How can I get my rain catchment system water tested?
Rain catchment testing is provided by the state through an accredited lab for a fee. For information about catchment systems and catchment system water testing contact the
Dept. of Health Safe Drinking Water Branch toll free at 800-468-4644 ext. 64258 or go to http://health.hawaii.gov/sdwb/raincatchment/

The University of Hawaii also provides extensive information on rain catchment systems as well as provides home testing kits for a fee. For more information, call 808-329-2861 or visit http://www.ctahr.hawaii.edu/hawaiianrain/index/html
University of Hawaii - Rain Catchment Systems

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1. What are the sources of drinking water?
2. Why are there contaminants in my drinking water?
3. Is my drinking water safe to drink?
4. How often is my water tested?
5. How can I get my water tested?
6. Do I need to take special precautions?
7. Do I need to filter my water?
8. What is the pH of my water?
9. Is there fluoride in my water?
10. Do I have hard or soft water?
11. What can I do about chlorine taste and odor?
12. I live on a dead-end (cul-de-sac) and my water has a yellow tinge to it. Is this okay?
13. Why is my water milky?
14. How can I tell if air bubbles are causing my water to look milky?
15. How can I get my rain catchment system water tested?
16. What other contaminants may be found in my drinking water?