Code of Maine Rules
10 - DEPARTMENT OF HEALTH AND HUMAN SERVICES
144 - DEPARTMENT OF HEALTH AND HUMAN SERVICES - GENERAL
Chapter 232 - WELL DRILLERS AND PUMP INSTALLERS RULES
Chapter 4 - NEW WATER WELL CONSTRUCTION
Section 144-232-4-405.0 - STANDARD PRACTICE FOR DISINFECTION
Universal Citation: 10 ME Code Rules ยง 144-232-4-405.0
Current through 2024-38, September 18, 2024
405.1 General: Water used for the development of gravel wells, or water used hydrofracturing bedrock wells will be chlorinated or potable.
405.2 New well disinfection: All new wells shall be chlorinated to a minimum concentration of 50 PPM for a minimum of 4 hours upon completion of the well. See table 405.1 for the recommended amounts of chlorine bleach.
Table 405.1
Recommended chlorine dosages using 5.25% chlorine bleach
| Diameter of the well | Amount of chlorine bleach needed for each 100 feet of water depth |
| 2 inches | 2 ounces |
| 4 inches | 9 ounces |
| 6 inches | 20 ounces |
| 8 inches | 34 ounces |
| 12 inches | 80 ounces |
| 24 inches | 298 ounces |
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