Approximately 7,000 new water wells are constructed and 2,000 abandoned wells are sealed in Illinois each year. A major consideration in constructing these wells is to prevent contamination from the ground surface or shallow ground water, sewage disposal systems and other hazardous sources, from entering the well. To ensure the safety of these water supplies, the division and local health departments review water well installation plans, issue permits for new well construction and inspect wells. The division licenses approximately 640 people who construct wells and/or install water well pumps. Staff consult with the public and local governments about private water supply issues and prepare publications concerning the use of surface water and groundwater supplies.

FACT SHEETS

A Safe Water Supply Depends on Location and Construction - Bored Wells
A Safe Water Supply Depends on Location and Construction - Drilled Wells
Abandoned Wells - Hazards to Health and Safety
Alachlor and Atrazine in Groundwater
Arsenic in Groundwater
Commonly Found Substances in Drinking Water and Available Treatment - PDF
Cryptosporidiosis
Emergency Hauling, Storing and Disinfecting of Water Supplies
Giardiasis
Iron in Drinking Water
Nitrates in Drinking Water
Radium in Drinking Water
Vinyl Chloride in Groundwater
Well Sampling for Coliform and Nitrate

Installation Report for Water Well Pumps - PDF
Application for Permit to Construct, Modify or Abandon a Water Well - Fillable PDF*
Water Well Construction Report - Fillable PDF*
Water Well Construction Report Instructions - Fillable PDF*
Water Well Sealing Form - Fillable PDF*

77 Ill. Adm. Code Part 915 The Illinois Water Well and Pump Installation Contractor's License Code
77 Ill. Adm. Code Part 920 Illinois Water Well Construction Code
77 Ill. Adm. Code Part 925 Illinois Water Well Pump Installation Code

NOTE: In order to view PDF documents,
you need a copy of the Adobe Acrobat Reader software.