28 Arizona water districts with results read from their own annual water quality report or EPA testing, largest first.
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- Phoenix City of1,695,000 people · 25 results
- Tucson City of732,906 people · 18 results
- Mesa City of466,000 people · 23 results
- Chandler City of247,328 people · 21 results
- Scottsdale City of241,361 people · 27 results
- Arizona Water Co - Pinal Valley134,432 people · 13 results
- Epcor - Agua Fria127,718 people · 15 results
- Epcor - San Tan87,435 people · 12 results
- Arizona Water Co - Apache Junction62,055 people · 14 results
- Liberty Water Lpsco50,770 people · 18 results
- Oro Valley Water Utility42,316 people · 11 results
- Epcor - Sun City38,016 people · 10 results
- Epcor - Chaparral City26,026 people · 16 results
- Epcor - Sun City West25,796 people · 11 results
- Epcor - Anthem23,826 people · 16 results
- Nogales City of22,000 people · 9 results
- Safford City of20,600 people · 10 results
- Bella Vista City Water System20,045 people · 7 results
- Pima Utilities20,000 people · 9 results
- Arizona Water Co - White Tanks18,858 people · 16 results
- Lago del Oro Water Company18,132 people · 12 results
- Liberty Water Rio Rico17,960 people · 11 results
- Vail Water Company16,363 people · 13 results
- Arizona Water Co - Overgaard13,797 people · 11 results
- Arizona Water Co - Sierra Vista9,175 people · 14 results
- Arizona Water Co - Pinetop Lakes3,513 people · 10 results
- Arizona Water Co - Ajo2,100 people · 11 results
- Cottonwood Municipal Water Cw11 results