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Wastewater Treatment
Sewer System
Pretreatment and Pollution Prevention
Meetings and


Effluent Quality

Monitoring Program
The quality of the effluent is monitored in accordance with the program specified in the District’s NPDES permit. The purpose of the monitoring program is to document the short and long term effects of the discharge on the receiving waters and to assess the overall treatment plant performance.

NPDES Permit CA0048160 and WDR Order No. R3-2010-0012

Laboratory Testing
The program consists of daily, weekly, monthly, quarterly and annual testing of the influent, effluent, biosolids and receiving water. All testing is done in accordance with EPA approved test procedures. All of the routine tests are performed by our in-house state certified laboratory personnel.


Reporting Program
The District must report all of the results of its self-monitoring program to the Regional Water Quality Control Board and the EPA.

NPDES 2012 Annual Monitoring and Reporting Report
NPDES 2013 Annual Monitoring and Reporting Report
NPDES 2014 Annual Monitoring and Reporting Report
NPDES 2015 Annual Monitoring and Reporting Report

Emergency Contact Information
For sewer spills or open man hole covers call 805.967.4519.
Board Meeting Information
The GSD Board of Directors meets the 1st and 3rd Monday of every month at 6:30 pm at the GSD Board Room at One William  Moffett Place