Human excrement has been left behind by travellers moving across Wiltshire and Gloucestershire.
A group of travellers initially arrived at the Lower Rec site in Highworth last week.
The town council warned anyone who has an allotment at the Old Golf Course site to not use the water troughs as they have been contaminated.
A sign placed near the Lower Rec site reads: “Do not use this area. The rubbish has been cleared however the human waste remains.
“The Environmental Team at Swindon Borough Council is required to assess the area.”
After Wiltshire Police directed the travellers to leave the site, they moved on to the playing fields next to the village hall in Lechlade on Saturday morning.
Simon Paul, chairman of trustees, said in a Facebook post that there had been ‘unpleasant anti-social behaviour’.
After the travellers left last night he added: “We are aware of human and dog excrement which is a safety hazard.
“We will put up notices but as a minimum children should not be allowed anywhere on the playing field without adult supervision.
“We will try to make the site safe as soon as possible but some facilities may be out of use for some time.”
The travellers have now arrived at the Coln House School playing fields in Fairford.