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)

8,879,670

$72,042

15,028

74,395

1.18

42.17

1.15

57.34

43.9%

Standard Error

2.2E+6

2794

4283

13,292

0.18

4.69

0.19

5.34

0.09

Variance

6.0E+13

9.4E+7

2.1E+8

2.1E+9

0.43

289.61

0.48

371.11

0.12

Standard Deviation (SD)

7.8E+6

9679.4

14837.9

46048.1

0.66

16.93

0.69

19.26

0.35