Alex Bergstein, a mother of three living in Greenwich, replaced her family’s plastic water bottles with stainless steel a few years ago after becoming concerned about the chemical bisphenol-A, which is used in many food and beverage containers.

She said that she was grateful that state legislators had moved closer to supporting a bill that would phase out the use of BPA, as it is known, from children’s products and certain reusable containers. The bill passed the House of Representatives by a vote of 128 to 14 last month. The Senate may vote on the measure this week. If it passes, Connecticut would be the first state to enact BPA restrictions, according to the National Conference of State Legislatures.
“As a parent I say, if we even suspect there is a risk to our children, and it’s not necessary to our existence, let’s get rid of it and use a safe substitute,” said Ms. Bergstein, 42, a lawyer whose children are 11, 9 and 5.

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Twenty-four states have pending legislation restricting BPA, but with its labeling requirement, Connecticut’s is the toughest, said Sarah Uhl, coordinator of the Coalition for a Safe and Healthy Connecticut, a partnership of organizations backing the legislation. New York’s Suffolk County has also banned BPA from baby bottles and sippy cups, and United States Senator Charles Schumer, Democrat of New York, this month introduced legislation that would ban BPA in containers marketed for infants and toddlers.