State Well Codes

State Well Codes

The State Well Codes database stores state standards for the construction of private water wells.

Included in the database is state-specific information on various codes related to well construction and siting. To find information on your state or other states, use the searchable database below.

Please note that this database is intended as a guide and occasionally standards change. WSC updates the database periodically, but we encourage you to obtain a full list of state well codes from the websites provided within the States Contact List to the right of this page. 

If you have questions about the database, corrections or updates, please contact Charlene Bean.

Please click on the State Name in the list below for well code information. If you would like to alphabetize the table, click on the column name in blue.

Displaying 101 - 200 of 2328 1 2 3 4 24
State Category Subcategory
South Dakota Location Wastewater System Components
South Dakota Location Wastewater Stabilization Pond
South Dakota Location Wastewater Pumping Station
Nebraska Location Wastewater Lagoon
South Dakota Location Wastewater Drainage Ditch
Indiana Location Wastewater
Maine Location Waste Water Disposal Field (>2000 Gpd)
Maine Location Waste Water Disposal Field (<2000 Gpd)
South Carolina Location Waste Treatment Lagoons
Wisconsin Location Waste Storage - Underground
Wisconsin Location Waste Storage - Earthen or Excavated
Minnesota Location Waste Stabilization Pond
Oklahoma Location Waste Lagoon
South Carolina Location Waste Disposal-Land Application Sites
Maine Void Area/Annulus Void Area/Annulus
Missouri Casing Vertical Extension
Wyoming Vents Vents - General
West Virginia Vents Vents - General
Wisconsin Vents Vents - General
Vermont Vents Vents - General
Virginia Vents Vents - General
Utah Vents Vents - General
Texas Vents Vents - General
Tennessee Vents Vents - General
South Carolina Vents Vents - General
Rhode Island Vents Vents - General
Oklahoma Vents Vents - General
Ohio Vents Vents - General
New York Vents Vents - General
New Jersey Vents Vents - General
New Hampshire Vents Vents - General
Nebraska Vents Vents - General
North Dakota Vents Vents - General
North Carolina Vents Vents - General
Alaska Vents Vents - General
Alabama Vents Vents - General
Arkansas Vents Vents - General
Arizona Vents Vents - General
California Vents Vents - General
Colorado Vents Vents - General
Connecticut Vents Vents - General
Delaware Vents Vents - General
Florida Vents Vents - General
Georgia Vents Vents - General
Hawaii Vents Vents - General
Iowa Vents Vents - General
Idaho Vents Vents - General
Illinois Vents Vents - General
Kansas Vents Vents - General
Kentucky Vents Vents - General
Lousiana Vents Vents - General
Massachusetts Vents Vents - General
Maryland Vents Vents - General
Maine Vents Vents - General
Michigan Vents Vents - General
Minnesota Vents Vents - General
Missouri Vents Vents - General
Louisiana Vents Vents - General
Wisconsin Location Vegetated Treatment Area
Ohio Location Vault Privies (Watertight)
Maine Pumps Valves
Delaware Abandonment Upper Terminus - General
Florida Abandonment Upper Terminus - General
Maryland Upper Terminal Upper Terminal - General
Illinois Upper Terminal Upper Terminal - General
Georgia Upper Terminal Upper Terminal - General
Arkansas Casing Upper Terminal
Connecticut Casing Upper Terminal
Vermont Location Up Slope Sewage System Disposal Facilities
Minnesota Location Unused, Unsealed Well Or Boring
Missouri Location Unplugged Abandoned Wells
Washington Grout Unhydrated Bentonite
Utah Grout Unhydrated Bentonite
Oregon Grout Unhydrated Bentonite
Montana Location Underground Storage Tanks
New York Location Underground Storage Tanks
New Hampshire Location Underground Storage Tanks
Delaware Location Underground Sewage Force Main
Indiana Location Uncovered Salt Storage
Montana Grout Unconsolidated Formations W/O Clay Beds
Montana Construction Unconsolidated Formations W/O Clay Beds
Oregon Seals Unconsolidated Formations w/o Clay
Oregon Seals Unconsolidated Formations w/Clay
Washington Grout Unconsolidated Formations W/ Clay Beds
Montana Grout Unconsolidated Formations W/ Clay Beds
Montana Construction Unconsolidated Formations W/ Clay Beds
Wyoming Casing Unconsolidated Formations
Wisconsin Construction Unconsolidated Formations
Arkansas Grout Unconsolidated Formations
Arkansas Casing Unconsolidated Formations
Illinois Construction Unconsolidated Formation/Sand & Gravel
Utah Grout Unconsolidated Formation W/O Confining Units
Utah Seals Unconsolidated Formation w/o Confining Units
Utah Grout Unconsolidated Formation W/ Confining Units
Utah Seals Unconsolidated Formation w/ Confining Units
Maryland Grout Unconfined Aquifer - Hydro Area 1 & 2
Tennessee Abandonment Uncased Wells
Oregon Abandonment Uncased Wells
Hawaii Location Treated Effluent Injection Well
Colorado Construction Toxic Materials
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