This was reported on the website of the regional prosecutor's office.

“The Perm Interdistrict Environmental Prosecutor’s Office, with the involvement of specialists from control and supervisory authorities, based on numerous publications on the Internet, organized a check on the fact that the water in the Yegoshikha, Danilikha, Iva and Kama rivers was colored green,” the statement says.

It is clarified that for this purpose, samples of wastewater will be collected, and resource supplying companies - PJSC T Plus, LLC Perm Grid Company - will be asked for information on permits for the use of water bodies for discharging wastewater.

Earlier, a criminal case was opened in the Kirov region on the fact of pollution of the Chernianitsa river.