CHAMPLAIN Residents in the village and town of Champlain have been cleared to once again drink from the local municipal water supply. A boil water order, which was changed from a Do Not Drink order Feb. 14, was lifted last Saturday. According to information from the Clinton County Health Department, preliminary testing performed at the village of Champlain water system indicated chlorine injected into the water plan tank was contaminated with a fuel oil. However, no fuel oil related compounds were detected in the tank or distribution system when tap samples were conducted. A trace concentration of methyl tertiary butyl ether, a chemical gasoline additive commonly referred to as MTBE, was detected. The water system was cleaned with a food grade detergent to purge any possible foreign substances which remained. Additional tests were received and all water tests were clean for oil associated petroleum compounds, a department report stated. The tests showed no water lines to the water systems approximately 3,000 users were affected.