How long must a Boil Water Advisory or Notice be in effect?
An advisory or notice will remain in effect until test samples show the water is safe to drink. Testing for bacteria requires 18-24 hours to complete, depending on the type of test used. The samples are incubated to actually grown bacteria, if any are present. As a result, advisories and notices will be in effect for at least 18-24 hours.

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1. Do I still need to boil my water if I have a filter system on my faucet or refrigerator?
2. How long must a Boil Water Advisory or Notice be in effect?
3. How will I be notified if my home / business is affected by an advisory or notice?
4. How will I know when the advisory or notice has been lifted?
5. Is the water safe for washing dishes, laundry, and bathing?
6. Since an advisory is a precautionary measure, will I get sick if I drink the water or if I drank some water before I found out about the advisory?
7. Under what circumstances will Charleston Water System issue a Boil Water Advisory or Notice?
8. What are a Do Not Drink Notice and a Do Not Use Notice?
9. What are total coliform bacteria?
10. What is a Boil Water Advisory and is it the same as a Boil Water Notice?
11. What should I do during a Boil Water Advisory or Notice?
12. Where can I find more information?
13. Will DHEC issue a Boil Water Advisory in preparation for a hurricane?