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)

6,096,652

$57,313

17,134

72,388

1.33

43.61

1.55

58.46

38.1%

Standard Error

2.0E+6

2,372

4689

29,089

0.22

4.53

0.18

5.79

0.13

Variance

4.4E+13

6.2E+7

2.4E+8

9.3E+9

0.52

225.67

0.35

369.89

0.18

Standard Deviation (SD)

6.6E+6

7869.4

15554.4

96479.2

0.72

15.02

0.59

19.23

0.43