*Residents in Springfield can breathe easier* as state environmental officials confirm Helmer Creek is safe after an unnaturally bright green hue sparked a weeklong investigation.

The discoloration first caught the attention of the Calhoun County Sheriff's Office on Tuesday, March 31, when social media posts began circulating photos of the creek running through the city and feeding into the Kalamazoo River.

The Calhoun County Sheriff's Office said that's how they first learned of the discoloration. They said on Wednesday that the color had "significantly" dissipated since the post was made.

Springfield officials and the Michigan Department of Environment, Great Lakes, and Energy asked the community to avoid Helmer Creek until further notice. By Thursday, April 2, EGLE determined the water is safe and there is no further public concern about the water quality.

Drones Trace Source to Storm Sewer

Chaz Wilkey, the Springfield Director of Public Works, said crews were in the area investigating Wednesday. He surmised someone may have dumped green dye into a nearby storm sewer.

Crews used drones to trace the full path of the discoloration to identify and potential origin points. The technology allowed investigators to follow the green hue downstream and back toward where it entered the water system.

The cause remains officially unknown. Authorities have not yet disclosed what specifically caused the discoloration.

The sheriff's office did not specify what was causing the color.

Anyone with information related to the incident was asked to contact the Calhoun County Sheriff's Office at 269-781-0880 or provide an anonymous tip through Silent Observer at 269-964-3888.

Timeline of Events

  • Tuesday, March 31: Social media posts begin circulating photos of unnaturally green Helmer Creek
  • Wednesday, April 1: Calhoun County Sheriff's Office emergency management personnel arrive on scene. Springfield and EGLE ask residents to avoid the creek
  • Wednesday, April 1: Investigation crews deploy drones to trace the discoloration path
  • Thursday, April 2: EGLE confirms water is safe. Color has significantly dissipated since initial reports
  • Thursday, April 2: Officials continue investigating but have not announced a cause

Community Impact

The green hue spread visibly through Helmer Creek, which runs through Springfield and feeds into the larger Kalamazoo River watershed. Residents who use the creek for recreation or who rely on it for local wildlife habitat expressed concern about what might have caused such an unusual change.

Very worrisome Springfield residents avoiding Helmer Creek after possible contamination

The color eventually dissipated as crews worked the area. By Thursday afternoon, the creek appeared largely back to normal.

Ongoing Investigation

Investigators continue searching for the source of the discoloration. While the water has been deemed safe by EGLE, officials have not ruled out further testing to determine exactly what caused the green hue.

The Calhoun County Sheriff's Office remains available for tips from residents who may have seen suspicious activity near the creek or storm sewers in the days leading up to the discovery.

Sources

WWMT - https://wwmt.com/news/local/helmer-creek-water-found-to-be-safe-after-city-of-springfield-egle-probe-into-green-hue-environment-great-lakes-energy-calhoun-county

WZZM 13 - https://www.wzzm13.com/article/news/local/helmer-creek-calhoun-county-bright-green-creek-safe/69-18d7687a-e323-48dc-8a48-418ebec7a096

MLive - https://www.mlive.com/news/kalamazoo/2026/04/discolored-michigan-creek-mystifies-officials.html