Arizona Administrative Code
Title 12 - NATURAL RESOURCES
Chapter 15 - DEPARTMENT OF WATER RESOURCES
Article 8 - WELL CONSTRUCTION AND LICENSING OFWELL DRILLERS
Section R12-15-812 - Special Aquifer Conditions
Universal Citation: AZ Admin Code R 12-15-812
Current through Register Vol. 30, No. 38, September 20, 2024
A. Artesian wells
1. The well casing shall
extend into the confining formation immediately overlying the artesian aquifer
and shall be grouted from a minimum of ten feet into the confining formation to
the land surface to prevent surface leakage into and subsurface leakage from
the artesian aquifer.
2. If leaks
occur adjacent to the well or around the well casing, within 30 days the well
shall be completed with the seals, packers, or casing and grouting necessary to
eliminate such leakage or the well shall be abandoned according to
R12-15-816.
3. If the well flows at
land surface, the well shall be equipped with a control valve, or suitable
alternative means of completely controlling the flow, which must be available
for inspection at the well site at all times.
B. Mineralized or polluted water. In all water-bearing geologic units containing mineralized or polluted water as indicated by available data, the borehole shall be cased and grouted so that contamination of the overlying or underlying groundwater zones will not occur.
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