It comes after 36 months of dry conditions and low rainfall, and on the back of advice from the Bureau of Meteorology that Tasmania could experience low levels of rain this winter.

The restrictions were put in place from Monday, January 20 until Tuesday, March 31.

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"Although these sorts of measures are a regular occurrence in other parts of Australia, this is the first time such widespread restrictions have been necessary for Tasmania," TasWater community stakeholder and customer relations department manager Ruth Dowty said.

"What we're asking people to do is to conserve non-essential water use."

Scamander has been on stage three water restrictions since early this month, while stage one restrictions were introduced in the greater Hobart area in December.

The only service areas now exempt from water restrictions in Tasmania are the Circular Head, King Island, West Coast and Huon Valley council areas.

Among the places to have stage one restrictions introduced are Launceston, Deloraine, Campbell Town, Bicheno, Scottsdale, St Helens, Hadspen, Longford, Beauty Point and Low Head.

Restrictions at Bridport will be upgraded to stage two, as will those at Orford, Triabunna and Swansea, while Coles Bay restrictions will remain at stage two.

For residential gardens, stage one restrictions require people to only use manual watering systems between the hours of 6am-8am and 8pm-10pm, while automatic watering systems can only be used between 12am-4am.

When washing vehicles, a bucket or high-pressure cleaning device or commercial car wash can be used at any time but a handheld hose with a trigger nozzle can only be used for pre-rinsing and rinsing at home.

Dorset mayor Greg Howard said it wasn't unusual for stage two restrictions to be implemented at Bridport but added that the restrictions placed on other towns in his municipality were "most unusual".

"I've been around a couple of the rivers this morning, the Great Forester and the Brid," Cr Howard said. "And it looks to be pretty reasonable flows in both of those rivers, to be fair."

"I've seen the rivers lower than that and we haven't been on restrictions.

"So I don't know whether [TasWater] bothered to actually come up and just see how much water there was in the rivers."

Meander Valley mayor Wayne Johnston said people living in urban areas had to realise there was a need for them to be "easing up on water, the same as what the farmers [are doing] as well".

To see the full list of restrictions for your community, visit the TasWater website.