DESCRIPTION - Historical Bacteriological Water Quality Data

(All historical data is contained in the text files for each of the years listed below. Each file can be saved to your personal computer and then imported to a suitable spreadsheet or database program. Please refer to your software documentation for instructions on importing text files.)

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Historical Bacteriological Water Quality Data - 2012

Coastal Storm Drain Outfall Program

The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, issued by the San Diego Regional Water Quality Control Board to Orange County and the incorporated cities of South Orange County, requires routine bacteriological monitoring of coastal storm drains and their respective ocean receiving waters. Pursuant to these requirements, a monitoring program was developed by the County and approved by the Regional Board. Samples are collected weekly during dry weather from the major storm drains, and in the surf zone 25 yards upcoast (northerly direction) and 25 yards downcoast (southerly direction) of the respective drain-ocean interface. The intent of this monitoring is to evaluate the impacts (magnitude and trends) of urban runoff to the coastal zone.

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Coastal Storm Drain Outfall Program - 2012