CHAPTER I: DEPARTMENT OF PUBLIC HEALTH
SUBCHAPTER r: WATER AND SEWAGE
PART 920 WATER WELL CONSTRUCTION CODE
SECTION 920.TABLE C MINIMAL LATERAL DISTANCES IN FEET BETWEEN WATER WELLS, CLOSED-LOOP WELLS, AND SOURCES OF CONTAMINATION
Section 920.Table C Minimal Lateral Distances in Feet Between Water Wells, Closed-Loop Wells, and Sources of Contamination
|
SOURCES OF CONTAMINATION OR EXISTING WATER WELL |
MINIMUM LATERAL DISTANCES FOR CLAY AND LOAM SOILS (FEET) |
|
|
WATER WELL |
CLOSED LOOP WELL |
|
|
Cesspool |
150 |
150 |
|
Closed Loop Well1 |
200 |
NA |
|
Water Well1 |
NA |
200 |
|
Water Well (when the owner of the closed loop well and a water well serving a private water supply is the same)1 |
N/A |
75 |
|
Leaching Pit |
100 |
100 |
|
Pit Privy |
75 |
75 |
|
Subsurface Seepage System, Distribution Box, Sand Filter, Waste Stabilization Pond, Effluent Receiving Trench |
75 |
75 |
|
Manure Pile |
75 |
75 |
|
Septic Tank, Aerobic Treatment Plant, Surface Discharge Effluent Line, Treated Effluent Discharge Point |
50 |
50 |
|
Barnyard or Animal Confinement Lot |
50 |
50 |
|
Footing Drains (No connection to a sewer or sump handling sewage is allowed.) |
10 |
102 |
|
Pump House Floor Drain |
2 |
22 |
|
Pit, Crawl Space or Basement |
5 |
52 |
|
Lake, Pond or Stream |
25 |
253 |
|
Potential Primary Source, Potential Secondary Source, or Potential Route |
200 |
200 |
|
Potential Primary Source, Potential Secondary Source, or Potential Route (when the owner of the source or route and a water well serving a private water supply or closed loop well is the same) |
75 |
75 |
|
Abandoned Wells |
200 |
200 |
|
Sewers (Sanitary or Combined) |
504 |
504,5 |
|
Storm Sewers |
10 |
106 |
1 A closed loop well utilizing USP food grade propylene glycol may be located to within 25 feet of a water well.
2 These setbacks do not apply when the closed loop well is installed prior to the construction of the building.
3 The 25-foot separation distance from a pond does not apply to a closed loop well when:
1) The borehole is grouted the same day that is constructed;
2) The top 20 feet of the borehole is bored to a diameter at least 3 inches greater than the total diameter of the heat exchanger; and
3) The enlarged top 20 feet of the borehole is grouted with bentonite chips manufactured for well sealing within 24 hours after the construction of the borehole.
4 A water well or closed loop well may be located to within 10 feet of a sewer provided that the sewer consists of cast iron pipe with watertight mechanical joints or rubber gasket sealed joints that meet ASTM Standard C564-11, SDR 26 PVC pipe or schedule 40 PVC pipe or heavier with solvent welded watertight joints or elastomeric seals (gaskets) used for push-on joints that meet ASTM Standard F477-10.
5 If the sewer pipe material is unknown, the 50-foot separation distance may be reduced to 25 feet if the following conditions are met:
1) The borehole is grouted the same day that it is constructed;
2) The top 20 feet of the borehole is bored to a diameter at least 3 inches greater than the total diameter of the heat exchanger; and
3) The enlarged top 20 feet of the borehole is grouted with bentonite chips manufactured for well sealing within 24 hours after the construction of the borehole.
6 The 10-foot separation distance for a storm sewer does not apply to a closed loop well when:
1) The borehole is grouted the same day that it is constructed;
2) The top 20 feet of the borehole is bored to a diameter at least 3 inches greater than the total diameter of the heat exchanger; and
3) The enlarged top 20 feet of the borehole is grouted with bentonite chips manufactured for well sealing within 24 hours after the construction of the borehole.
(Source: Amended at 39 Ill. Reg. 3992, effective March 2, 2015)