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C-23 Drilling Wells (2026-03-25)
A person who holds a classification C-23 license may install and repair water wells, pressure tanks, storage tanks and pumps by boring, drilling, excavating, casing, cementing, dewatering and cleaning to provide a supply of uncontaminated water.
45 Questions
70% Minimum Passing Score
1½ Hours
The reference material listed below was used to prepare the questions for this examination. The examination may also contain questions based on trade knowledge or general industry practices. Except for Code books, you can base your answers on later editions of references as they become available. For Code questions, the examinations will be based only on the edition of the Code book that is listed.
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Open Book These books are allowed while taking your test.
Closed Book These books are for pre-test study only and are not available for use during the test.
In Stock These books are currently in stock.
Out of Stock These books are currently out of stock.
Closed Book These books are for pre-test study only and are not available for use during the test.
In Stock These books are currently in stock.
Out of Stock These books are currently out of stock.
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Closed Book In Stock
Water Well Driller's Beginning Training Manual
3rd Edition
Publication Year: 1996
$36.50
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Closed Book In Stock
Manual Of Water Well Construction Practices, 3rd Edition
3rd Edition
$60.00
This is a third edition of a perennially best-selling manual, originally published in 1975 and revised in 1998 and 2017.
It is comprehensive in its scope of current well construction methods and designed to serve not only contractors, but also as a guideline for state well inspectors.
The most recent revision includes updates to practices in line with current industry standards.
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Closed Book In Stock
Code of Federal Regulations, 29 CFR Part 1926 (OSHA) 2026
Publication Year: 2026
$37.00
Our OSHA 29 CFR 1926 Construction Regulations book gives you quick, easy access to essential safety guidance whenever you need it. It helps employers and workers identify hazards fast and stay compliant on any jobsite. The 2026 edition features a clear two-color layout, includes all 1926 regulations along with key 1903, 1904, and select 1910 rules, and highlights any regulation changes between editions. Icons make it simple to find OSHA interpretations, and the book also includes OSHA Form 300, the Cancer Policy, and In-Cite references to 1910 standards. Frequently cited standards are placed before their related subparts for even easier navigation.
