Section 895.20 Water Supply
a) Source.
A supply of water in compliance with this Section shall be provided to any
residential dwelling subject to this Part. The source of water serving a
semi-private water supply, including water supplied to employees, or the source
of any water supply, when made accessible to the public for drinking, cooking
or washing purposes, shall be obtained from one of the following:
1) a public water supply;
2) a
water well which is located and constructed in accordance with the Illinois
Water Well Construction Code (77 Ill. Adm. Code 920) and Illinois Water Well
Pump Installation Code (77 Ill. Adm. Code 925);
3) a
surface water supply constructed in accordance with the Surface Source Water
Treatment Code (77 Ill. Adm. Code 930) or in compliance with "Ten States
Standards" (1982 Edition - Health Education Service, P.O. Box 7283,
Albany, New York, 12224) for potable water;
4) a
hauled water supply utilizing a public water supply as the source. All water
must be hauled in a tank protected against contamination and used only for this
purpose. In an emergency, equipment used for handling other potable materials,
such as milk and syrup, may be used after cleaning and disinfection with a
solution of not less than one hundred parts per million of free chlorine. A watertight
holding tank protected against possible entry of contamination is required and
if any portion is below ground, location with respect to sources of
contamination must be the same as for a well source. Required distances from
sources of contamination to a well are found in Section 920.50 of the Illinois
Water Well Construction Code (77 Ill. Adm. Code 920). Transfer of the water
from the hauling tank must be in a manner which will not result in
contamination.
b) Maximum
Contaminant Levels. Any water supply, excluding public water supplies, when
the water will be made accessible to the public, including potable water
supplied to employees, shall meet the nitrate, turbidity, and bacteriological
requirements contained in subsections (b)(1), (2), and (3).
1) Semi-Private
Water Supply. Any semi-private water supply serving a resident population
shall meet the requirements for inorganic chemicals, synthetic organic
chemicals, and volatile organic chemicals contained in subsections (b)(5), (6),
and (7), respectively, as well as the overall requirements of subsections
(b)(1), (2), and (3).
2) Nitrates/Nitrites.
A) The
maximum contaminant level for nitrate shall not exceed 10 milligrams per liter
as nitrogen. Nitrate levels not to exceed 20 milligrams per liter as nitrogen
may be allowed if the supplier of water demonstrates that:
i) the
water will not be available to children under 6 months of age; and
ii) there
will be continuous public notification stating nitrate levels exceed 10 milligrams
per liter as nitrogen and describing the potential effects of the contaminant
exposure on public health.
B) The
maximum contaminant level for nitrite shall not exceed 1 milligram per liter as
nitrogen.
3) Turbidity.
The maximum contaminant level in a water system that uses surface water in
whole or in part, measured at a representative entry point to the distribution
system, shall not exceed one turbidity unit, except that turbidity values
greater than 1 or less than or equal to 5 turbidity units may be allowed if the
supplier of water can demonstrate to the Department and the Department agrees
in writing that the higher turbidity does not do any of the following:
A) Interfere
with disinfection.
B) Prevent
maintenance of an effective disinfectant residual throughout the distribution
system.
C) Interfere
with microbiological determinations.
4) Bacteriological.
Any water supply that has 2 consecutive water samples positive for coliform
bacteria, or has any water sample that is E. coli positive, is in violation of
the coliform maximum contaminant level.
5) Inorganic
Chemicals. The maximum contaminant levels for the following inorganic
chemicals shall not be exceeded:
Chemical Maximum
Contaminant Level
Asbestos 7
million fibers/liter
Barium 2
mg/L
Cadmium 0.005
mg/L
Chromium 0.1
mg/L
Mercury 0.002
mg/L
Selenium 0.05
mg/L
Fluoride 4
mg/L
Lead 0.015
mg/L
Copper 1.3
mg/L
Antimony 0.006
mg/L
Beryllium 0.004
mg/L
Cyanide 0.2 mg/L
Nickel 0.1 mg/L
Thallium 0.002
mg/L
6) Synthetic
Organic Chemicals. The maximum contaminant levels for the following synthetic
organic chemicals shall not be exceeded:
Chemical Maximum
Contaminant Level
Alachlor 0.002
mg/L
Atrazine 0.002 mg/L
Carbofuran 0.04 mg/L
Chlordane 0.002 mg/L
1,2-Dibromo-3-Chloropropane
(DBCP) 0.075 mg/L
Heptachlor 0.0004
mg/L
Heptachlor
epoxide 0.002 mg/L
Lindane 0.0002
mg/L
Methoxychlor 0.04
mg/L
Polychlorinated
biphenyls
(PCBs) 0.0005
mg/L
Pentachlorophenol 0.001
mg/L
Toxaphene 0.002
mg/L
2,4,5-TP (Silvex) 0.05
mg/L
Diquat 0.02
mg/L
Endothall 0.1
mg/L
Glyphosate 0.7
mg/L
Oxamyl (Vydate) 0.2
mg/L
Picloram 0.004
mg/L
Simazine 0.02
mg/L
7) Volatile
Organic Chemicals. The maximum contaminant levels for the following volatile
organic chemicals shall not be exceeded.
Chemical Maximum
Contaminant Level
Benzene 0.005
mg/L
Carbon
tetrachloride 0.005 mg/L
1,2-Dichloroethane 0.005
mg/L
Trichloroethylene 0.005
mg/L
para-Dichlorobenzene 0.075 mg/L
1,1-Dichloroethylene 0.007 mg/L
1,1,1-Trichloroethane 0.2
mg/L
Vinyl chloride 0.002
mg/L
cis-1,2-Dichloroethylene 0.07
mg/L
1,2-Dichloropropane 0.005
mg/L
Ethylbenzene 0.7
mg/L
Monochlorobenzene 0.1
mg/L
o-Dichlorobenzene 0.6 mg/L
Styrene 0.1 mg/L
Tetrachloroethylene 0.005
mg/L
Toluene 1
mg/L
trans-1,2-Dichloroethylene 0.1
mg/L
Xylene 10
mg/L
Dichloromethane 0.005
mg/L
1,2,4-Trichlorobenzene 0.07
mg/L
1,1,2-Trichloroethane 0.005
mg/L
8) Maximum
Contaminant Level Exceeded. At any time a maximum contaminant level is found
to have been exceeded in any water supply and the water will be made accessible
to the public for human consumption, excluding a public water system, the owner
of the supply shall notify the local health department or the Illinois
Department of Public Health for a determination regarding any required
corrective action. It shall be the responsibility of the water supply owner to
assure that any required analyses are performed by laboratories approved for
these analyses by the Department or the Illinois Environmental Protection
Agency and the results are submitted to the Department or the local health
department. A list of approved laboratories will be provided by the Department
upon request.
c) Drinking
Fountains. Drinking fountains must meet the requirements of the Illinois
Plumbing Code (77 Ill. Adm. Code 890).
(Source: Amended at 25 Ill. Reg.
4269, effective March 10, 2001)