The ACT government is looking at models to operate the service in the future, after Pill Testing Australia confirmed Sunday's Groovin the Moo was the last free trial it would run in Canberra.

Mr Rattenbury said governments needed to come up with a sustainable model for the service to continue.

"We cannot expect them to continue to do that simply out of the goodness of their hearts, there are costs involved in this and between government, festival organisers and potentially philanthropic sources, we need to make a model that actually enables us to continue," Mr Rattenbury said.

Mr Rattenbury also said there was "definitely a place" for pill testing on an ongoing basis.

"I can see a model where we've got the [CBR] NightCrew who operate in Civic, having the pill testing operate alongside that for example on a Friday and Saturday night on a regular basis would really extend that harm minimisation model," Mr Rattenbury said.

"It is not just at festivals people are using these party drugs and we need to provide other options for harm minimisation to be spread out more widely."

The NightCrew, run by St John Ambulance, has helped more than 13,600 people on a night out over the last three years.

Volunteers give out bottles of water and lollipops, provide first aid or give people a safe place to rest or charge their phones.

The service recently received a $1.2 million funding injection from the territory government, securing its future until June 2021.

Mr Rattenbury suggested pill testing could even be funded in the same way as the NightCrew, with a grant from government for infrastructure and volunteers running the service.

PIll Testing Australia's Gino Vumbaca said he was open to the idea but it was not the only avenue the group was exploring.

"I think a more regular service is needed. It's not an unreasonable conclusion to draw that if pill testing is an effective harm reduction strategy on one day of the year in Canberra it will work more regularly," he said.

"People use a variety of pills every day in different venues and it's not feasible to set it up in every venue. You need a fixed location where people can go, then for bigger events you can have on-site testing [like at Groovin the Moo]."

Health Minister Meegan Fitzharris said on Monday the government would make a decision on future funding for the service after the results of an independent evaluation were released.

The evaluation is being conducted by the Australian National University. The government provided the university with $50,000 to carry out the assessment at the festival.

Around 234 festivalgoers participated in the weekend trial, with most of the 171 samples tested containing MDMA.