Update March, 2012: EPA is regulating the municipalities that have plans for disposal and management of stormwater runoff. The municipality of San Juan has submitted, Carolina also. All the municipalities in the metropolitan area submitted and understand that they were subjected to fines. There is a fine of $ 30,000. daily for violation of NPDES permits. The problem is that over 80% of pollutants entering the ocean are coming by water from rain and storm and sanitary discharges. The EPA has taken drastic measures to force municipalities to raise awareness and control of systems that carry rainwater. They are called NPDES - MS4.

During 2007-2009 both, the EPA and the SJBEP have been paying great attention to the issue of pollution from stormwater runoff.  Among the actions taken by the SJBEP are:  offering workshops on the subject; a media campaign educating citizens not to throw pollutants in stormwater sewers; and volunteer activities where the stormwater sewers are marked with a special sign that have an educational message. For its part, EPA is requiring the municipalities to comply with NPDES permits and gives fines to the municipalities violating these agreements or those who doesn