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)

7,112,677

$63,673

17,907

60,612

1.50

38.17

1.67

52.78

55.3%

Standard Error

9.4E+6

1,378

2656

8056

0.11

2.39

0.19

2.78

0.10

Variance

4.4E+13

9.3E+7

3.5E+8

3.6E+9

0.59

285.24

0.71

385.20

0.68

Standard Deviation (SD)

6.6E+6

9646.8

18595.1

59542.8

0.77

16.89

0.84

19.63

0.46