An ACT government document says diesel is being used to save money, although the practice creates deep troughs beside playing fields which, according to local sporting organisations, endangers players.

Across the border, Queanbeyan City Council has also stopped using diesel after receiving advice from the NSW Environment Protection Authority (EPA).

The concerns come after a survey of grounds commissioned by the ACT government returned fantastic results.

Their overall quality was marked at 100 per cent. Maintenance and cleanliness received a 99 per cent rating, and the absence of litter 96 per cent, while the overall management of public sports grounds and neighbourhood ovals was given a 94 per cent rating.

Opposition sport and recreation spokesman Steve Doszpot said many junior sporting clubs had voiced their concerns about the diesel line markings.

"I've been campaigning for the past 18 months and have had discussions with clubs from across all football codes, as well as cricket and softball," Mr Doszpot said.

''These fields will require extensive work when the diesel damage becomes too great.

''How can it be too much to pay to ensure player safety and parents' peace of mind when their kids take to Canberra grounds on weekends?''

A Cricket ACT spokesman said his organisation had never been in favour of diesel line markings.

Capital Football chief executive Heather Reid said soccer clubs would like an alternative to fuel used, particularly on fields used for multiple sports, from soccer to rugby and ultimate frisbee.

She said it determining who was responsible for white paint markings could become difficult, especially as white paint had to be reapplied every fortnight, as against a few times or even once a year.

Sport and Recreation Minister Andrew Barr said his office was not aware of a diesel line marking being linked to a specific injury or incident in Canberra.

''Annual soil testing has shown no negative impact to soil chemistry,'' Mr Barr said.

''Sport and Recreation Services partners with any sport who want white line marking by doing the initial survey and first white line marking of a season.''

Queanbeyan recently stopped using diesel for markings and started using white paint instead.

However, there is some confusion about the advice it received.

Queanbeyan mayor Tim Overall said a NSW EPA representative had advised the council not to use diesel, because some of its grounds were near waterways. The EPA said it had not officially given this advice to the council.