San Bernardino County MS4 Administration Solution Access to this system is restricted to authorized users only, who may enter a valid username and password below. Please address questions/problems to the stormwater program contact for your jurisdiction (visit http://www.co.san-bernardino.ca.us/stormwater/permittees.htm for a list). For general MS4 Solution inquiries, send an Email to stormwater@dpw.sbcounty.gov.