Wastewater treatment assets in New Brunswick followed a steady ageing trend from 1978 to 2003 when they reached their peak at 19.0 years. Recent investments have reversed the trend downward to 18.4 years in 2007. As a percentage of estimated useful life, the province has followed the growing national average in most years since 1980. The rate for the province stood at 65% in 2007, compared to 63% at the national level.