Other States:
WYOMING
Population: 493,782

Information on the state of Wyoming 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

Larry Robinson, Program Manager
Wyoming Department of Environmental Quality
Water Quality Division
Herschler Building
122 West 25th Street
Cheyenne, Wyoming 82002
(307) 777-7075
(307) 777-5973 (fax)
lrobin@state.wy.us

http://soswy.us/cgi-win/SSCGI2.exe

 

Regulations, Statutes & State Codes:
Return to Index

Wyoming State Regulations

Wyoming Constitutions, Statutes and Codes

Septic Tank and/or Soil Absorption System
Water Quality Rules and Regulations
Chapter XI, Part D
May 1984

Onsite regulations for Wyoming were last amended in May 1984. There are currently no plans to update or revise the existing Code.

Conventional and chamber systems are approved for onsite wastewater treatment and disposal in Wyoming. New or innovative technologies may be allowed when in accordance with Section 5, Part D, Chapter 11, Wyoming Water Quality Rules and Regulations.

Surface discharge of onsite septic disposal systems is an option in Wyoming for all technologies included in Chapter 11 of the State Code and innovative technologies approved in accordance with Section 5. An NPDES permit is required and is issued by the Water Quality Division of the Department of Environmental Quality.

State Code allows for drainfield area/size reductions for chamber systems.

No funding program exists to assist homeowners either replacing a failing system or installing a new one, and there are no plans to develop such a mechanism within the next year. Questions may be directed to:

Brian Mark, Program Principal
Water Quality Division
Herschler Bldg, 4W
Cheyenne, WY 82002
(307) 777-6371
(307) 777-5973 (fax)
bmark@state.wy.us

Currently, there are no ongoing onsite wastewater demonstration, research, or testing projects in Wyoming.

State Code does not require management programs/contracts or districts to monitor and maintain onsite systems or individual liquid waste systems, and there are no plans to develop such programs. Authority to adopt or require maintenance/management programs resides with the State.

Wyoming tracks the number of permits issued per year for new construction and system replacement. These records are maintained at both the State and local levels. In 17 delegated counties, records are maintained locally; in six (6) undelegated counties, they are maintained by the State.

In Wyoming, system failure would include backing up of sewage, surfacing, impact on groundwater, etc. Repair or replacement is not necessarily defined as failure. Reasons for system failure are not tracked by the State.

Onsite wastewater professionals, i.e., installers and pumpers, are licensed by local agencies. There is no state licensing of site evaluators/inspectors; however, one county requires that site evaluation and/or percolation testing be performed by a sanitarian.

Information about municipal wastewater regulations may be obtained from Robinson (above).

 

Quick Facts:
Return to Index

Total number of onsite systems: 1990 U.S. census reports about 50,000 systems.

Number of new systems installed each year: Over 1000.

Failure definition: Backup, surfacing effluent, or impacts on groundwater.

Number or proportion of systems presently failing: About 200 per year.

Number or proportion repaired annually: About 200 per year, repaired or replaced.

Number or proportion replaced annually: See above.

Number or proportion of repairs or replacements that require alternative technology (e.g.,
sand filters, pressure dosing):
Very few.

Number or proportion of repairs or replacements that require advanced technology (e.g.,
disinfection, nutrient removal):
Only in the most exceptional circumstance.

Cost of a conventional septic system installation: $2000-$2500; range, $1000-$10,000.

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 PUBLIC SEWER SEPTIC TANK OTHER MEANS
WYOMING
COUNTIES
ALBANY 30,797 13,844 11,650 1,733 82 379 11,507 2,011 326
BIG HORN 10,525 5,048 3,721 922 68 337 3,212 1,804 32
CAMPBELL 29,370 11,538 9,179 2,224 83 52 8,419 2,873 246
CARBON 16,659 8,190 6,804 1,018 123 245 6,744 1,357 89
CONVERSE 11,128 5,234 3,580 1,468 88 98 3,420 1,708 106
CROOK 5,294 2,605 1,246 1,099 53 207 1,185 1,310 110
FREMONT 33,662 14,437 9,215 4,421 286 515 8,433 5,668 336
GOSHEN 12,373 5,551 3,345 2,125 51 30 3,559 1,973 19
HOT SPRINGS 4,809 2,429 2,070 219 39 101 1,801 597 31
JOHNSON 6,145 3,112 1,863 982 116 151 1,855 1,063 194
LARAMIE 73,142 30,507 26,052 4,243 176 36 26,232 4,126 149
LINCOLN 12,625 5,409 3,861 1,165 56 327 2,799 2,504 106
NATRONA 61,226 29,082 26,224 2,081 227 550 24,951 3,810 321
NIOBRARA 2,499 1,456 934 474 31 17 926 468 62
PARK 23,178 10,306 6,513 3,040 243 510 5,777 4,396 133
PLATTE 8,145 4,026 2,735 1,248 35 8 2,577 1,421 28
SHERIDAN 23,562 11,154 7,883 2,904 48 319 7,416 3,381 357
SUBLETTE 4,843 2,911 1,215 1,628 26 42 1,232 1,600 79
SWEETWATER 38,823 15,444 14,172 1,054 76 142 14,390 892 162
TETON 11,172 7,060 4,438 1,997 130 495 3,989 2,759 312
UINTA 18,705 7,246 5,924 1,131 105 86 5,767 1,454 25
WASHAKIE 8,388 3,732 2,842 836 0 54 2,744 929 59
WESTON 6,518 3,090 2,461 385 61 183 2,069 951 70

 

Onsite Demonstration Programs:
Return to Index

There is no information available on Onsite Demonstration Programs in Wyoming.

Onsite Management Communities:
Return to Index

There is no information available on Onsite Management Communities in Wyoming.