Water is now more expensive for nearly 80,000 water customers in Halifax, where rates have gone up by nearly nine per cent.

The Nova Scotia Utility and Review Board estimates the average residential customer will be paying 8.7 per cent more starting with their next bill. The rate jumped on Monday.

Another hike of nearly 13 per cent is coming next April.

A look back: Halifax water bills

2002: $362.28 per house

2007: $486.56 per house

2012: $642.84 per house

Those numbers are based on annual water consumption of 188 cubic metres but will vary depending on water usage.

The Halifax Water Commission said the money will be spent replacing aging pipes.

Provincial regulators will not allow the water service to charge more for stormwater costs. Instead, the Halifax Regional Municipality will assume responsibility, about $3 million per year.