Grimonpont water purification plant
The Wattrelos-Grimonpont water purification plant, the largest in the area, was inaugurated on Saturday 8 October 2005. The 56M€ renovation and extension project, agreed on in 2000 and begun in 2001, allows the treatment of waste water from around 15 communities, including Mouscron. The plant has a capacity of 350 000 equivalent inhabitants.
For several years, Lille Metropolitan Council has been renovating and building treatment plants with stricter environmental standards than those covered by the relevant EC water treatment directives. As a result the latest plants e.g. Comines-Pureté and Villeneuve-d'Ascq, now treat carbon, nitrogen and phosphates, as does the Grimonpont plant, thus contributing to the recovery of the Espierre valley and the Roubaix canal. In addition, the plant's construction and operation are subject to a French-Belgian agreement.
(LilleMétropoleInfo, October 2005)
As part of the project to restore the Roubaix canal to full operation, some of the water treated by the Grimonpont plant will be used to top up the canal's water supply with water of high quality. This water will compensate for the water losses in the French and possibly also the Belgian pounds (through evapotranspiration and leakage, also covering the possibility of an occasional breakdown in the water recycling equipment at each lock. The canal will thus achieve the standards required for cross-border navigation. > more on the filter basins
Protection against flooding
Since the Espierre has a very gentle mean gradient, serious flooding occurs in Roubaix, Wattrelos and Leers at 10-year intervals (statistically). This recurring problem is being tackled under another EU-supported project called Urban Water: Sustainable Water Management in Urban Space. The web site (click on project name, left) sets out the objectives of this project regarding the Espierre stream and - incidentally - the Deûle-Escaut waterway.