California Water Boards' Annual Performance Report - Fiscal Year  2017-18 

REGULATE: NPDES WASTEWATER

MEASUREMENTS  - Data Last Updated on: 

WHAT THE MEASURE IS SHOWING

WHY THIS MEASURE IS IMPORTANT

TECHNICAL CONSIDERATIONS

• Data Source: CIWQS. Period July 1, 2017 to June 30, 2018.
• Unit of Measure: Number of facilities inspected annually, including all inspection types, during FY 17-18.
• Data Definitions: Inspections: include inspections conducted by Regional or State Water Board staff, or US EPA contractors. Facilities Inspected: Count of facilities inspected one or more times during a fiscal year.
• References: Information on the Water Boards' NPDES program
  Public Reports and Data
  Enforcement and Compliance Assurance Information

GLOSSARY

Major Facility

Major municipal dischargers include all facilities with design flows of greater than one million gallons per day and facilities with approved industrial pretreatment programs. Major industrial facilities are determined based on specific ratings criteria developed by US EPA/State.

National Pollutant Discharge Elimination System (NPDES)

The NPDES permit program (Section 402 of the Clean Water Act) controls water pollution by regulating point sources that discharge pollutants into waters of the United States. Point sources are discrete conveyances such as pipes or man-made ditches. Individual homes that are connected to a municipal system, use a septic system, or do not have a surface discharge do not need an NPDES permit; however, industrial, municipal, and other facilities must obtain permits if their discharges go directly to surface waters. US EPA has approved the Water Board's program to issue NPDES permits.

Inspection (Compliance and Non Compliance)

The Regional Board or State Board may inspect the facilities of any discharger at any time pursuant to Water Code, Section 13267. Compliance activities include all activities necessary to determine if discharges are in compliance with waste discharge requirements, NPDES permits, and related enforcement orders. Compliance inspections are classified as either Level A or Level B, with Level A being more thorough.