The Val Parisis Agglomeration Community is located in the Val d’Oise department (95).
The wastewater treatment system include :
o 758 km of networks (251 km of EU network, 191 km of EP network and 316 km of UN network),
o 36 lift stations,
o 43 buffer basins,
o 7 Storm overflows,
o 12 sand chambers,
o 18 oil separators.
The objectives of the sanitation master plan study are :
o standardise knowledge of the heritage of the region,
o diagnose the collective sanitation, infrastructures in place,
o update some of the outdated sewerage zoning plans and add a pluvial section,
o plan for necessary future investment.
A wide range of services:
- Topographical surveys of 8,200 structures,
- Analysis of 290 km of ITV,
- Continuous rainfall and flow measurements, sampling campaigns, quantification and sectorisation of ECPM and ECPP (30 night-time inspections),
- Modelling of PE and UN systems using HYDRA software under QGIS,
- Proposed action programme for stormwater management, giving priority to alternative techniques.