The Trump administration wants to cut the Environmental Protection Agency’s budget by 25 percent, targeting climate-change programs and others designed to prevent air and water pollution.

President Trump — who once called global warming a hoax created by the Chinese — repeatedly vowed on the campaign trail to undo former President Barack Obama’s climate-change policies and to pull out of the Paris Agreement to mitigate greenhouse-gas emissions.

The 23-page 2018 budget proposal would cut the EPA’s budget to $6.1 billion and reduce staffing at the agency by 20 percent to 12,400, Reuters reported, citing sources.

The cash will be diverted to help pay for Trump’s proposed $54 billion hike in military spending — but the cuts could also gut the EPA’s enforcement of environmental rules.

Under the proposal, which was sent to the EPA this week, grants to states for toxic-lead cleanup would be cut 30 percent to $9.8 million, according to the source, who read the document to Reuters. Grants to help Native American tribes combat pollution would be cut 30 percent to $45.8 million.

And an EPA climate-protection program focused on cutting emissions of greenhouse gases like methane that contribute to global warming would be cut 70 percent to $29 million. The proposal would also cut funding for the brownfields industrial-site cleanup program by 42 percent to $14.7 million and would reduce funding for enforcing existing pollution laws by 11 percent to $153 million.

Environmentalists slammed the cuts.

“Slashing the EPA’s budget will be dangerous to our health and the well-being of our children,” said Rhea Suh, president of the National Resources Defense Council.

The Republican-led Congress may fight some of the cuts.