The stolen turf, which was stolen on two separate occasions over three weeks, cost the City more than $4000 to replace.
Mayor Mick Wainwright said the City was taking the thefts very seriously and was working with police to catch those responsible.
“This facility is highly valued by the community and any intentional damage or theft is not only disappointing, it’s unacceptable,” he said.
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The facility, which was opened last year, is the largest accredited synthetic playing fields in WA and is home to the Ellenbrook United Football Club.
Ellenbrook ward Councillor Cate McCullough said the City had increased the amount of CCTV and security patrols in the area, but also needed the community’s help to catch those responsible.
“These types of crimes affected everyone in the community, so I am hoping residents get behind us in our effort to find the offenders,” she said.
“We are asking residents to keep an eye out for any new artificial turf popping up in the neighbourhood and report any suspicious activity to the city or police.”
If you have any information, call the City of Swan on 9267 9267 or Crime Stoppers on 1800 333 000.