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Who owns the water service line in Simi Valley, CA

Which part of the pipe is yours

your buildingproperty linesidewalkstreetmain
The thick length is yours.

If something’s wrong

Who to call first about the water service line

BelowGrid has no first-call guidance on file from Simi Valley about the water service line.

The documents this answer is built on

Who is responsible for which part

The water answer in Simi Valley is the opposite of the sewer one, on the same property. Ventura County Waterworks District No. 8, whose ordinance is printed in the City's own code, states plainly that "the District has jurisdiction and maintains the water system up to and including the water meter that provides service to a property", and that "all piping beyond the water meter, including backflow prevention assemblies, shall be the responsibility of the customer". So the District carries the service line to and including the meter, while the City's sewer chapter carries none of the lateral. One address, two utilities, and the line drawn in two different places. This is Simi Valley's own statement.

Simi Valley
The water system up to and including the meter. Section 6-15.04 of the Simi Valley Municipal Code, which prints Waterworks District No. 8's own ordinance, gives the District jurisdiction and maintenance "up to and including the water meter that provides service to a property". The meter itself is on the District's side of the line, which is the detail most often lost when this is summarised as "up to the meter".
The property owner
Everything past the meter. Section 6-15.04 makes "all piping beyond the water meter, including backflow prevention assemblies" the customer's responsibility, and section 6-15.04(c) repeats it for the assemblies themselves: "backflow prevention assemblies are owned and maintained by the customer".

What else is worth knowing

Nothing conditions where the line falls, but one thing decides whether this answer applies to a given address at all, and it is not a detail. Ventura County Waterworks District No. 8 is not the only water supplier in Simi Valley. Golden State Water Company serves part of the city under a tariff filed with the California Public Utilities Commission rather than under this ordinance, and the same municipal code defines that company as a term of its own in the separate waterworks chapter at section 6-11.202. Section 6-15.04 binds District customers. A Golden State customer's answer is in that company's tariff and is not stated here, so the supplier named on the bill is the thing to check before relying on this. The chapter itself is recent and has been replaced whole twice: the code's editor records that Ord. No. WWD-19, effective 7 November 2025, "amended Chapter 15 in its entirety", the previous version having derived from WWD-18, effective 15 May 2023.

Sources

Simi Valley Municipal Code, Title 6 Sanitation and Health, Chapter 15

Also quoted:

Checked

What Simi Valley reported to the State about service-line materials

Federal rules required every community water system to inventory its service lines and publish the result. These are the figures this one filed.

The inventory records what each line is made of: lead, galvanized requiring replacement, non-lead, or lead status unknown. “Still unclassified” counts the lines whose material has not been identified. It does not mean they are lead.

Simi Valley has classified more of its service lines than most of California: 0.00% of its lines are unclassified, against 9.2% statewide.

Service lines reported
26,006
Still unclassified
0 (0.00%)
Across California, 9.2% of service lines are unclassified.
Share of service lines still unclassified
  • Simi Valley0.00%
  • California9.2%

What this page cannot tell you

  • This describes who is responsible for which part of the pipe. It is not a record of what your own service line is made of.
  • Classified does not mean inspected, and this system inspected less than most. Simi Valley established 2.9% of its classifications by field inspection, against 22% across California; the rest come from records, the year of construction, or a predictive model.
  • These figures were submitted to the State by the water system itself and were read on 4 Sep 2026. They may not reflect its current inventory - ask the water system to confirm anything about a specific address.
Simi Valley: official site

Your other pipe: the sewer lateral

For the sewer lateral, Simi Valley gives the opposite answer to the one above:

The whole run is yours, building to main - "the owner is responsible for all costs, maintenance and repair of the sewer lines in the facility or building and the sewer lateral line that connects the property to the public sewer" - and Simi Valley adds a sentence most codes leave out: "it is a violation of this chapter if the owner does not maintain these systems in proper working order." A neglected lateral is not only a bill here; the code names it a breach, and the chapter's enforcement article declares any violation of it a public nuisance.

Your sewer lateral is yours to the main; your water line stops being yours at the meter.

Same trench, separate authorities, decided separately.

Who pays for the sewer lateral in Simi Valley, CA

Look up a specific address

This page describes what applies to properties in Simi Valley in general. To see which authorities serve one address, and what records exist for it, search for it.

Search for an address

How this compares across California