Air quality: Particulate matter (PM10, PM2.5), Nitrogen dioxide (NO2), Sulfur dioxide (SO2), Ozone (O3), Carbon monoxide (CO)
Water quality: pH, Dissolved oxygen (DO), Biochemical oxygen demand (BOD), Chemical oxygen demand (COD), Total suspended solids (TSS), Fecal coliform
Soil quality: Soil pH, Soil organic matter, Heavy metal contamination
Biodiversity: Species richness, Population abundance, Habitat quality
Waste management: Waste generation rates, Waste composition, Recycling rates, Illegal dumping incidents
Energy consumption: Electricity usage, Fuel consumption