Other States:
ILLINOIS
Population: 12,419,293

Information on the state of Illinois is available for the following topics. To review this information, click on the links below.

Contacts| Regulations, Statutes & State Codes | Quick Facts | Septic Stats

Onsite Demonstration Programs | Onsite Management Communities

 

 

Contacts:
Return to Index

Douglas J. Ebelherr, Program Manager, Private Sewage Disposal Program
or
Dave Antonacci, Section Chief, Environmental Engineering Section
Illinois Department of Public Health
Division of Environmental Health
525 West Jefferson Street
Springfield, Illinois 62761
(217) 782-5830
(217) 785-1188 (fax)

debelher@idph.state.il.us

dantonac@idph.state.il.us

Homepage: http://www.idph.state.il.us/

 

Regulations, Statutes & State Codes:
Return to Index

Illinois State Regulations

Illinois Constitutions, Statutes and Codes

Private Sewage Disposal Code
Title 77, Chapter I, Subchapter r, Part 905
1999

Onsite regulations for Illinois were last updated in 1999. They are currently not under revision; however, there are plans to revise the existing Codes/regulations prior to July 31, 2002. Revisions include adding requirements for chamber systems, Illinois raised filter bed systems, and peat filters. These changes clarify the manner in which wastes received in floor drains must handled. They also require that, where suitable soils are identified, a subsurface seepage system must be installed. The revisions adopt the current NSF Std. 40 and add criteria for administrative fines.

Those conventional systems approved for onsite wastewater treatment or disposal in Illinois include septic tank or aerobic treatment unit (ATU) discharging to a subsurface seepage field, bed, buried sand filter, recirculating sand filter, waste stabilization pond, or 8- or 10-inch gravelless pipe. Approved alternative technologies include chamber systems, Illinois raised filter beds, and peat filters. Peat filters and drip irrigation systems are approved as experimental technologies. The use of any other technology requires following the permit protocol outlined in the Illinois State Code to allow for newer innovative systems.

Surface discharge as an option for onsite septic disposal systems is allowable in Illinois for ATUs, sand filters, and waste stabilization ponds; an NPDES permit is not required.

Illinois Code allows for drainfield area/size reductions on ATUs up to one-third of the drainfield.

No funding program or mechanism exists to assist homeowners replacing failing systems or installing new systems, and there are no plans to develop such a mechanism within the next year.

Onsite wastewater demonstration, research, and/or testing projects are ongoing in Illinois. For information, contact Ebelherr (above).

Illinois Code requires two-year maintenance contracts (as required by NSF Std. 40) for Class 1 aerobic units. Further information may be obtained from Ebelherr (above). In Illinois, local health departments may have requirements greater than the State Code. Several county health departments require ongoing maintenance in their local ordinances.

The State tracks the number of permits issued per year for new construction and for system repair or replacement. Records are maintained at the State level.

Although the State does not have an official definition for what constitutes a failed system, lack of maintenance and installation too close to a seasonal high water table are cited as reasons for system failure.

The State licenses installers and pumpers under separate licenses. Illinois requires no license to perform site evaluations/inspections. Soil investigations must be done by a person certified by the Illinois Soil Classifiers Association.

For information about municipal wastewater regulations, please contact Tom McSwiggin, Manager, Permit Division, Illinois Environmental Protection Agency, at (217) 782-0610, or email EPA1239@epa.state.il.us.

 

Quick Facts:
Return to Index

Total number of onsite systems: 1990 U.S. census reports about 600,000.

Number of new systems installed each year: About 13,000 (1996).

Failure definition: NA

Number or proportion of systems presently failing: NA

Number or proportion repaired annually: NA

Number or proportion replaced annually: NA

Number or proportion of repairs or replacements that require alternative technology (e.g.,
sand filters, pressure dosing):
In 1996, more than 1200 buried sand filters, 250 lagoons,
125 mounds, and 4300 aerobic treatment plants were installed.

Number or proportion of repairs or replacements that require advanced technology (e.g.,
disinfection, nutrient removal):
Another 3494 aerobic treatment plants with disinfection were
installed in 1996.

Cost of a conventional septic system installation: $4000; range, $800-$20,000.

Cost of a centralized sewer tie-in (including fees and cost of the sewer lateral): NA

 

Septic Stats:
Return to Index

TOTAL PERSONS TOTAL HOUSING UNITS PUBLIC SYSTEM DRILLED WELL DUG WELL OTHER SOURCE PUBLIC SEWER SEPTIC TANK OTHER MEANS
ILLINOIS 11,430,602 4,506,275 4,044,971 366,146 74,026 21,132 3,885,689 598,125 22,461
COUNTIES
ADAMS 66,090 28,021 23,276 3,554 664 527 20,676 7,134 211
ALEXANDER 10,626 4,902 4,154 594 107 47 2,842 1,940 120
BOND 14,991 6,136 3,942 1,133 968 93 3,100 2,878 158
BOONE 30,806 11,477 7,370 3,863 244 0 7,255 4,077 145
BROWN 5,836 2,357 1,553 251 367 186 1,334 926 97
BUREAU 35,688 14,762 11,115 3,053 548 46 9,122 5,503 137
CALHOUN 5,322 2,951 972 958 316 705 572 2,082 297
CARROLL 16,805 7,481 4,648 2,562 216 55 4,632 2,804 45
CASS 13,437 5,698 4,258 964 394 82 3,865 1,792 41
CHAMPAIGN 173,025 68,416 62,535 5,478 397 6 58,479 9,708 229
CHRISTIAN 34,418 14,640 11,934 1,277 1,400 29 10,518 3,982 140
CLARK 15,921 7,115 4,797 1,006 1,240 72 3,674 3,286 155
CLAY 14,460 6,270 4,043 1,173 769 285 3,464 2,704 102
CLINTON 33,944 12,746 10,131 1,524 1,000 91 8,448 4,047 251
COLES 51,644 20,329 18,411 1,189 402 327 16,042 4,235 52
COOK 5,105,067 2,021,833 1,996,456 22,693 1,684 1,000 1,995,866 20,960 5,007
CRAWFORD 19,464 8,464 6,455 1,016 958 35 5,167 3,217 80
CUMBERLAND 10,670 4,448 2,645 678 1,017 108 1,889 2,461 98
DEKALB 77,932 27,351 22,404 4,652 286 9 22,568 4,708 75
DEWITT 16,516 6,942 5,343 1,345 249 5 4,428 2,476 38
DOUGLAS 19,464 7,607 5,904 1,183 462 58 4,966 2,545 96
DUPAGE 781,666 292,537 268,075 22,956 1,267 239 271,300 20,970 267
EDGAR 19,595 8,733 6,236 1,332 1,069 96 4,907 3,683 143
EDWARDS 7,440 3,260 2,425 124 276 435 1,884 1,305 71
EFFINGHAM 31,704 12,189 8,966 1,638 1,340 245 7,577 4,530 82
FAYETTE 20,893 8,551 4,502 1,714 1,948 387 4,067 4,249 235
FORD 14,275 6,118 4,856 1,200 45 17 3,549 2,538 31
FRANKLIN 40,319 18,430 17,783 160 272 215 12,433 5,678 319
FULTON 38,080 16,480 12,206 1,988 2,072 214 11,350 4,982 148
GALLATIN 6,909 3,197 2,641 402 76 78 1,531 1,589 77
GREENE 15,317 6,575 4,629 1,066 751 129 3,691 2,811 73
GRUNDY 32,337 12,652 9,040 3,368 204 40 8,329 4,228 95
HAMILTON 8,499 4,013 2,623 162 825 403 1,725 2,076 212
HANCOCK 21,373 9,692 5,956 1,988 1,516 232 4,908 4,633 151
HARDIN 5,189 2,403 1,663 562 82 96 1,085 1,195 123
HENDERSON 8,096 4,089 1,498 1,936 520 135 587 3,435 67
HENRY 51,159 20,881 16,201 3,824 758 98 14,184 6,577 120
IROQUOIS 30,787 12,819 8,578 3,928 275 38 5,035 7,621 163
JACKSON 61,067 25,539 23,398 1,309 369 463 18,244 6,765 530
JASPER 10,609 4,297 1,976 772 1,291 258 1,678 2,570 49
JEFFERSON 37,020 16,075 12,991 461 1,396 1,227 9,275 6,611 189
JERSEY 20,539 8,216 7,200 543 250 223 3,894 4,203 119
JO DAVIESS 21,821 10,757 7,118 3,440 141 58 6,039 4,661 57
JOHNSON 11,347 4,671 3,727 358 163 423 1,945 2,608 118
KANE 317,471 111,496 93,385 17,262 708 141 93,959 17,194 343
KANKAKEE 96,255 37,001 27,236 8,756 937 72 25,910 10,917 174
KENDALL 39,413 13,747 9,187 4,320 201 39 8,705 4,957 85
KNOX 56,393 23,722 20,211 2,196 1,243 72 19,213 4,426 83
LAKE 516,418 183,283 148,785 32,441 1,935 122 154,476 28,317 490
LA SALLE 106,913 43,827 35,387 7,342 967 131 30,855 12,292 680
LAWRENCE 15,972 6,980 5,174 1,334 414 58 4,167 2,696 117
LEE 34,392 13,314 8,901 4,079 302 32 8,258 4,959 97
LIVINGSTON 39,301 14,365 10,982 2,453 824 106 8,965 5,063 337
LOGAN 30,798 11,638 9,382 1,690 550 16 7,889 3,661 88
MCDONOUGH 35,244 13,257 10,468 1,536 1,162 91 9,697 3,475 85
MCHENRY 183,241 65,985 41,717 22,930 1,231 107 37,553 28,207 225
MCLEAN 129,180 49,164 43,653 4,801 572 138 39,459 9,558 147
MACON 117,206 50,049 44,175 4,816 924 134 41,506 8,423 120
MACOUPIN 47,679 20,068 16,503 1,433 1,481 651 12,788 7,092 188
MADISON 249,238 101,098 96,070 2,908 1,913 207 84,443 15,998 657
MARION 41,561 18,123 15,377 732 1,224 790 12,301 5,520 302
MARSHALL 12,846 5,317 3,731 1,142 379 65 2,032 3,259 26
MASON 16,269 7,684 3,883 3,381 362 58 3,737 3,896 51
MASSAC 14,752 6,446 5,180 974 221 71 4,046 2,297 103
MENARD 11,164 4,650 3,282 816 509 43 2,044 2,571 35
MERCER 17,290 7,244 4,469 2,232 441 102 3,580 3,604 60
MONROE 22,422 8,774 5,443 2,175 416 740 5,032 3,383 359
MONTGOMERY 30,728 12,456 9,789 1,133 1,402 132 8,493 3,796 167
MORGAN 36,397 14,724 11,824 1,516 1,282 102 11,168 3,461 95
MOULTRIE 13,930 5,384 4,185 892 259 48 3,488 1,859 37
OGLE 45,957 18,052 11,085 6,534 414 19 10,192 7,781 79
PEORIA 182,827 75,211 68,800 4,484 1,735 192 64,991 9,942 278
PERRY 21,412 9,235 7,813 261 402 759 5,527 3,475 233
PIATT 15,548 6,227 4,916 1,128 168 15 3,776 2,419 32
PIKE 17,577 8,057 5,921 1,207 573 356 4,722 3,140 195
POPE 4,373 2,154 1,349 268 160 377 451 1,458 245
PULASKI 7,523 3,410 2,191 952 212 55 1,474 1,790 146
PUTNAM 5,730 2,600 1,737 747 110 6 977 1,584 39
RANDOLPH 34,583 13,179 9,554 1,681 1,059 885 8,567 4,330 282
RICHLAND 16,545 7,142 5,050 1,427 592 73 4,532 2,483 127
ROCK ISLAND 148,723 63,327 55,915 6,594 669 149 54,851 8,307 169
ST CLAIR 262,852 103,432 98,037 3,402 1,475 518 88,714 13,831 887
SALINE 26,551 12,350 11,719 207 223 201 8,494 3,689 167
SANGAMON 178,386 76,873 71,111 3,354 2,201 207 65,540 11,083 250
SCHUYLER 7,498 3,329 2,240 346 629 114 1,561 1,641 127
SCOTT 5,644 2,442 1,599 358 432 53 1,109 1,289 44
SHELBY 22,261 9,329 5,833 1,885 1,394 217 5,003 4,197 129
STARK 6,534 2,716 1,755 592 357 12 1,493 1,206 17
STEPHENSON 48,052 20,378 15,146 4,963 209 60 14,934 5,297 147
TAZEWELL 123,692 49,315 43,429 5,291 476 119 41,034 8,133 148
UNION 17,619 7,408 5,247 1,339 253 569 4,057 3,063 288
VERMILION 88,257 37,061 31,346 4,405 1,037 273 27,122 9,684 255
WABASH 13,111 5,572 4,124 996 281 171 4,066 1,446 60
WARREN 19,181 8,229 5,651 2,154 407 17 5,221 2,967 41
WASHINGTON 14,965 6,261 4,732 564 590 375 2,969 3,132 160
WAYNE 17,241 7,622 4,918 1,503 787 414 3,848 3,658 116
WHITE 16,522 7,797 6,066 983 321 427 5,023 2,676 98
WHITESIDE 60,186 24,000 15,715 7,330 829 126 15,896 7,987 117
WILL 357,313 122,870 94,173 26,587 1,860 250 94,452 27,752 666
WILLIAMSON 57,733 25,183 24,698 203 134 148 17,666 7,215 302
WINNEBAGO 252,913 101,666 80,083 20,497 1,031 55 79,318 22,000 348
WOODFORD 32,653 11,932 8,005 3,237 553 137 6,221 5,606 105

 

Onsite Demonstration Programs:
Return to Index

No information available on Onsite Demonstration Programs in Illinois.

Onsite Management Communities:
Return to Index

Du Page County
Madison County
Will County