At the link provided, you can access detailed reports of contamination on the southside of the city. The in-depth series of articles in 1985 written by award-winning journalist Jane Kay of The Arizona Daily Star provide an overview of the serious water contamination issues that afflicted Tucson citizens on the southside near the airport.
Kay had an extensive background with investigative reporting on environmental issues in the state of Arizona.
After the series was published, city and county governments looked more into the severity of water contamination on the southside. Soon after, efforts to clean and regulate water in Tucson were enhanced.