§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)