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.

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State Category Subcategory
Oregon Access Ports & Tubes Access Ports & Tubes - General
Oklahoma Access Ports & Tubes Access Ports & Tubes - General
Nevada Access Ports & Tubes Access Ports & Tubes - General
New Hampshire Access Ports & Tubes Access Ports & Tubes - General
Arizona Access Ports & Tubes Access Ports & Tubes - General
California Access Ports & Tubes Access Ports & Tubes - General
Colorado Access Ports & Tubes Access Ports & Tubes - General
Connecticut Access Ports & Tubes Access Ports & Tubes - General
Florida Access Ports & Tubes Access Ports & Tubes - General
Georgia Access Ports & Tubes Access Ports & Tubes - General
Hawaii Access Ports & Tubes Access Ports & Tubes - General
Iowa Access Ports & Tubes Access Ports & Tubes - General
Idaho Access Ports & Tubes Access Ports & Tubes - General
Kentucky Access Ports & Tubes Access Ports & Tubes - General
Lousiana Access Ports & Tubes Access Ports & Tubes - General
Massachusetts Access Ports & Tubes Access Ports & Tubes - General
Montana Access Ports & Tubes Access Ports & Tubes - General
North Carolina Access Ports & Tubes Access Ports & Tubes - General
Mississippi Access Ports & Tubes Access Ports & Tubes - General
Washington Additional Requirements Concrete Curbing
Washington Additional Requirements Additional Requirements - General
Virginia Additional Requirements Positive Water Stop
Virginia Additional Requirements Cover
Virginia Additional Requirements Additional Requirements - General
Rhode Island Additional Requirements Additional Requirements - General
Oregon Additional Requirements Liner Pipe
Oregon Additional Requirements Drill Cuttings Or Chips
Oregon Additional Requirements Additional Requirements - General
New Jersey Additional Requirements Additional Requirements - General
Alaska Additional Requirements Additional Requirements - General
Arkansas Additional Requirements Additional Requirements - General
Colorado Additional Requirements Additional Requirements - General
Connecticut Additional Requirements Additional Requirements - General
Kansas Additional Requirements Additional Requirements - General
Lousiana Additional Requirements Additional Requirements - General
Maryland Additional Requirements Additional Requirements - General
Missouri Additional Requirements Additional Requirements - General
Wisconsin Additional Requirements Additional Requirements - General
Virginia Additional Requirements Casing & Grouting
Ohio Additional Requirements Additional Requirements - General
North Dakota Additional Requirements Additional Requirements - General
North Carolina Additional Requirements Additional Requirements - General
New York Additional Requirements Additional Requirements - General
Nevada Additional Requirements Additional Requirements - General
Mississippi Additional Requirements Additional Requirements - General
Minnesota Additional Requirements Additional Requirements - General
Michigan Additional Requirements Additional Requirements - General
Massachusetts Additional Requirements Additional Requirements - General
Maine Additional Requirements Additional Requirements - General
Louisiana Additional Requirements Additional Requirements - General
Indiana Additional Requirements Additional Requirements - General
Ohio Air Gap Air Gap - General
Texas Annular Seal Annular Seal - General
Texas Annular Seal Wells Producing Injurious Waters
Colorado Annular Space Annular Space - General
Connecticut Annular Space Annular Space - General
Georgia Annular Space Annular Space - General
Hawaii Annular Space Annular Space - General
Wyoming Annular Space Annular Space - General
Vermont Annular Space Annular Space - General
Rhode Island Annular Space Annular Space - General
Oregon Annular Space Annular Space - General
Oklahoma Annular Space Annular Space - General
Ohio Annular Space Shale Traps
Ohio Annular Space Grout
Ohio Annular Space Annular Space - General
New Mexico Annular Space Annular Space - General
North Carolina Annular Space Annular Space - General
New York Annular Space Annular Space - General
New Jersey Annular Space Annular Space - General
Nevada Annular Space Annular Space - General
Nebraska Annular Space Annular Space - General
Mississippi Annular Space Annular Space - General
Missouri Annular Space Annular Space - General
Minnesota Annular Space Annular Space - General
Michigan Annular Space Annular Space - General
Maryland Annular Space Annular Space - General
Massachusetts Annular Space Annular Space - Non-Flowing Artesian Well
Maine Annular Space Annular Space - General
Louisiana Annular Space Annular Space - General
Indiana Annular Space Annular Space - General
Kentucky Annular Space Annular Space - General
Illinois Annular Space Annular Space - Unconsolidated
Iowa Annular Space Annular Space - General
Idaho Annular Space Annular Space - General
Delaware Annular Space Annular Space - General
Minnesota Aquifer Interconnections Aquifer Interconnections
Florida Artesian Wells Artesian Wells - General
California Bases Bases - General
Colorado Bases Bases - General
Connecticut Bases Bases - General
Delaware Bases Bases - General
Florida Bases Bases - General
Georgia Bases Bases - General
Hawaii Bases Bases - General
Iowa Bases Bases - General
Idaho Bases Bases - General
Kentucky Bases Bases - General
North Dakota Bases Bases - General
Alaska Blasting Blasting - General
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