports production of approximately two million gallons per day for about 12,500 people and a combined reservoir capacity of approximately 450 million gallons.
The comparison
Both reservoirs historically experienced green algae and cyanobacteria, including Cylindrospermopsis and Microcystis. A solar floating Quattro-DB unit was installed in Reservoir 1, while copper-sulphate treatment continued in Reservoir 2 as an operational comparison.
Customer-reported observations
- Rick Schaefer reported that the ultrasonic reservoir appeared clearer than it had historically and had a lower overall cyanobacteria count.
- The quoted record says the prior year’s cylindrospermopsin level peaked at 1.0 microgram per litre, approximately seven times the later result referenced in the quotation.
- The customer also noted possible lower effectiveness on benthic species; this limitation should remain in the public case.
Evidence classification
Classification: Manufacturer-published paired-reservoir customer report. It provides a useful operational comparison but not a complete controlled scientific dataset.
Important notice
Do not state that ultrasound eliminates cyanobacteria or toxins. Reservoir performance depends on species, depth, geometry, circulation, nutrient loading, weather and monitoring.