20. Reno, Nevada
> Total score: 36.74
> Health guideline violations score (0-20): 10.00 – 3rd worst out of 70 cities
> Most prevalent contaminant compared to other cities: Total haloacetic acids – 29th worst out of 70 cities
19. Birmingham, Alabama
> Total score: 37.10
> Health guideline violations score (0-20): 6.25 – 41st worst out of 70 cities
> Most prevalent contaminant compared to other cities: Total THMs – 36th worst out of 70 cities
18. Knoxville, Tennessee
> Total score: 37.22
> Health guideline violations score (0-20): 5.63 – 49th worst out of 70 cities
> Most prevalent contaminant compared to other cities: Chloroform – 53rd worst out of 70 cities
17. Jacksonville, Florida
> Total score: 37.37
> Health guideline violations score (0-20): 3.13 – 65th worst out of 70 cities
> Most prevalent contaminant compared to other cities: Strontium – Worst out of 70 cities
16. Philadelphia, Pennsylvania
> Total score: 37.40
> Health guideline violations score (0-20): 6.88 – 31st worst out of 70 cities
> Most prevalent contaminant compared to other cities: Total haloacetic acids – 9th worst out of 70 cities
