Aerzen's AERprocess dissolved oxygen control is an integrated solution for controlling DO concentration and blowers in an activated sludge...
The Metropolitan St. Louis Sewer District will pay about $25.6 million in refunds or credits to its customers as a result of a settlement reached in a 1993 lawsuit.
A state court ruled that a 1992 increase in the wastewater user charge portion of MSD customers' sewer bills was illegal.
Residential customers who live at the same address as they did in 1992-93 will receive an average of $43. Commercial and industrial customers will receive a refund in proportion to their use of the system.
St. Louis-based Metropolitan St. Louis Sewer District has about 435,000 customers in the City of St. Louis and four-fifths of St. Louis County.