WESTFIELD, NJ — If you noticed your tap water smelled a bit like a trip to the town pool for the past two months, you weren’t imagining it.

New Jersey American Water, which supplies water to customers in the town, this week announced it had changed its treatment process to one using “free chlorine residual” so it could perform annual maintenance.

“Some customers may have noticed a slight chlorine taste and odor in their water,” the statement said.

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On Monday, that odor should go away, the company said, as New Jersey American Water will return to disinfecting its water with chloramines. Chloramines, the CDC says, kill germs in drinking water while keeping it safe.

The change applies to communities, which New Jersey American Water services in five northern and central New Jersey counties, including 20 municipalities in Union County.

New Jersey American Water has used chloramines since the 1980s, the company said.