The department shall order closed, any bathing beach where it is established that the following or other conditions pose an imminent threat to public health. The bathing beach shall remain closed until the department determines the bathing water no longer poses an unacceptable risk to public health or safety. A bathing beach may be closed for, but not limited to, the following:

(1)  A violation of minimum water quality standards at a designated bathing beach;

(2)  The presence of sewage sludge deposits or solid refuse;

(3)  Floating solid, grease or scum wastes; or

(4)  Oil or other hazardous material.