Updated: Apr 29, 2026
Location and Projects
Address
39252 WINCHESTER RD SUITE 107-446, Murrieta, CA, 92563
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the Backflow Guy Plumber
the Backflow Guy, 39252 Winchester Rd, Murrieta, CA (Employees: Peter John Weiss and Roy Dwayne Richison) holds a Plumbing license and 1 other license according to the California license board.
Their BuildZoom score of 104 ranks in the top 9% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring the Backflow Guy, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
the Backflow Guy Services
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the Backflow Guy Contact Information
Phone Number: (209) 986-5246
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Address: 39252 WINCHESTER RD SUITE 107-446, Murrieta, CA 92563
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the Backflow Guy Murrieta
Quality
104
91st percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
the Backflow Guy has a BuildZoom score of 104, which places them above 91% of 336,931 contractors in California.
Activity
|
5 projects
|
2025 |
|
9 projects
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that the Backflow Guy has worked on at least
17.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
17 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that the Backflow Guy mostly works on
plumbing project
projects.
Pricing
|
2 projects
|
< $5k |
|
1 project
|
$5k-$20k |
|
1 project
|
$20k-$50k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Work category: 11p; replacement of two 6 hersey ddcii fire service backflows with new 6 wilkins 350astdar sn 2980f with by-pass assembly sn hc60341 located at the sw corner of library on holloway & 6 wilkins 350astdar sn 2981f with by-pass assembly hc60324 located at the se corner of the library next to admin building on holloway
Valuation:
N/A
Permit #:
PW20230728899
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; backflow replacement on the fire service located in fire pump room. new valve is a 10 wilkins 350astdar sn:4104f bypass info 3/4 wilkins 950xl sn: hc84465
Valuation:
N/A
Permit #:
PW20241001027
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; install of fire main backflow with bypass located in the basement closest to the street. 2 wilkins 950xlda sn: c5410 3/4 wilkins 350xl dc sn:w766203
Valuation:
N/A
Permit #:
PW20240419221
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; three backflows located in kitchen 1 bevi station courtyard
Valuation:
N/A
Permit #:
PW20250625202
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; removal or a previously existing backflow assembly. 3/4 watts lf009m3qt sn 90474 for soda rack behind ice machine in fogo de chao
Valuation:
N/A
Permit #:
PW20240402753
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Backflow replacement 1 wilkins 975xl3 on the domestic water
Valuation:
$5,527
Permit #:
B2503-212
Status:
issued
Fee:
$264
Permit Type:
Backflow
Building Type:
N/A
Work category: 11p; permitting 4 previously installed assemblies (fire service with bypass domestic and irrigation). the assemblies were previously installed in 2020 by another company when construction of the building was completed
Valuation:
N/A
Permit #:
PW20211201886
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; backflow was removed 3/4 febco 825y rp sn:ak6543 located in the basement boiler room
Valuation:
N/A
Permit #:
PW20251006613
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replacement of soda make-up backflow serial number w003861 5 wilkins 975xl with new 5 wilkins 975xl2 serial number cfa6262 above soda rack
Valuation:
N/A
Permit #:
PW20220705898
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replacement of existing 3/4 watts 007 sn 6820 with new 4 deringer 30 sn j13382 with 1/2 single check bypass bd-cv sn i-3119
Valuation:
N/A
Permit #:
PW20220418679
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; removal of 1/2 watts lf007qt serial number 06675 under the front counter near ice area serving the coffee/espresso machine
Valuation:
N/A
Permit #:
PW20221201974
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; permitting 2 pre-existing backflow assemblies in boiler room by pool. 1 watts lf009m2 sn 013743 1 watts lf009m2 sn 012915
Valuation:
N/A
Permit #:
PW20220531908
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; removal of a backflow assembly: 3/4 watts 825y serial number: 98606 on the boiler make up in loft on the tank feed
Valuation:
N/A
Permit #:
PW20221114553
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; backflow replacement on rooftop parking lot. new valve info 3/4 watts lf009m3qt rp sn: 43316
Valuation:
N/A
Permit #:
PW20241115171
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; backflow replacement on the cooling tower on 17th floor 3 watts lf909 rp sn: 017157
Valuation:
N/A
Permit #:
PW20240504546
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace one (1) 75 wilkins 950 dc sn: missing with one (1) new 75 wilkins 975xl2 rp on the industrial water service at the tcs mechanical room
Valuation:
N/A
Permit #:
PW20210803563
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replacement of 75 wilkins 975xl sn 2105375 with new 75 wilkins 975xl2 sn abw9086 in the basement mechanical room
Valuation:
N/A
Permit #:
PW20230807125
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replacement of existing backflow sn: d3686 with one new backflow wilkins 375xl sn: akb4707
Valuation:
N/A
Permit #:
PW20211223522
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of new 1.25 domestic water backflow prevention assembly at building on existing water line
Valuation:
$3,930
Permit #:
BPA2022-01751
Status:
filed
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Replace backflow prevention w/assembly 1 wilkins 375xl
Valuation:
$2,000
Permit #:
BP23-0176
Status:
issued
Fee:
N/A
Permit Type:
plumbing
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
the Backflow Guy License info
Verified License
| License # | 932357 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Corporation, Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for the Backflow Guy at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 863095 |
| Status | Inactive |
| State | California |
| Type | Plumbing |
| Business Type | Corporation, Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for the Backflow Guy at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Everest Premier Insurance Company |
97
Permits
- Building permit records show that the Backflow Guy has worked on 97 permitted projects.
the Backflow Guy Employees
PW
Peter John Weiss
Rmo / Ceo / Pres
RR
Roy Dwayne Richison
Sole Owner