TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE C: WATER POLLUTION
CHAPTER I: POLLUTION CONTROL BOARD
PART 302 WATER QUALITY STANDARDS
SECTION 302.304 CHEMICAL CONSTITUENTS


 

Section 302.304  Chemical Constituents

 

The following levels of chemical constituents must not be exceeded:

 

 

CONCENTRATION

CONSTITUENT

(mg/L)

 

 

Arsenic (total)

0.05

Barium (total)

1.0

Boron (total)

1.0

Cadmium (total)

0.010

Chloride (total)

250

Chromium

0.05

Fluoride (total)

1.4

Iron (dissolved)

0.3

Lead (total)

0.05

Manganese (total)

1.0

Nitrate-Nitrogen

10

Oil (hexane-solubles

or equivalent)

0.1

 

Organics

 

Pesticides

 

Chlorinated Hydro-

 

carbon Insecticides

 

Aldrin

0.001

Chlordane

0.003

DDT

0.05

Dieldrin

0.001

Endrin

0.0002

Heptachlor

0.0001

Heptachlor Expoxide

0.0001

Lindane

0.004

Methoxychlor

0.1

Toxaphene

0.0005

Organophosphate

 

Insecticides

 

Parathion

0.1

Chlorophenoxy Herbicides

 

2,4-Dichlorophenoxy-

 

acetic acid (2,4-D)

0.1

2-(2,4,5-Trichloro-

 

phenoxy)-propionic

 

acid (2,4,5-TP

 

or Silvex)

0.01

Phenols

0.001

Selenium (total)

0.01

Sulfate

250

Total Dissolved Solids

500

 

(Source:  Amended at 47 Ill. Reg. 4437, effective March 23, 2023)