Water bosses whose companies dump sewage in the UK’s waterways should have their bonuses reined in, the head of regulator Ofwat has said. In a letter to company boards, David Black said they need to ensure chief executives are not given bonuses that “reward poor performance”. “Companies’ performance in some areas, most notably on the environment, risks eroding trust and confidence in the sector,” he wrote in a letter sent on Friday. “We therefore expect companies to ensure that these outcomes are reflected in performance-related pay for executive directors, including recognition of poor performance and any non-compliance with regulatory and statutory obligations.” In January, a report from MPs on the Environmental Audit Committee found that only 14 percent of rivers in England meet food ecological status. It placed blame on the Government, regulators and water companies for allowing “a Victorian sewerage system to buckle under increasing pressure”. The letter from  …