Former Southern Water chief executive Matthew Wright is charged with conspiracy to defraud the Environment Agency and the water regulator Ofwat over an alleged plan to manipulate water quality and wastewater testing. Multiple outlets report that Wright faces the charge alongside three other former Southern Water employees. The allegation centres on conduct described as involving fraud and dishonesty at a high level, with the case tied to how compliance checks and test results were influenced.

According to reporting that includes detail from the Environment Agency, the alleged period of wrongdoing runs between 2012 and 2017. The regulator says the defendants allegedly conspired to create artificial “no-flow” events at wastewater treatment works, which it claims affected compliance testing outcomes.

One outlet also reports that a summons issued last year and that Wright previously brought a legal challenge to the move. The accounts agree on the basic nature of the charge—conspiracy to defraud—and the core allegation regarding manipulation of testing results connected to regulatory compliance.