Planned Urban Infrastructure

A real estate project was begun in 2018 by *Innova Dintel Guanajuato*, with 800 "sustainable" houses planned for a 167 ha site (Figure 7), as well as a bridge, or connecting dock [32]. The land and houses in this area have been advertised for sale in 2021, and access roads to this area have also been laid, modifying the natural environment (Figure 7). Local people are concerned by the invasive nature of this project, citing the massive increase in the urban density and the environmental impacts produced by the construction work [33]. Once built, it is feared that these "sustainable" houses will use water extracted from the lagoon, which would cause an imbalance in the system. Furthermore, regulations are

needed to ensure that wastewater is not discharged into the sea or the lagoon without proper treatment.

**Figure 7.** The area of the urban project in La Mancha (Area A in Figure 1): (**a**) in 2017, before construction (adapted from Google Earth); (**b**) in 2021, with new roads (adapted from Google Earth); (**c**,**d**) some of the new houses in the area (adapted from [34,35], respectively).
