Drinking Water Regulations - The Drinking Water - page 55

TAble 3.5 (continued)
Capital City's Annual Level of Contaminants Found in Local Drinking Water (2011)

Regulated Substances

Maximum
Contaminate
Level Goal
(MCLG)

Capital City's
Measured
Range

Maximum
Contaminate
Level (MCL)

Meets
USEPA
Standards

Likely
Source

Capital City's
Average Level

Capital City's
Highest Level Substance Unit

Total organic carbon Occurs

naturally in
environment

1.9-3.4 2.5 3.1 2 TT 5 NA ppm Ye s

Trihalomethanes Disinfection

byproducts

20-90 45 48 4 80 NA ppb Ye s

1a MRDL.
1b MRDLG.
2 Highest monthly average for calendar year.
3 USEPA considers 50 pCi/L to be the level of concern for beta particles.
4 Highest running average of quarterly compliance samples for the calendar year.
5 Treatment technique or a required process intended to reduce the level of contaminate in drinking water.