Drinking Water

To protect public health and safety, and verify compliance with State and local codes and regulations, Environmental Health Division Drinking Water Program staff perform inspections, issue permits and review water sample results for small drinking water systems in Ventura County.

The Drinking Water Program oversees the regulation of the following water systems:

  • Individual Water Systems (1 to 4 service connections)
  • State Small Water Systems (5 to 14 service connections)



Charles Genkel



Sean Debley


Program Specialist:

Rebecca Lustig


Individual Water Systems- 1 to 4 service connections and serves less than 25 individuals

Individual water supplies must submit a Certification of Water Quality application along with appropriate fees as established by the County Board of Supervisors. Individual water systems are subject to a water quality analysis review and inspection. The Certification is valid for two years from the date of approval. The Certification of Water Quality application must contain the following documents:

  1. A completed Certification of Water Quality Application. Certification of Water Quality form
  2. Water quality analysis (see page 2 of Certification of Water Quality Application).

            »Water samples must be analyzed by a State Certified Laboratory. A list may be found here: Approved Laboratory List

            »State Certified Laboratory personnel must collect the water samples for analysis.

            »Water quality results must be sampled less than one year from the time of submittal.

            »Provide chain of custody documentation with the analytical results.

  1. A plot plan, drawn to scale, identifying the water well, all water lines, water tanks, all structures, septic systems, animal pens, etc.
  2. If the water well is shared, a shared water well agreement which must be recorded
  3. A water well pump test report approved by Ventura County Public Works Agency, Groundwater Resources staff.
  4. Well Completion Report (also known as Water Well Driller’s Report or Well Log). The California Department of Water Resources (DWR) maintains these reports.

State Small Water Systems- 5 to 14 service connections and serves less than 25 individuals

The California Health and Safety Code Section 116275 (n) defines a State Small Water System as: “a system for the provision of piped water to the public for human consumption that serves at least five, but not more than 14, service connections and does not regularly serve drinking water to more than an average of 25 individuals daily for more than 60 days out of the year.” State small water systems require an annual permit to operate and are inspected for construction and maintenance compliance. They are also required to submit bacteriological and chemical water analyses for water quality monitoring.

An Application for Permit to Purvey Domestic Water must be completed for all new State Small Water Systems, and all existing State Small Water Systems making changes, modifications, alterations, and/or additions to:

  • Source of water supply
  • Method of treatment
  • Distribution system
  • Additional service connections
  • Change of ownership

Application for Permit to Purvey Domestic Water

The Ventura County Board of Supervisors approved a revision to the Ventura County Waterworks Manual (VCWWM) (2ndEdition) on September 14, 2014. The manual includes standards that apply to all water purveyors, including State Small Water Systems under permit with Ventura County Environmental Health Division. Water purveyors must have an accepted Water Availability Letter, or WAL, on file with the Ventura County Public Works Agency before any will-serve letters will be accepted by that purveyor for building or discretionary permits.  Requirements in the VCWWM are enforced by the Ventura County Public Works Agency, Land Development Services.

Public Water Systems - 15 or more connections, or serves 25 or more individuals

A Public Water System is a water system which has 15 or more service connections, or regularly serves at least 25 individuals daily at least 60 days out of the year. Public water systems are permitted and regulated by the State Water Resources Control Board, Division of Drinking Water. If your water system serves 25 or more people at least 60 days out of the year, you are required to obtain a permit to operate from the State, even if you only have one service connection.

Helpful Water links