1. ADEQ (2002) Using gray water at home. Title 18, Chapter 9, Article 7. www.azsos.gov/public_services/title_18/18-09.pdf
2. Al-Jayyousi OR (2003) Greywater reuse: towards sustainable water management. Desalination 156(1):181–192. https://doi.org/10.1016/S0011-9164(03)00340-0
3. Ardern E, Lockett WT (1915) Experiments on the oxidation of sewage without the aid of filters, part III. J Soc Chem Ind 34:937.
4. Betriebs F, Darmstadt P (2005) Greywater recycling. fbr Dialog GmbH Havelstr. 7 A 64295 Darmstadt. www.fbr.deinfo@fbr.de.
5. BSI (2010) BS 8525-1:2010 greywater systems—code of practice. British Standards Institution.