A New Methodology for Evaluating Potential for Potable Water Savings (PPWS) by Using Rainwater Harvesting at the Urban Level: The Case of the Municipality of Colombes (Paris Region)
The practice of rainwater harvesting (RWH) is spreading rapidly in urban areas. This article studies the impact of a possible generalization of this practice for municipalities by proposing a new method to quantify the potential for potable water savings (PPWS) by using rainwater harvesting at the urban level. The proposed method is based on the adaptation of an already validated model assessing the PPWS for single buildings and the use of urban databases. Two concepts are introduced: (1) the “building type” that allows gathering all the buildings sharing common features; and (2) the “equivalent building,” which is used to assess the PPWS of a set of buildings (of a same building type) as if it were a single building. In the case of the municipality of Colombes (located in the suburbs of Paris), the method shows that the PPWS by using rainwater harvesting represents about 10% of the total potable water consumption: the residential buildings account for 64% of this potential. This method can be applied to other municipalities with a level of acceptable reliability with regard to the means to be implemented in terms of collecting information.
References
[1]
Coombes, P. Integrated Water Cycle Management in Australia. In Proceedings of the Rainwater Harvesting Workshop, Vancouver, Canada, 31 May 2005.
[2]
United Nation Habitat Programme (UN-Habitat). Rainwater Harvesting and Utilisation; BlueDrops Series (3 books); UN-Habitat: Nairobi, Kenya, 2005.
[3]
K？nig, K.W.; Sperfeld, D. Rainwater harvesting—A global issue matures. Sustain. Water Manag. 2007, 1, 31–35.
[4]
Government of Ontario. Ontario Guidelines for Residential Rainwater Harvesting Systems Handbook, 1st ed.; Government of Ontario: Toronto, Ontario, Canada, 2010.
[5]
American Rainwater Catchment Systems Association (ARSCA). Rainwater Catchment Design and Installation Standards; American Rainwater Catchment Systems Association: Tempe, AZ, USA, 2009.
[6]
Gould, J.; Nissen-Petersen, E. Rainwater Catchment Systems for Domestic Supply: Design, Construction and Implementation; Intermediate Technology Publications: London, UK, 1999.
[7]
Silva-Afonso, A.; Pimentel-Rodrigues, C. The importance of water efficiency in buildings in Mediterranean countries. The Portuguese experience. Int. J. Syst. Appl. Eng. Dev. 2011, 5, 17–24.
[8]
Centre d’Information sur l’Eau. Les Fran？ais et L’eau, 14th ed.; Centre d’Information sur l’Eau: Paris, France, 2009. Principaux résultats.
[9]
De Bellaing, C.M.; Deroubaix, J.F.; de Gouvello, B. Incentives for the Rainwater Harvesting and Use: Local Initiatives and National Effects; LEESU: Champs-sur-Marne, France, 2009. Rapport post doctorat SR-UTIL.
[10]
Government of France. French Order of 21 August 2008 on Rainwater Harvesting and its Uses Inside and Outside Buildings; Official Journal of the French Republic: Paris, France, 2008.
[11]
De Gouvello, B.; Deutsch, J.C. La récupération et l’utilisation de l’eau de pluie en ville: Vers une modification de la gestion urbaine de l’eau ? Flux 2009, 76-77, 14–25.
[12]
Gires, A.; de Gouvello, B. Consequences to water suppliers of collecting rainwater on housing estates. Water Sci. Technol. 2009, 60, 543–553, doi:10.2166/wst.2009.361.
[13]
Guillon, A.; Kovacs, Y.; Roux, C.; Sénéchal, C. Rain Water Re-using for Watering Purposes: What Storage Capacity is Needed and What Benefits for the Sewer Networks? In Proceedings of the11th International Conference on Urban Drainage, Edinburgh, UK, 31 August–5 September 2008.
[14]
Coombes, P.J.; Kuczera, G.; Argue, J.R.; Cosgrove, F.; Arthur, D.; Bridgeman, H.A.; Enright, K.D. Monitoring and Performance of the Water Sensitive Urban Development at Figtree Place in Newcastle. In Proceedings of the 8th International Conference on Urban Storm Drainage, Sydney, Australia, 30 August–3 September 1999; pp. 1319–1326.
[15]
Coombes, P.J. Integrated Water Cycle Management: Analysis of Resource Security. In Water; Australian Water Association: Sydney, Australia, 2005.
[16]
Belmeziti, A. Impact Potentiel de L’utilisation de L’eau de Pluie Dans le Batiment sur les Consommations d’eau Potable à L’échelle Urbaine. Le cas de L’agglomération Parisienne. Ph.D. Thesis, Paris-Est University, Marne-la-Vallée, France, 2012.
[17]
Khastagir, A.; Jayasuriya, N. Optimal sizing of rain water tanks for domestic water conservation. J. Hydrol. 2010, 381, 181–188, doi:10.1016/j.jhydrol.2009.11.040.
[18]
Fewkes, A. Modelling the performance of rainwater collection systems: Towards a generalised approach. Urban Water 1999, 1, 323–333, doi:10.1016/S1462-0758(00)00026-1.
[19]
Herrmann, T.; Schmida, U. Rainwater utilisation in Germany: Efficiency, dimensioning, hydraulic and environmental aspects. Urban Water 1999, 1, 307–316, doi:10.1016/S1462-0758(00)00024-8.
[20]
Appan, A. A dual-mode system for harnessing roofwater for non-potable uses. Urban Water 1999, 1, 317–321, doi:10.1016/S1462-0758(00)00025-X.
[21]
Texas Water Development Board (TWDB). The Texas Manual on Rainwater Harvesting, 3rd ed.; TWDB: Austin, TX, USA, 2005.
[22]
Deutsches Institut für Normung (DIN). Rainwater Harvesting Systems—Part 1: Planning, Installation, Operation and Maintenance; DIN1989-1; DIN: Berlin, Germany, 2002.
[23]
British Standards Institution (BSI). Rainwater Harvesting Systems—Code of Practice; British Standard BS8515; BSI: London, UK, 2009.
[24]
Association Francaise de Normalisation (AFNOR). Rainwater harvesting systems for inside and outside buildings’ use. Norme NF P 16-005, AFNOR: Saint-Denis, France, 2011.
[25]
Belmeziti, A.; de Gouvello, B. Elaboration d’un modèle prévisionnel de développement de la récupération d’eau de pluie dans le contexte de l’Ile-de-France. In Proceedings of the 8ème Congrès International Gruttee, Nancy, France, 26–28 October 2009.
[26]
Ghisi, E.; Montibeller, A.; Schmidt, R.W. Potential for potable water savings by using rainwater: An analysis over 62 cities in southern Brazil. Build. Environ. 2006, 41, 204–210, doi:10.1016/j.buildenv.2005.01.014.
[27]
De Gouvello, B.; de Longvilliers, S.; Rivron, C.; Muller, C.; Lenoir, P. Elaboration of a Dimensioning Tool for Rainwater Harvesting Tanks Adapted to Mediterranean Context. In Proceedings of the 7th International Conference, Planning and Technologies Sustainable Urban Water Management, Lyon, France, 27 June–1 July 2010.
[28]
Belmeziti, A.; de Gouvello, B.; Coutard, O. Evaluating Rainwater Storage and Usage Potential (SUP) at Urban Community Level: Methodology and Application in an Urban Community in the Paris Region. In Proceedings of the12th International Conference on Urban Drainage, Porto Alegre, Brazil, 11–15 September 2011.
[29]
Imteaz, M.A.; Shanableh, A.; Rahman, A.; Ahsan, A. Optimisation of rainwater tank design from large roofs: A case study in Melbourne, Australia. Resour. Conserv. Recycl. 2011, 55, 1022–1029, doi:10.1016/j.resconrec.2011.05.013.
