ENGINE oil has been dumped in a pond near a community centre, threatening wildlife.
The water, within the grounds of Douglas Tilbe House, was polluted by the black liquid.
A Welwyn Hatfield Council officer spotted the problem and contacted the Environment Agency.
It is believed someone may have broken into the site off Hall Grove, WGC, to gain access to the pond.
An agency spokesman said: “An amount of oil and manhole covers were found nearby.”
“There is a history of problems at this site.
“The pond isn’t connected to the nearby Hatfield Hyde Brook.”
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