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Annual testing

City of Patterson Backflow Prevention Device Annual Test Program annual backflow testing

Patterson runs an annual program tied to January letters and an approved outside tester workflow.

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Utility: City of Patterson Backflow Prevention Device Annual Test Program Last verified: 2026-06-29 Due basis: Patterson mails periodic test and maintenance letters in January and expects property owners to notify the city of their selected approved outside tester. If the owner does not respond, the city may perform the testing itself.
Direct answer

What matters here

Patterson runs an annual program tied to January letters and an approved outside tester workflow.

Due basis: Patterson mails periodic test and maintenance letters in January and expects property owners to notify the city of their selected approved outside tester. If the owner does not respond, the city may perform the testing itself.

Highlights

Highlights

  • The city mails periodic test and maintenance letters in January.
  • Owners are expected to notify the city of the approved outside tester they will use.
  • Patterson publishes the approved outside tester table directly on the public page.
Procedure facts

What has to line up before this item is closed

Use this as the source-backed check before treating the annual testing route as a completed compliance item.

Notice trigger Look for the utility name, service address, assembly serial number, account or notice ID, and due date.
Tester gate View the official tester list
Submission route Patterson annual test program (program page)
Proof to keep Report acceptance depends on the governing tester route and the utility's submission method; confirm status before scheduling.
Failed-test branch Open failed-test steps if the assembly does not pass.
Official source trail 2 stored source links, last verified 2026-06-29.
Workflow

Workflow

  1. Watch for the city's annual letter or confirm the device is on the annual program.
  2. Choose one of Patterson's approved outside testers and notify the city.
  3. Complete the annual test so the city does not have to step in under the program.
Residential

Residential

  • Patterson's public page is phrased around property owners and responsible parties rather than only large commercial accounts.
  • The annual notice system means even smaller protected properties can receive explicit testing instructions from the city.
Commercial focus

Commercial and managed properties

  • Commercial intent is strong because the city maintains an approved outside tester table instead of a generic advisory page.
  • The city can also test devices when an owner does not respond, which adds urgency to the annual cycle.
After the official step

Need local follow-up?

Use the governing authority's official tester list after you confirm the rule, due basis, and submission method for this exact topic.

View the official tester list Request local help

If you still need help after checking the official workflow, you can submit a request for local follow-up.

FAQ

Local questions people actually ask

Does City of Patterson Backflow Prevention Device Annual Test Program require annual backflow testing?

Annual. Patterson mails periodic test and maintenance letters in January and expects property owners to notify the city of their selected approved outside tester. If the owner does not respond, the city may perform the testing itself.

Who is affected by City of Patterson Backflow Prevention Device Annual Test Program backflow rules?

Property owners and responsible parties whose backflow prevention devices are installed on the City of Patterson water infrastructure.

How do I submit or confirm a backflow test for City of Patterson Backflow Prevention Device Annual Test Program?

Use the official utility workflow and submission methods listed on this page: Patterson annual test program. Program phone: 209-895-8063.

Where should I look for testers for City of Patterson Backflow Prevention Device Annual Test Program?

Start with the governing authority's published tester list. This utility has an official approved-tester route and it should be treated as the primary source.

What should I check before scheduling a tester for City of Patterson Backflow Prevention Device Annual Test Program?

Confirm the due basis, property type, device type, and submission method before booking. Then open the official tester-list route, and make sure the report can be filed through the required utility or portal path.

What costs or portal fees should I expect for City of Patterson Backflow Prevention Device Annual Test Program?

Testing is market-priced, but Patterson's approved-list structure shapes the usable quote set. Repair and retest pricing depends on the assembly and whether the city requires a corrected test under the annual program. The commercial value is in the official-list funnel and annual-notice urgency, not a public fee schedule.