Increasing the number of drug users given rehabilitation is one of the targets in the county's local area agreement.
The arrests this week of two men on suspicion of murdering Gemma Adams, Anneli Alderton, Tania Nicol, Paula Clennell and Annette Nicholls had not changed the way the council was working.
'We have got to make sure we are carrying on these services and if people need drug treatment then we must see that [the support] carries on.
The council has been working with local agencies to help women who are heroin users to get methadone prescriptions. They have also collaborated with charity the Henry Smith Foundation to give sex workers in Ipswich food vouchers and mobile phone top-ups to encourage them to stay off the streets.
Ms Stevens said the council would be looking for other sources of funding to continue supporting the women.