Inspectors said the quality of the authority's child protection service was inconsistent, ranging from very poor to excellent.
The high level of staff turnover was cited as one of the main reasons.
Of 214 social worker positions, 86 were unfilled at the end of last month.
The council is increasing its area child protection committee's budget from 52,500 to 243,000 and reviewing all 539 cases on its child protection register.
John Harris, Hertfordshire's director of children, schools and families, described the report as "tough" and admitted there was "no quick fix for long-term problems like recruitment".
Register Now to Continue Reading
Thank you for visiting Children & Young People Now and making use of our archive of more than 60,000 expert features, topics hubs, case studies and policy updates. Why not register today and enjoy the following great benefits:
What's Included
-
Free access to 4 subscriber-only articles per month
-
Email newsletter providing advice and guidance across the sector
Already have an account? Sign in here
