Aug. 2 editor’s update: Spring Hill Dairy Farm announced that it is closing. For more, click here.

Nearly a month after spring water from a Haverhill company was found tainted with toxic chemicals, gallon-sized jugs of it are still stocked on supermarket shelves across New England, despite a health advisory from state health officials that pregnant women, nursing mothers, and infants should not consume the water.

Last month, as officials in New Hampshire were completing new standards to reduce exposure to per- and polyfluoroalkyl chemicals, part of a national push to tighten their regulation, they decided to conduct a random sampling of bottled water sold at supermarkets in the state, something rarely done.