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===Design Considerations===
It is necessary to ensure that the assimilation capacity of the receiving water body is not exceeded, i.e. that the receiving body can accept the quantity of nutrients without being overloaded. Parameters such as turbidity, temperature, suspended
solids, BOD, nitrogen and phosphorus (among others) should be carefully controlled and monitored before releasing any water into a natural body. Local authorities should be consulted to determine the discharge limits for the relevant parameters as they can widely vary. For especially sensitive areas, a post-treatment technology (e.g., [[HWTS - Chemical - general|chlorination]], see POST, p. 136) may be required to meet microbiological limits.
The quality of water extracted from a recharged aquifer is a function of the quality of the wastewater introduced, the method of recharge, the characteristics of the aquifer, the residence time, the amount of blending with other waters and the history of the system. Careful analysis of these factors should precede any recharge project.
Regular monitoring and sampling is important to ensure compliance with regulations and to ensure public health requirements. Depending on the recharge method, some mechanical maintenance may be required.
===References===
* ARGOSS (2001). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/1926 Guidelines for Assessing the Risk to Groundwater from on-Site Sanitation]. British Geological Survey Commissioned Report, CR/01/142, Keyworth, UK.:Available at: [http://www* Seiler, K. P. and Gat, J.bgsR.ac(2007).uk bgsGroundwater Recharge from Runoff, Infiltration and Percolation.acSpringer, Dordrecht, NL.uk](Book)
* SeilerTchobanoglous, KG. P, Burton, F. L. and GatStensel, JH. RD. (20072004). Groundwater Recharge from RunoffWastewater Engineering: Treatment and Reuse, Infiltration and PercolationMetcalf & Eddy, 4th Ed. (Internat. Ed.). SpringerMcGraw-Hill, DordrechtNew York,NLUS.(Book)
* Tchobanoglous, GWHO (2006)., Burton, F[https://www. Lwho. int/water_sanitation_health/publications/gsuweg3/en/ Guidelines for the Safe Use of Wastewater, Excreta and Stensel, H. D. (2004)Greywater. Volume 3: Wastewater Engineering: Treatment and Reuse, Metcalf & Eddy, 4th Ed. (Internat. Ed.)Excreta Use in Aquaculture]. McGraw-HillWorld Health Organization, New YorkGeneva, USCH.
* WHO (2006). Guidelines for the Safe Use of Wastewater, Excreta and Greywater. Volume 3: Wastewater and Excreta Use in Aquaculture. World Health Organization, Geneva, CH.:Available at: [http://www.who.int who.int/water_sanitation_health/publications/guidelines-on-sanitation-and-health/en/ WHO: Guidelines on sanitation and health - 2018]
===Acknowledgements===
{{:Acknowledgements Sanitation}}