Arizona Revised Statutes
Title 45 - Waters
§ 45-802.01; Version 2 - Definitions

45-802.01. Definitions
(L19, Ch. 1, sec. 10. Eff. 1/1/25)
Unless the context otherwise requires, the terms defined in section 45-402 have the same meanings in this chapter and:
1. " Aquifer" means a geologic formation that contains sufficient saturated material to be capable of storing water and transmitting water in usable quantities to a well.
2. " Area of impact" means, as projected on the land surface, the area where the stored water has migrated or is located.
3. " CERCLA" means the comprehensive environmental response, compensation, and liability act of 1980, as amended (P.L. 96-510; 94 Stat. 2767; 42 United States Code sections 9601 through 9657), commonly known as " superfund" .
4. " Constructed underground storage facility" means a facility that meets the requirements of section 45-811.01 and that is designed and constructed to store water underground pursuant to permits issued under this chapter.
5. " District" means a groundwater replenishment district established under title 48, chapter 27.
6. " District member" means a member of the groundwater replenishment district as provided by title 48, chapter 27.
7. " Electrical district" means a corporate body established pursuant to title 48, chapter 12.
8. " Existing effluent managed underground storage facility" means a managed underground storage facility that meets one of the following conditions:
(a) The facility is operated pursuant to a storage facility permit that the director issued before January 1, 2019 and that authorizes the storage of effluent at the facility.
(b) The facility is operated pursuant to a renewed or modified storage facility permit that the director issued after January 1, 2019 if the facility qualified as an existing effluent managed underground storage facility under subdivision (a), (c) or (d) of this paragraph at any time before the renewal or modification.
(c) The facility is operated pursuant to a permit that the director issued after January 1, 2019 and that authorizes the storage of effluent at a location where the permit holder was authorized to store effluent pursuant to a storage facility permit that the director issued before January 1, 2019.
(d) The facility is operated pursuant to a permit that the director issued after January 1, 2019 and that authorizes the storage of effluent at the facility, and the application to operate the facility was on file with the director as of January 1, 2019.
9. " Groundwater savings facility" means a facility that meets the requirements of section 45-812.01 in an active management area or an irrigation non-expansion area at which groundwater withdrawals are eliminated or reduced by recipients who use in lieu water on a gallon-for-gallon substitute basis for groundwater that otherwise would have been pumped from within that active management area or irrigation non-expansion area.
10. " In lieu water" means water that is delivered by a storer to a groundwater savings facility pursuant to permits issued under this chapter and that is used in an active management area or an irrigation non-expansion area by the recipient on a gallon-for-gallon substitute basis for groundwater that otherwise would have been pumped from within that active management area or irrigation non-expansion area.
11. " Long-term storage account" means an account established pursuant to section 45-852.01.
12. " Long-term storage credit" means stored water that meets the requirements of section 45-852.01 and that has been credited to a long-term storage account.
13. " Managed underground storage facility" means a facility that meets the requirements of section 45-811.01 and that is designed and managed to utilize the natural channel of a stream to store water underground pursuant to permits issued under this chapter through artificial and controlled releases of water other than surface water naturally present in the stream. Surface water flowing in its natural channel is not a managed underground storage facility.
14. " Master replenishment account" means an account established pursuant to section 45-858.01 for a groundwater replenishment district.
15. " Recipient" means a person who receives in lieu water for use at a groundwater savings facility.
16. " Recoverable amount" means the amount of water, as determined by the director, that will reach the aquifer through water storage.
17. " Replenishment" means the storage of water or use of long-term storage credits by a groundwater replenishment district to fulfill its duties under title 48, chapter 27, article 3, by a multi-county water conservation district to fulfill its duties under title 48, chapter 22, article 4 or by an active management area water district to fulfill its duties under title 48, chapter 28, article 7.
18. " Reserve target" has the same meaning prescribed in section 48-3701.
19. " Storage facility" means a groundwater savings facility or an underground storage facility.
20. " Stored water" means water that has been stored or saved underground pursuant to a storage permit issued under this chapter.
21. " Storer" means the holder of a water storage permit issued pursuant to section 45-831.01 or a person to whom a water storage permit has been conveyed pursuant to section 45-831.01, subsection F.
22. " Underground storage facility" means a constructed underground storage facility or a managed underground storage facility.
23. " Water that cannot reasonably be used directly" means water that the storer cannot reasonably put to a direct use during the calendar year, including:
(a) Except as provided in subdivision (b) or except for an agricultural improvement district as provided in subdivision (d), if the storer is a municipal provider, the amount of central Arizona project water that exceeds the amount of mined groundwater withdrawn during the calendar year by the storer in the active management area in which the storer's service area is located. If the storer withdrew mined groundwater during a calendar year in which the storer stored central Arizona project water underground pursuant to the storage permit, the amount of central Arizona project water stored underground during that year equal to the amount of mined groundwater withdrawn from the active management area in which the storer's service area is located shall not be credited to the storer's long-term storage account but may be considered as being available for recovery by the storer on an annual basis under section 45-851.01. In calculating the amount of mined groundwater withdrawn by the storer from the active management area, the director, at the request of the storer, shall exclude any groundwater withdrawn, treated and delivered for direct use as part of a remedial action undertaken pursuant to CERCLA or title 49, chapter 2, article 5. For the purposes of this subdivision, " mined groundwater" and " municipal provider" have the same meanings prescribed in section 45-561.
(b) If the storer is a municipal provider that has been designated as having an assured water supply pursuant to section 45-576, the amount of central Arizona project water that exceeds the amount of deficit groundwater withdrawn during the calendar year by the storer in the active management area in which the storer's service area is located. If the storer withdrew deficit groundwater during a calendar year in which the storer stored central Arizona project water underground pursuant to the storage permit, the amount of the central Arizona project water stored underground during that year equal to the amount of deficit groundwater withdrawn from the active management area in which the storer's service area is located shall not be credited to the storer's long-term storage account but may be considered as being available for recovery by the storer on an annual basis pursuant to section 45-851.01. In calculating the amount of deficit groundwater withdrawn by the storer from the active management area, the director, at the request of the storer, shall exclude any groundwater withdrawn, treated and delivered for direct use as part of a remedial action undertaken pursuant to CERCLA or title 49, chapter 2, article 5. For the purposes of this subdivision, " municipal provider" has the same meaning prescribed in section 45-561 and " deficit groundwater" means that amount of groundwater withdrawn within an active management area for delivery and use within a service area by a municipal provider in excess of the amount of groundwater that may be withdrawn by the municipal provider consistent with the achievement of the active management area's management goals as prescribed by rules adopted by the director pursuant to section 45-576.
(c) Except as provided in subdivision (d), if the storer is not a municipal provider, the amount of central Arizona project water stored in an active management area that exceeds the amount of groundwater withdrawn during the calendar year by the storer in that active management area. If the storer withdrew groundwater in an active management area during a calendar year in which the storer stored central Arizona project water underground in that active management area pursuant to the storage permit, the amount of central Arizona project water stored underground during that year equal to the amount of groundwater withdrawn from the active management area shall not be credited to the storer's long-term storage account but may be considered as being available for recovery by the storer on an annual basis under section 45-851.01. For the purposes of this subdivision, " municipal provider" has the same meaning prescribed in section 45-561. In calculating the amount of groundwater withdrawn by the storer from the active management area, the director, at the request of the storer, shall exclude:
(i) The amount of any groundwater withdrawn, treated and delivered for direct use as part of a remedial action undertaken pursuant to CERCLA or title 49, chapter 2, article 5.
(ii) The amount of groundwater withdrawn by the storer during the year for mineral extraction or metallurgical processing if the storer was engaged in mineral extraction and metallurgical processing within an initial active management area on or before January 1, 2011.
(d) The amount of central Arizona project water stored in an active management area in any year after 1994 by an agricultural improvement district established pursuant to title 48, chapter 17 for use at those portions of electrical generating facilities that are constructed or expanded after June 12, 1980, subject to both of the following:
(i) If groundwater was used during a year in an active management area at those portions of the electrical generating facilities that were owned and operated by the agricultural improvement district and that were constructed or expanded after June 12, 1980, the amount of the central Arizona project water stored during that year equal to the amount of the groundwater withdrawn during the year for use at those portions of the facilities that were owned and operated by the agricultural improvement district and that were constructed or expanded after June 12, 1980 shall not be credited to the agricultural improvement district's long-term storage account but may be considered as being available for recovery by the agricultural improvement district on an annual basis under section 45-851.01.
(ii) Long-term storage credits accrued as a result of the storage of the central Arizona project water may be recovered within the active management area by the agricultural improvement district only for the purpose of providing central Arizona project water to electrical generating facilities that were owned and operated by the agricultural improvement district and only pursuant to any water requirement included in a facility's certificate of environmental compatibility. Subject to section 45-854.01, the long-term storage credits may be assigned by the agricultural improvement district only to the owner of an electrical generating facility for use pursuant to any water requirement included in that facility's certificate of environmental compatibility.
(e) Surface water made available by dams constructed or modified after August 13, 1986.
(f) Effluent.
(g) If the storage facility is in an active management area, water from outside the active management area that would not have reached the active management area without the efforts of the storer.
(h) If the storage facility is outside of an active management area, water from outside the groundwater basin in which the storage facility is located that would not have reached the groundwater basin without the efforts of the storer.
(i) Water that is delivered through the central Arizona project and that is acquired by the Arizona water banking authority.
24. " Water storage" means adding water to an aquifer or saving water in an aquifer pursuant to permits issued under this chapter.
25. " Water storage permit" means a permit issued pursuant to section 45-831.01 to store water at a storage facility.

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