A facility that is not connected to a public sewer system shall have a written sanitation approval for its sewage system by the sewage enforcement official of the municipality in which the facility is located.
55 Pa. Code § 3800.252
This section cited in 55 Pa. Code § 3800.6 (relating to applicability to specific facility types); 55 Pa. Code § 3800.251 (relating to additional requirements); and 55 Pa. Code § 3800.302 (relating to exceptions for outdoor and mobile programs).