The meeting was to discuss a draft law to bolster protections against pesticides and other dangerous chemicals.
Expanded plantations and mining and plans for massive hydropower dams have given rise to concerns for villagers.
Ek Sonn Chan, the head of Phnom Penh’s water authority, says he wants to get clean water to Cambodians beyond the capital.
Seeing Gulf Coast oil spill, environmental and other groups in Cambodia say the country needs to do more to safeguard its environment.
The award will be conferred to the Phnom Penh Water Authority during World Water Week in Stockholm, which begins Sept. 5.
It is not uncommon for companies to pay bonuses for concessions here, but what happened to that money remains unknown.
Villagers here say the dams and the power they generate are not worth the cost.
Cambodian officials in London have baulked at their challenge to openly debate environmental watchdog Global Witness.
Experts have singled out plans for two mainstream dams as the greatest threat to the productive inland fisheries of the Mekong region.
The Global Witness report says sand dredging has negative impacts on the environment.
The locals told investigators that the dredging already has damaged Cambodia's coastal ecosystem.
Global Witness reported that at least 790,000 tons of sand from the coast are monthly shipped out.