Statistics

2020

2016

2020

Census Data

Violations Cl⁻

TTHM

Cl⁻ TTHM

TTHM

Population

Income

Systems

Total

[ppm]

[ppb]

[ppm]

[ppb]

% Change

Mean (M)

8,879,670

$72,042

15,028

74,395

1.2

37.0

1.1

32.0

20.8%

Standard Error

2.2E+6

2794

4283

13,292

0.2

6.4

0.2

4.7

10.5

Variance

6.0E+13

9.4E+7

2.1E+8

2.1E+9

0.6

22.3

0.7

20.3

12.2

Standard Deviation (SD)

7.8E+6

9679.4

14,837.9

46,048.1

0.8

22.3

0.7

20.2

34.8