CLIFTON — Authorities say that elevated levels of lead have been detected in drinking water in some buildings and homes in a northern New Jersey water system.

The Passaic Valley Water Commission said in a statement on Thursday that monitoring revealed the higher levels in Clifton, Passaic, Paterson and Prospect Park.

The commission says it's correcting the problem, including by replacing lead lines in the system and testing regularly.

But it suggests that residents consider purchasing bottled water or using a filter.

The commission did not say how high the lead levels are.

The commission was one of nearly 1,400 that an Associated Press analysis of federal data found exceeded the U.S. lead standard at least once between Jan. 1, 2013, and Sept. 30, 2015.

Also on New Jersey 101.5:

Copyright 2017 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.