Other States:
OKLAHOMA
Population: 3,450,654

Information on the state of Oklahoma 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:
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Robert G. Huber, Programs Coordinator
or
David Freede, Assistant Division Director
Oklahoma Department of Environmental Quality
PO Box 1677
707 N. Robinson
Oklahoma City, Oklahoma 73101
(405) 702-6169 or (405) 702-6222 (respectively)
(405) 702-6223 (fax)

Robert.Huber@deq.state.ok.us

David.Freede@deq.state.ok.us

http://www.deq.state.ok.us/

 

Regulations, Statutes & State Codes:
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Oklahoma State Regulations

Oklahoma Constitutions, Statutes and Codes

Residential Sewage Disposal
Chapter 310:340
2000

Onsite regulations for Oklahoma were last amended in 2000; however, they are currently under revision, including regulations on certified onsite system installers and drafting of new regulations for certifying individuals who perform soil profiles. If passed, rules will go into effect July 2002.

Those technologies approved for onsite wastewater treatment and disposal in Oklahoma include:
· Conventional systems-Gravel subsurface, lagoon, and aerobic systems.
· Alternative systems-Wetland systems, minor variations to the rules, polystyrene (gravel substitute) systems, and 30% linear foot reduction for certain chamber systems.
Other technologies may be allowed under certain circumstances, for example, experimental systems in the evaluation phase. New product or technology representatives make a presentation of their product to a nine-member review board. The board determines minimum installation guidelines, if installation will be allowed, and testing protocol.

Surface discharge is not an option in Oklahoma.

State Code allows for drainfield area/size reduction; a 30% reduction in the linear length is allowed for chamber systems that meet specific sizing criteria. The basis for reduction, e.g., alternative media, soils, and wastewater loading rates, is currently being considered.

A funding program exists to assist homeowners either replacing a failing system or installing a new one. Questions may be directed to Huber (above).

Currently, no onsite wastewater demonstration, research, or testing projects are ongoing in the state.

Oklahoma Code requires maintenance/management contracts to monitor and maintain aerobic treatment units (ATUs). The state has sole authority to adopt or require maintenance/management programs.

The state tracks the number of permits issued per year for new construction and for system repair and replacement. These records are maintained at both the local and state levels.

In Oklahoma, onsite system failure occurs when wastewater is discharged to the surface of the ground. Multiple factors, such as poor installation/construction and/or lack of proper maintenance, are generally responsible for system failure.

Oklahoma conducts a licensing/certification program for onsite wastewater professionals, and a list of certified individuals is available. In Oklahoma, DEQ employees or certified onsite system installers may perform inspections of onsite system construction. DEQ employees, Registered Professional Sanitarian, Registered Professional Environmental Specialist, Licensed Sanitarian, and Professional Engineers may perform soil percolation tests, or soil profiles when certified by the DEQ. Soil technicians may also perform soil profiles with DEQ certification.

Questions relevant to municipal wastewater regulations may be directed to:

Carl Parrott
Oklahoma DEQ
(406) 702-8100

 

Quick Facts:
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Total number of onsite systems: Reportedly about 270,000, although the 1990 U.S. census
reports approximately 370,000 systems. Oklahoma is currently attempting to get a firmer grasp
of these numbers.

Number of new systems installed each year: Approximately 4000; by another report,
20,000-30,000.

Failure definition: Backup, surfacing, or discharging off the property.

Number or proportion of systems presently failing: 5-10%; up to 20% in wet months; by
another report, 5000-10,000.

Number or proportion repaired annually: 400-600; by another report, 2000-3000.

Number or proportion replaced annually: 300-500; by another report, 1000-2000.

Number or proportion of repairs or replacements that require alternative technology (e.g.,
sand filters, pressure dosing):
Estimates varied, but a significant percentage of replacements
are either aerobic units (90% of alternatives) or evapotranspiration systems using rock/reed plant
filters (10% of alternatives).

Number or proportion of repairs or replacements that require advanced technology (e.g.,
disinfection, nutrient removal):
About 700 are on file.

Cost of a conventional septic system installation: $3000; range, $900-$6000.

Cost of a centralized sewer tie-in (including fees and cost of the sewer lateral): $1350-$2000, estimated.

 

Septic Stats:
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TOTAL PERSONS TOTAL HOUSING UNITS PUBLIC SYSTEM DRILLED WELL DUG WELL OTHER PUBLIC SEWER SEPTIC TANK OTHER MEANS
OKLAHOMA 3,145,585 1,406,499 1,223,121 163,916 13,158 6,304 1,028,594 367,197 10,708
COUNTIES
ADAIR 18,421 7,124 3,644 3,088 170 222 2,071 4,822 231
ALFALFA 6,416 3,357 2,544 717 56 40 2,137 1,166 54
ATOKA 12,778 5,110 3,716 1,079 195 120 1,843 3,098 169
BEAVER 6,023 2,923 1,387 1,512 10 14 1,392 1,510 21
BECKHAM 18,812 9,117 7,668 1,304 144 1 7,073 2,009 35
BLAINE 11,470 5,729 4,183 1,468 76 2 3,875 1,806 48
BRYAN 32,089 14,875 11,889 2,594 364 28 8,149 6,573 153
CADDO 29,550 13,191 8,573 4,401 193 24 7,118 5,943 130
CANADIAN 74,409 28,560 24,854 3,316 281 109 22,028 6,354 178
CARTER 42,919 19,201 16,598 2,456 101 46 12,969 6,112 120
CHEROKEE 34,049 15,935 11,341 3,935 247 412 6,021 9,694 220
CHOCTAW 15,302 6,844 4,446 2,066 297 35 3,546 3,147 151
CIMARRON 3,301 1,690 1,143 525 14 8 1,086 581 23
CLEVELAND 174,253 71,038 60,085 10,516 412 25 59,514 11,404 120
COAL 5,780 2,725 2,328 300 48 49 1,176 1,499 50
COMANCHE 111,486 43,589 42,200 1,070 210 109 39,012 4,449 128
COTTON 6,651 3,152 2,721 292 84 55 2,215 862 75
CRAIG 14,104 6,041 5,434 487 95 25 3,357 2,584 100
CREEK 60,915 25,143 20,271 4,596 169 107 13,702 11,237 204
CUSTER 26,897 11,636 10,294 1,243 33 66 9,319 2,212 105
DELAWARE 28,070 16,808 7,922 7,745 414 727 3,334 13,095 379
DEWEY 5,551 2,733 1,933 750 37 13 1,519 1,162 52
ELLIS 4,497 2,449 1,586 798 40 25 1,556 816 77
GARFIELD 56,735 26,502 23,685 2,623 170 24 23,276 3,140 86
GARVIN 26,605 11,932 9,628 2,089 204 11 7,434 4,343 155
GRADY 41,747 17,788 11,563 5,727 467 31 9,430 8,169 189
GRANT 5,689 2,955 2,494 399 50 12 1,965 957 33
GREER 6,559 3,126 2,813 241 31 41 2,502 600 24
HARMON 3,793 1,793 1,704 64 4 21 1,349 442 2
HARPER 4,063 2,077 1,593 443 14 27 1,357 685 35
HASKELL 10,940 5,138 3,530 1,352 205 51 1,617 3,342 179
HUGHES 13,023 6,021 4,676 1,094 140 111 3,449 2,407 165
JACKSON 28,764 12,125 11,453 611 46 15 10,530 1,568 27
JEFFERSON 7,010 3,522 3,004 393 100 25 2,562 858 102
JOHNSTON 10,032 4,478 3,363 918 144 53 2,174 2,245 59
KAY 48,056 22,456 21,089 1,172 157 38 19,124 3,181 151
KINGFISHER 13,212 5,791 4,556 1,202 23 10 3,445 2,334 12
KIOWA 11,347 5,645 5,155 285 151 54 4,405 1,139 101
LATIMER 10,333 4,303 3,846 290 18 149 1,797 2,415 91
LE FLORE 43,270 18,029 15,703 1,973 212 141 8,944 8,874 211
LINCOLN 29,216 12,302 6,130 5,876 262 34 5,269 6,786 247
LOGAN 29,011 12,277 6,989 5,113 175 0 5,331 6,765 181
LOVE 8,157 3,583 2,604 869 104 6 1,131 2,357 95
MCCLAIN 22,795 9,300 5,588 3,455 245 12 3,740 5,369 191
MCCURTAIN 33,433 13,828 9,006 3,700 845 277 5,390 7,874 564
MCINTOSH 16,779 10,708 8,535 1,785 234 154 2,944 7,503 261
MAJOR 8,055 3,855 2,332 1,427 93 3 1,983 1,764 108
MARSHALL 10,829 7,389 6,031 1,139 172 47 2,720 4,598 71
MAYES 33,366 15,470 12,311 2,569 159 431 6,572 8,757 141
MURRAY 12,042 5,742 5,209 392 112 29 3,532 2,150 60
MUSKOGEE 68,078 28,882 27,518 1,122 134 108 21,298 7,365 219
NOBLE 11,045 4,894 4,245 490 120 39 3,251 1,593 50
NOWATA 9,992 4,534 4,157 228 53 96 2,768 1,658 108
OKFUSKEE 11,551 4,894 3,852 860 76 106 2,425 2,352 117
OKLAHOMA 599,611 279,340 258,078 19,471 1,621 170 253,706 24,758 876
OKMULGEE 36,490 16,431 15,838 356 126 111 10,750 5,564 117
OSAGE 41,645 18,196 15,738 2,063 140 255 9,750 8,242 204
OTTAWA 30,561 14,064 11,925 1,941 141 57 9,701 4,272 91
PAWNEE 15,575 7,407 5,695 1,556 97 59 3,140 4,186 81
PAYNE 61,507 27,381 24,263 2,975 93 50 21,370 5,883 128
PITTSBURG 40,581 19,433 17,750 1,217 209 257 11,425 7,735 273
PONTOTOC 34,119 15,094 13,411 1,472 102 109 9,156 5,810 128
POTTAWATOMIE 58,760 24,528 16,233 7,812 425 58 14,433 9,870 225
PUSHMATAHA 10,997 5,190 3,375 1,461 233 121 1,584 3,251 355
ROGER MILLS 4,147 2,048 1,167 866 14 1 828 1,186 34
ROGERS 55,170 21,455 20,562 716 95 82 8,888 12,412 155
SEMINOLE 25,412 11,404 8,455 2,778 143 28 6,569 4,669 166
SEQUOYAH 33,828 14,314 12,162 1,802 208 142 6,213 7,860 241
STEPHENS 42,299 19,675 16,065 3,383 210 17 13,507 6,066 102
TEXAS 16,419 7,328 5,764 1,522 36 6 5,615 1,653 60
TILLMAN 10,384 4,704 4,273 344 59 28 3,896 782 26
TULSA 503,341 227,834 225,843 1,592 235 164 209,074 18,447 313
WAGONER 47,883 19,262 17,934 1,101 151 76 8,708 10,472 82
WASHINGTON 48,066 21,707 21,363 204 89 51 18,369 3,277 61
WASHITA 11,441 6,101 4,891 1,145 55 10 4,070 1,956 75
WOODS 9,103 4,782 4,202 539 34 7 3,667 1,089 26
WOODWARD 18,976 8,512 7,012 1,441 32 27 6,449 2,032 31

 

Onsite Demonstration Programs:
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Several aerobic units and rock/reed plant filters have been installed as demonstrations.

Onsite Management Communities:
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There is no information available on Onsite Management Communities in Oklahoma.