California consistently ranks as some of the worst water in the country, but San Diego County also falls into the top 10 list of US cities with worst water. The scarcity of natural water from rainfall and importing water from Colorado through open and dirty waterways all contribute to the contamination of your tap water. Find out what’s in your water now and how to fix it!

1. Carlsbad Municipal Water District
2. City of Del Mar
3. City of Escondido
4. Fallbrook Public Utility District
5. Helix Water District
6. Lakeside Water District
7. National City/Sweetwater Authority
8. City of Oceanside
9. Olivenhain Municipal Water District
10. Otay Water District
11. Padre Dam Municipal Water
12. Marine CPS Base Camp Pendleton/Fallbrook
13. City of Poway
14. Rainbow Municipal Water District
15. Ramona Municipal Water District
16. Rincon Del Diablo Municipal Water District
17. City of San Diego
18. San Dieguito Water District
19. Santa Fe Irrigation District
20. South Bay Irrigation District
21. Vallecitos Water District
22. Valley Center Municipal Water District
23. Vista Irrigation District
24. Yuima Municipal Water District