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Backflow Prevention Testing Cost in St. Louis, MO
Detailed pricing guide with local market adjustments and material comparisons
St. Louis Average
$115–$575
Market Tier
Large City
Cost Breakdown
Backflow Prevention Testing Cost in St. Louis
Large CityLowAverageHigh
$115$345$575
Market Tier
Large City (1.15x)
Large city with competitive market and moderate-high costs
Material Cost Comparison
Backflow prevention device(Budget)
$86–$431Test gauge kit(Mid-Range)
$115–$575Isolation valves(Premium)
$161–$805Factors that affect your cost
- Testing only vs device installation
- Device type (RPZ, double check, PVB)
- Number of devices
- Annual certification fee
- Municipality requirements
Get Quotes in St. Louis
Right Now Plumbing
Saint Louis, MO
(314) 965-0433Lemay Plumbing, Inc.
Saint Louis, MO
(314) 544-1066
Pipe Solutions
Saint Louis, MO
(636) 856-8989Tony LaMartina Plumbing Co. Inc
Saint Louis, MO
(314) 965-9377Founding Member
Premium spot in St. Louis
Ambassador
Lead the St. Louis community
Founding Member
Premium spot in St. Louis
St. Louis Housing Market
Median Household Income
$55,279
Median Home Value
$185,100
Median Rent
$978/mo
Homeownership Rate
45.4%
Population
293,109
Median Year Built
1938
Source: U.S. Census Bureau, ACS 2023 5-Year Estimates
Track Your Costs
Maintenance
Backflow Prevention Testing
Date
April 2026
Cost
$345
Vendor
Your local pro
Warranty
5-year material warranty
St. Louis average: $115–$575
Before
Issue documented with photos
After
Repair completed, area sealed
Materials Used
Backflow prevention deviceTest gauge kitIsolation valves
Warranty Details
5-year material warranty
Auto-Checkup Created
"Backflow Test" — every 12 months
Added by youApril 2026
Property Health Score
Fair
75
plumbing category +5 pts(70 → 75)
Documentation19/25
Maintenance20/25
Warranty22/25
Investment21/25
Your health score is calculated based on documentation completeness, maintenance currency, warranty coverage, and investment tracking.
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Date:2026-04-05
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Cost FAQ
What is the average cost of backflow prevention testing in St. Louis?
The average cost of backflow prevention testing in St. Louis, MO ranges from $115 to $575. The final price depends on Testing only vs device installation, Device type (RPZ, double check, PVB), Number of devices.
What factors affect backflow prevention testing cost?
Key factors include: Testing only vs device installation, Device type (RPZ, double check, PVB), Number of devices, Annual certification fee, Municipality requirements. In St. Louis, local labor rates and material availability also influence pricing.
How do I get accurate quotes for backflow prevention testing in St. Louis?
Get at least 3 quotes from licensed professionals in St. Louis. Use Fizbo SmartSearch to find and compare local plumbers, read reviews, and request estimates — all in one place.