For years, people living at the park, home to a little more than 1,000 residents in about 230 units, have suffered from a variety of health problems. They have varied from persistent rashes and hair loss to kidney disease like Campos Ochoa’s and even cancer — that residents and their advocates say may be caused by contaminated water.

In 2019, the U.S. Environmental Protection Agency found levels of arsenic in the park’s water as high as almost 10 times the allowable limit. Arsenic, which is naturally occurring, has been linked to those ailments as well as an array of other severe and chronic symptoms.