Welcome to the City of Mattoon, Illinois

CITY OF MATTOON Water Quality Update – August 25, 2025 Current Sample Sample collected on August 21st showed non-detectable levels of harmful algal bloom neurological toxin in the drinking water at 0.068 ppb which is considered non-detect under the EPA recommended advisory levels of .30 ppb. We will continue to sample per-EPA guidelines. The next sample date as recommended by the IEPA was taken on Monday, August 25th. Results will continue to be posted on the City’s website. PAST SAMPLES Samples collected on July 16th showed harmful algal bloom neurological toxin in the drinking water at .215 ppb which is [...]

Notice: Pavement Replacement and Pavement Patching There will be construction to replace the pavement and curb & gutter on Remington Road and Swords Drive. Construction will begin on August 25, 2025. Remington Road will be closed east of Swords Drive during construction. Swords Drive will always have at least one lane open during construction. All work is dependent on weather conditions. We will make every effort to maintain access to your property throughout the duration of the project. If you have any questions or concerns about the project, you can contact: City of Mattoon David Clark, PE- Public Works Director [...]

WARNING - A harmful algal bloom, which can release neurological toxins, continues to indicate a presence at Lake Mattoon. Out of an abundance of caution, the beach at Lake Mattoon is closed until further notice, pending additional test results from sampling taken today. Residents should avoid contact with the water. The City has contracted for treatment of Lake Mattoon; however, due to the low dissolved oxygen levels currently in the water, spraying has been postponed until conditions are favorable to do so.   A PDF Copy of this notice can be found here.