| Quick facts | Answer |
|---|---|
| Cost range | $50 to $250 per assembly (for testing) |
| Time | Varies by system size |
| Who's qualified | State-certified backflow prevention tester |
Why is irrigation valve winterization necessary in Charleston?
Winterization is the process of shutting off irrigation water and draining or blowing out the system. This is crucial before the first hard freeze to prevent frozen lines from cracking underground or at connection points. Damage from frozen lines may not be apparent until the system is reactivated in the spring.
What does the winterization service involve?
The service is described as a specialized sprinkler blowout service, which is part of seasonal irrigation maintenance. This process ensures that all water is removed from pipes and components before the cold weather arrives. This is most critical when temperatures are expected to freeze.
Are there specific requirements for irrigation maintenance in Charleston?
In South Carolina, irrigation contractors in some cities must hold a local business license and be SCDES certified. Furthermore, any backflow components or valves that are serviced during winterization require testing by a state-certified backflow prevention tester.
What to do next
- Verify that the local pro performing the work is a state-certified backflow prevention tester.
- Ask for proof of the tester's up-to-date backflow prevention assembly tester certification card.
- Confirm in the quote if the service includes the required backflow testing after any repairs or maintenance.
- Schedule the service in late fall or early winter to align with Charleston's freezing temperatures.
- Call (843) 286-4721 or email [email protected] for a free quote from a licensed, insured local backflow tester.
CHS Backflow is a free referral service: an independent contractor does the work and may pay us a referral fee. You never pay us anything.



