Statistics

2020

2016

2020

Census Data

Violations Cl⁻

TTHM

Cl⁻ TTHM

TTHM

Population

Income

Systems

Total

[ppm]

[ppb]

[ppm]

[ppb]

% Change

Mean (M)

7,112,677

$63,673

17,907

60,612

1.5

40.8

1.5

35.7

18.5%

Standard Error

9.4E+6

1378

2656

8056

0.1

2.9

0.1

2.7

3.3

Variance

4.4E+13

9.3E+7

3.5E+8

3.6E+9

0.6

413.2

0.6

355.2

5.5

Standard Deviation (SD)

6.6E+6

9646.8

18,595.1

59,542.8

3.8

20.2

0.8

3.8

23.4