Sir George visited Southern Water's Waste water Treatment Plant at Fullerton, just south of Goodworth Clatford.
The object of the visit was to enable Southern Water to show Sir George the measures they are taking to reduce carbon emissions.
"I was impressed to find out that the plant is self-sufficient in energy - and that at times it exports surplus electricity to the grid. The Combined Heat and Power plant on the site, built in this country, converts the methane gas from the sewage treatment plant into energy, which in turn supplies the power the plant needs. The company plans to meet 20% of its energy requirements from renewables by 2020, as opposed to some 10% today. They currently spend some £26m per annum on electricity - one of their major outgoings - and they are doing all they can to contain this."
Sir George said he was also struck by how few people worked on the site. "At any point in time, there is a maximum of three people on site."
Sir George was shown round by Les Bond, Southern Water's Commercial Director; and by Martin Ross, Southern Water's Principal Energy Engineer.
Sir George asked whether there would be sufficient capacity at Fullerton to cope with the growing population of Andover. "I was told that the current capacity of the plant was 360 litres per second, and this is being increased to 450. The contract for this expansion is due to finish early next year. They are confident this will cope with the planned expansion of the town."
Sir George said that, up to a few years ago, he was getting complaints about smells from villagers in Goodworth Clatford. "Since they stopped spreading lime on the site, there have been no complaints."