HOME DOCUMENT CENTRAL PUBLIC NOTICES & NEWS PAYMENT OPTIONS CONTACT P: (989) 681-2137 Residents Visitors Government Business Calendar Wastewater Treatment Plant PJ McGillis & Al Strouse Facility Operators Phone: (989) 681-3567 Fax: (989) 681-5473 Email: wwtp@stlouismi.com Plant Hours: 7:00am - 3:30pm Address 404 East Prospect St. Louis, MI 48880 Maria Roberson Utility Billing Clerk Phone: (989) 681-2137, ext 2240 Fax: (989) 681-3842 Email: mroberson@stlouismi.com Office Hours: 8:00am-12:30pm, & 1:30pm-4:00pm Address 300 North Mill Street St. Louis, MI 48880 After Hours/Holidays: Contact Gratiot County Central Dispatch for assistance with EMERGENCIES at 989-875-7505. There is a $100 charge for after hours and holiday service calls if the emergency is considered the responsibility of the homeowner. The $100 fee is added to the homeowner's next utility bill. About the Wastewater Plant The St. Louis Wastewater Plant was originally constructed in 1954 as a primary treatment plant. Expansions to the plant occurred in 1978-80 and again in 1998-2001. These expansions and upgrades resulted in the plant to be a state of the art, tertiary-biological-chemical-sand filter system. In 2014, the City needed to further upgrade the plant and received a loan from the State Revolving Loan fund to switch the treatment process from RBCs (rotating biological contactors) to oxidation ditches. When completed in 2015-16, the upgraded wastewater plant provides primary, secondary, and tertiary treatment consisting of a fine screen with vortex grit removal, pre-aeration ahead of the primary clarifiers followed by anaerobic selector basin, oxidation ditches, final clarifiers chlorination, a holding pond and sand filters. All biosolids pass through anerobic digestion and are stored on site prior to land application. The plant is designed to treat a maximum of 4.0 MGD (million gallons per day) with an average day flow of 1.6 MGD. In 2020 the wastewater plant treated 408 million gallons of sewage resulting in an average day flow of 1.118 MGD. A portion of this sewage flow consists of infiltration and inflow (I & I) into the sewer lines through illegal connections, such as storm inlets, sump pumps, footing and downspout connections as well as cracks and failed joints due to the age of the sewer lines. A reduction in these sources of storm drainage and groundwater into the sanitary sewer pipes has been an ongoing process with City maintenance personnel and construction projects. The City must continue to locate and remove these sources of I & I to reduce the impacts of the periodic high flows on the wastewater plant and its treatment ability. The City wastewater treatment plant and collection system includes five pump stations which transmit flows from Pine River and Bethany Townships (two stations), two of the correctional facilities located east of the City (one station), and two stations within the City which collects and transports sewage to the plant. As part of the recent Asset Management Plan, three of the pump stations are being considered for replacement over the next few years. Don't Flush That! Just because the package says "flushable" doesn't mean it's true. Items advertised as disposable and/or flushable do not degrade like toilet paper. They clog pipes, tangle pumps and cause messy sewer backups into streets, businesses and homes. Sewers are designed to dispose of very specific things. Using your toilet for disposal of many modern products will result in blockages. The drains that connect your home to the main sewer are only big enough to carry water, toilet paper and human waste - often no wider than 4 inches. What Not To Flush Baby wipes, disinfectant wipes, moist wipes, etc. Diapers (cloth, disposable, "flushable") Facial tissue Toilet bowl scrub pads Swiffer's Napkins (paper or cloth), paper towels Dental floss Egg shells, nutshells, and coffee grounds Fats, oils, and greases Food items containing seeds and peelings Hair Sanitary napkins, tampons, condoms, or any non-organic material Vitamins, medicine or other pharmaceuticals Wash cloths, towels, rags (any cloth item) Clothing Sheet plastic, or plastic of any kind Cigarette butts What should be flushed? Just toilet paper and human waste. St. Louis Water Department: Only Flush Toilet Paper from MAC TV Network on Vimeo. Documents Wastewater What Not To Flush Sanitary Sewer Tie In Application City Rates and Fees SIGN UP FOR NEWSLETTER Subscribe ADDRESS City of St. Louis 300 North Mill Street St. Louis, MI 48880 PHONE (989) 681-2137 CITY HALL OFFICE HOURS Monday - Friday 8:00a.m. - 12:30p.m. & 1:30-p.m.-4:00p.m. Closed: Weekends & Holidays ADA Compliance Privacy Policy Login © 2005 - 2021 City of St. Louis, Michigan. Powered by Civic Clarity®