55 Pa. Code § 3490.361
The county agency shall arrange for or provide protective services for children and their families only through agencies that comply with § § 3130.21, 3130.39 and 3130.40 (relating to responsibilities of county executive officers; services and facilities which may be used; and delivery of services through other service providers).
This section cited in 55 Pa. Code § 3490.362 (relating to licensure requirements for persons providing services arranged or provided by the county agency).