Before and after the event there was concern over the sponsorship of the Run For Water by Dow Chemical, whose sponsorship of this event has been described as "the ultimate in greenwashing", given Dow's ownership of Union Carbide, their refusal to clean up the Bhopal site, plus their direct responsibility for groundwater poisoning incidents in Morrisonville, Louisiana and the Tittabawassee River in Michigan. Their much-publicised water filtration plants in India have failed because the local population cannot afford to replace the expensive high-tech filters.