Several big summer music festivals will not have drug testing this year, according to New Zealand's main drug checking agency for events.

KnowYourStuffNZ has confirmed seven upcoming festivals - which they had previously attended - had declined their services.

Rhythm and Alps general manager Harry Gorringe says they're expecting about 10,000 people each day.

He says it's a shame there'll be no testing - but they'll be working to make it as safe as possible.

"We have medical staff, security staff, police on site to maintain and watch the intoxication levels of patrons."

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