originally posted on September 15, 2016

A boil water advisory has been issued for some residents of St. Johns and Duval counties.

JEA issued the precautionary advisory after a water main break in the area of 6322 Racetrack Rd. There is no estimated time of restoration.

A precautionary boil water advisory is issued when there is a possibility that the water pressure in the system dropped to such an extent that bacteria or foreign matter could have entered the system, according to the JEA website.

Customers in the advisory areas should bring water to a rolling boil for a minimum of one minute prior to using it for drinking, food preparation or cooking.

It is also recommended that customers flush water lines for three minutes after water returns in order to remove any air and possible sediments from the lines, the website says.

The advisory is for the customers in these areas:

■ Nocatee (including residents, businesses, and schools)

Bartram Springs Community — South of 14538 Cherry Lake Drive W and 14499 Cherry Lake Drive E

Bartram Springs Elementary School

The Reserve at Bartram Springs

Cypress Trace Community

Businesses at the Promenade Plaza — Everest Lane

Racetrack Road —East of Bartram Park Boulevard to Philips Highway (US1)

People can call customer service at 904-665-6000 for more information.