City of Mobridge, South Dakota

City of Mobridge, South Dakota Official Website.

Wastewater Treatment Plant

Contact Information:
Don Blankartz and Dean Schilling
Treatment Plant: (605) 845-3243
Business Hours: Monday - Friday 8:00am - 5:00pm

1401 Lake Front Drive
Mobridge, SD 57601

The City's wastewater plant treats an average of more than 350 thousand gallons of wastewater daily.

The treated water is discharged back to the Missouri River. The plant has a capacity of 0.640 million gallons per day.

Wastewater is collected from nearly 1500 customers and delivered to the Wastewater Treatment Plant through a 20 mile network of sewers ranging in size from 6" to 15". The system also includes 4 wastewater pumping stations.

The wastewater treatment plant provides secondary treatment of the community's wastewater prior to its discharge into the Missouri River. The plant utilizes pretreatment, flow equalization, primary and final clarification, trickling filters, chlorination and dechlorination. Aerobic sludge digestion and land application of sludge is employed.  

What Not to Flush

Here are some things you don't want to put down the drain:

Never pour grease down sink or into toilets!
Too often, grease is washed down into the plumbing sysytem, usually through the kitchen sink, which will stick to the inside of sewer pipes. Over time, the grease can build up and block the entire pipe. Pour grease into a can (an empty coffee can works great), keep it in the refrigerator so the grease can solidify and dispose of it in the trash.

Use your garbage disposal sparingly!
Never use your garbage disposal as a substitute for the trash can. Scrape grease and food scraps from trays, plates, pots, pans, utensils, grills and cooking surfaces into a can or trash for disposal. Be especially careful with pasta, potatoes, and other starchy foods. Starch and water make paste, which can plug pipes. Be even more careful with what goes down the kitchen drain if you don't have a disposal. Put strainers in sink drains to catch food scraps and other solids, and empty the strainers into the trash for disposal.

Never flush baby diapers down the toilet!
Even if large objects like this make it to the sewer main, they can cause blockage in the sewer main or plug city pumps.

Never plant trees over your sewer service line!
Roots are the cause of service line blockages. If you have any roots in your sewer service line, the grease, food waste, and large objects just mentioned are even more likely to cause blockages.

Never dump kitty litter down the drain!
Many of these products contain clay which will narrow the opening of your sewer pipe. Eventually it may plug your sewer pipe.

Use sewer pipe cleaning chemicals carefully and sparingly!
Follow label instructions closely to avoid dangerous fumes, skin and eye injury, and pipe and fixture damage. Proper care of your home sewer pipes will decrease the need for chemicals. Fats, oils, and greases aren't just bad for your arteries and your wasteline; they're bad for sewers, too.

The maintenance of internal plumbing and sewer service lines is the responsibility of the property owner. The City is responsible for maintenance of sewer mains only. If sewage is actually flowing into your home through a floor drain, contact the Water Department immediately at (605) 845-2102 as there may be an obstruction in the sewer main.

Sewer Back-Up Emergency/After Hours Emergency 
(605) 845-5000, Mobridge Law Enforcement Office 

News & Updates

Mobridge Comprehensive Plan
Posted on 08-06-2019

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Special thanks to Carissa Aberle Photography for providing the wonderful bridge pictures on this website.

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