A water conservation notice is in effect for 30 communities following a water main break in Somerville.

New Jersey American Water is hoping to get that notice lifted by Thursday evening. But in the meantime, anyone looking to beat the heat with a hose is advised not to.

Many residents are staying indoors in the air conditioning to stay cool in temperatures nearing 100 degrees. Crews have been out in the sweltering weather to make the repairs.

Crew members tell News 12 New Jersey that they are working in shifts to escape the heat and drinking plenty of water.

Water service in the homes has not been shut off during the repairs, but some residents reported temporarily having brown water.

Towns under the water conservation notice include:

• Bedminster

• Belle Mead

• Bernards Township

• Branchburg

• Bridgewater

• Cranbury

• Far Hills

• Flemington

• Gladstone

• Hillsborough

• Jamesburg

• Kingston

• Lawrence

• Manville

• Montgomery

• Peapack

• Plainsboro

• Pottersville

• Princeton

• Raritan Borough

• Raritan Township

• Readington

• Somerville

• Tewksbury

• Three Bridges

• West Windsor

• Whitehouse

• Whitehouse Station, Bedminster and Bernards Township.