Laundry and textile services, i.e. the hiring of textiles and washing of hired textiles, or washing of own textiles/goods, has environmental considerations connected to the extraction of raw materials for washing chemicals and textiles, the manufacturing of washing chemicals and textiles (such as water and chemical use), the washing process (energy use, chemical use, water consumption), and the use of fossil fuels in distribution. Energy use impacts the environment through global warming, acidification and eutrophication. Chemical use can impact the environment through ecotoxicity and human toxicity. Wastewater can contain contaminants from the textiles (e.g. heavy metals from industrial washing) and residues from washing chemicals. Many plants can still make great improvements in environmental areas by optimizing their consumption of energy, water, chemicals, etc.