(NEXSTAR) -- Environmental groups and Democratic lawmakers say delays at the Environmental Protection Agency are putting Americans’ drinking water at risk, accusing the agency of withholding critical public health information about PFAS chemicals. Rep. Chellie Pingree, D-Maine, said the EPA has failed for months to release a report on PFNA, a type of PFAS contaminant. PFAS, often called “forever chemicals,” are man-made substances found in air, groundwater and drinking water across the country. “There is no legitimate reason for this delay,” Pingree said. “This isn’t just a few states," she added. "Every state has these impacts.” Pingree sent a letter last month to EPA Administrator Lee Zeldin demanding an update, but she said the agency has not responded. She argues the government shutdown is hardly a viable excuse. In a statement, the EPA cited ongoing litigation as the reason for the delay and said “the Trump EPA is committed to addressing PFAS and ensuring that regulatory compliance is achievable.” In May, the agency upheld Biden-era drinking water regulations on two PFAS chemicals, PFOA and PFOS, but said three others — PFHxS, PFNA and GenX — remain under legal review. Pingree said she worries the agency is bowing to industry pressure. “We’re just worried that this follows a pattern of this administration being … bullied by the industry that, of course, doesn’t want to have to deal with this chemical,” she said. Environmental advocates also accuse the EPA of ignoring clear scientific evidence. Kyla Bennett, a former EPA scientist who now works with Public Employees for Environmental Responsibility, said PFAS exposure can cause developmental issues in children, obesity, cholesterol problems and thyroid disorders. “My fear is that with these people running the agency, the American people are going to start to get sicker and sicker,” Bennett said. She described the environment for current EPA scientists as “hostile.” Rep. Debbie Dingell, D-Mich., who co-chairs the bipartisan PFAS Caucus, is also sounding the alarm. She accuses the EPA not only of delaying the PFNA report but of slowing PFAS cleanup work at military bases across the country. Dingell joined a bipartisan group of lawmakers who sent a letter of concern to the Defense Department last month. She also plans to continue pressing the issue with Trump administration officials. “I’m going to be relentless in pushing for action,” she said.