Just because you already have your license doesn't mean you should stop training, there many other aspects to the plumbing trade where you can expand your knowledge and thereby line your wallet.
- Cross connection control - Backflow preventer tester is a sought after skill right now. This 3-5 day course can open up big opportunities as more and more municipalities are enforcing the annual inspection of backflow preventers. Testing one device usually only takes 10 minutes and earns you 75-150 dollars.
Here is a generic backflow preventer test form that covers all the testable devices on one sheet. It's created in a Word doc that you can customize and print and covers all the legal aspects but may not be suitable for you municipality.
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