Rosa Arrabal is among 40 local public officials and businessmen who are caught up in the investigation, which has seen €5 million worth of assets seized.
It is alleged the group issued false certificates to companies who contracted them for waste management, which said a landfill site was legal.
The 36,000 square-meter dumping ground, next to the La Miel River within the protected Pinar y Dehesa del Rio Chillar and Sierra de Tejera, Almijara y Alhama natural parks, is thought to be around 15 years old.
Investigators say the dump is a ‘serious danger to the environment and the balance of natural ecosystems, as well as a significant fire risk.’
It has seen uncontrolled fly-tipping for years, featuring many different dangerous construction and demolition waste.
Because the area is home to a rare flora and endangered species, a wildfire could have disastrous effects on the areas biodiversity.
All of the suspects must now appear before a judge.