Since the beginning of gas extraction (1992) over 13 billion cubic meters of gas have been produced in the Voelkersen field (near Bremen, Lower Saxony) by RWE Dea AG an international oil and gas company headquartered in Hamburg. The firm has applied hydraulic fracturing, (short fracking, extracting natural gas from shale rock), which creates contamination of surrounding water sources. The contaminated water must be removed and stored safely. For doing so, the RWE Dea has build a 22 km long waste water pipeline close to Voelkersen. This pipeline passes through a water conservation area. Water containing benzene has leaked through for a long time from these waste water pipes. After 10 years of usage, the pipeline plastic can no longer stay intact and starts leaking benzene. In Novermber 2011, an anonymous whistle blower the local branch of Friends of the Earth Germany about the leaking of benzene from the pipeline. The subsequent investigations revealed that benzene leakes from the pipeline at nearly every measuring point. Later another anyonmous tip revealed that not only benzene but also mercury leakes from the pipeline. These incidents and two fracking related earthquakes with magnitudes between 2,5-2,8 in 2011/2012 have created a massive mobilization against fracking in the region. Local initiatives (http://www.nofracking.de/; Gegen-Gasbohren.de), local and national environmental justice organisations (e.g. Greenpeace), political actors (Alliance 90/The Greens), and media (e.g. Weser Kurier) mobilized against fracking. Many of them in collaboration with each other. The public scrutinizing of the waste water line at the edge of the water reserve in Voelkersen has had some success. The pipeline and similar ones in Lower Saxony have been removed. All contaminated areas will be rehabilitated. The compression of the reservoir water in the water protection area has been (temporarily) stopped. Flaring an open flame was stopped, and instead, a closed system is used.