2020

2019-2020

2021-2022

Census Data

Violations

Cl⁻

TTHM

Cl⁻

TTHM

TTHM

Statistics

Population

Income

Systems

Total

[ppm]

[ppb]

[ppm]

[ppb]

% Change

Mean (M)

8,046,116

$59,173

18,914

53,034

1.56

41.11

2.07

56.75

53.6%

Standard Error

2.0E+6

2260

7443

13,758

0.18

3.63

0.23

4.17

0.17

Variance

5.6E+13

7.2E+7

7.8E+8

2.7E+9

0.68

184.32

0.74

243.51

0.38

Standard Deviation (SD)

7.5E+6

8465.5

27848.9

51,480

0.46

13.58

0.86

15.60

0.62