Raw sewage has been overflowing into Ontario's lakes and rivers at an alarming rate and the government is doing little to stop it, the province's environmental watchdog said Tuesday as she laid out broad changes required to help keep waterways clean. Environmental Commissioner Dianne Saxe outlined her concerns and recommendations in an annual report — called Back to Basics — that looked at the state of the province's waterways between April 2017 and March this year. During that time, the report found that raw sewage overflowed into southern Ontario waterways 1,327 times. More than half of those overflows — 766 — were from nearly 60 outdated municipal sewer systems that combine sewage and stormwater.