Get those leaky faucets fixed, strict water usage regulations are coming in 2015 and Rochester officials learned the 200 homes connected to the public water supply would be affected.

The Department of Conservation and Recreation will enforce strict water guidelines when it issues new permits in two years said Patrick O’Neale, vice president of Tata & Howard Water and Wastewater Consultants.

Under the permits, municipal wells that pump more than 100,000 gallons of water per day are subject to conservation restrictions. Though Rochester has no municipal water service, some residents are hooked into a public water main installed and owned by the town of Marion. Water pumped into Marion comes from municipal wells the town owns within Rochester.

The permits are designed to protect water flow in streams and rivers, according to the department of conservation. However, O’Neale said the restrictions put pressure on water suppliers to limit water withdrawals. To study the affect of water use on stream flow and volume the Mattapoisett River Valley Water District Commission installed $100,000 worth of monitoring equipment.

“The information is monitored monthly by an advisory committee. So when the time comes to re-permit we can try to mitigate the impacts to stream flow,” O’Neale said.

Future measures include limiting water use to 65 gallons a day to each person using public water and capping unaccounted for water at 10 percent, which is the different between what is pumped and the amount water that is actually used. Outdoor watering will likely be restricted to one day a week.

“It’s a big change for people in communities used to watering whenever they want,” said O’Neale.

To get ready for the restrictions, the commission wrote a new bylaw they hope to enact before the permits arrive. Residents in Fairhaven, Marion, and Mattapoisett, the towns that comprise the commission, will have to approve the bylaw at Town Meeting. Because some Rochester residents use Marion water voters at Town Meeting will also be asked to vote on the bylaw.

Because the new permits will last 20 years, Rochester Water Commissioner Chair Fred Underhill said town officials should seriously consider where the town would get its water in the future.

“If we substantially increase the amount of water we’re trying to use from Marion, we may find we’re in trouble fifteen or eighteen years from now,” Underhill said.