# Arizona SB 1521: unbuilt certificates; assured water supply

Arizona SB 1521, unbuilt certificates; assured water supply, is a Fifty-seventh Legislature - First Regular Session Senate bill sponsored by Timothy "Tim" Dunn (Republican); status signed, last action 2025-05-06 (Final Reading: Passed) (as of 2026-10-27).

- Canonical: https://policyrisk.com/state-bill/AZ-SB1521-57th-1st-regular
- As of: 2026-10-27
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: Arizona SB 1521
- State: Arizona
- Session: Fifty-seventh Legislature - First Regular Session
- Title: unbuilt certificates; assured water supply
- Status: signed
- Chamber: Senate
- Introduced: 2025-02-11
- Last action: 2025-05-06, Final Reading: Passed
- Sponsor: Timothy "Tim" Dunn (Republican)
- Cosponsors: 0
- Subjects: aggregation, assured water supply, certificates of assured water supply, definitions, excess expenditures (h), expenditure limitation (h), groundwater management, retroactivity (h), sale, strike everything amendment (h), town of wellton (h), transfer, unbuilt certificates, waters - title 45
- Touches household money: no
- Roll calls: 7 (115 yes, 21 no in all)
- Economic provisions PRIA read: 0

## Summary

No summary available.

## Bill overview

No economic impacts identified for this bill.

## Sponsors and cosponsors

- Sponsor: Timothy "Tim" Dunn (Republican), Senate

## Roll call votes

| Date | Chamber | Motion | Result | Yes | No | Other |
| --- | --- | --- | --- | --- | --- | --- |
| 2025-05-06 | Senate | FINAL: Passed | pass | 25 | 3 |   |
| 2025-05-06 | Senate | CONCUR: Passed | fail |   |   |   |
| 2025-04-28 | Senate | THIRD: Passed | pass | 51 | 5 |   |
| 2025-04-14 | Senate | C&P | pass | 8 | 0 |   |
| 2025-03-25 | Senate | DPA/SE | pass | 9 | 0 |   |
| 2025-03-13 | Senate | THIRD: Passed | pass | 17 | 11 |   |
| 2025-02-11 | Senate | DP | pass | 5 | 2 |   |

## Actions (10)

- 2025-05-06: Final Reading: Passed (Senate)
- 2025-05-06: Concurrence: Passed (Senate)
- 2025-04-28: Third Reading: Passed (Senate)
- 2025-04-17: Committee of the Whole: do pass amended (Senate)
- 2025-04-14: undefined: C&P (Senate)
- 2025-03-25: undefined: DPA/SE (Senate)
- 2025-03-13: Third Reading: Passed (Senate)
- 2025-03-10: Committee of the Whole: do pass (Senate)
- 2025-02-17: undefined: PFC (Senate)
- 2025-02-11: undefined: DP (Senate)

## Bill text

- Chaptered Version: [HTML](https://www.azleg.gov/legtext/57leg/1R/laws/0162.htm), [PDF](https://apps.azleg.gov/BillStatus/GetDocumentPdf/530398)
- House Engrossed Version: [HTML](https://www.azleg.gov/legtext/57leg/1R/bills/SB1521H.htm), [PDF](https://apps.azleg.gov/BillStatus/GetDocumentPdf/529429)
- Introduced Version: [HTML](https://www.azleg.gov/legtext/57leg/1R/bills/SB1521P.htm), [PDF](https://apps.azleg.gov/BillStatus/GetDocumentPdf/522667)
- Senate Engrossed Version: [HTML](https://www.azleg.gov/legtext/57leg/1R/bills/SB1521S.htm), [PDF](https://apps.azleg.gov/BillStatus/GetDocumentPdf/527315)

## Related bills

- SB 1537: transitional housing; reentry programs; licensure (signed)
- SB 1496: tax credit; qualifying charitable organizations (signed)
- HB 2036: ASRS; temporary personnel service (signed)
- SB 1742: 2025-2026; higher education (signed)
- HB 2034: ASRS; supplemental employee deferral plan (signed)
- SB 1735: 2025-2026; general appropriations act (signed)

## Sources
- [Chaptered Version (HTML)](https://www.azleg.gov/legtext/57leg/1R/laws/0162.htm)
- [Chaptered Version (PDF)](https://apps.azleg.gov/BillStatus/GetDocumentPdf/530398)
- [House Engrossed Version (HTML)](https://www.azleg.gov/legtext/57leg/1R/bills/SB1521H.htm)
- [House Engrossed Version (PDF)](https://apps.azleg.gov/BillStatus/GetDocumentPdf/529429)
- [Introduced Version (HTML)](https://www.azleg.gov/legtext/57leg/1R/bills/SB1521P.htm)
- [Introduced Version (PDF)](https://apps.azleg.gov/BillStatus/GetDocumentPdf/522667)
- [Senate Engrossed Version (HTML)](https://www.azleg.gov/legtext/57leg/1R/bills/SB1521S.htm)
- [Senate Engrossed Version (PDF)](https://apps.azleg.gov/BillStatus/GetDocumentPdf/527315)

## Related
- [SB 1537: transitional housing; reentry programs; licensure](https://policyrisk.com/state-bill/AZ-SB1537-57th-1st-regular)
- [SB 1496: tax credit; qualifying charitable organizations](https://policyrisk.com/state-bill/AZ-SB1496-57th-1st-regular)
- [HB 2036: ASRS; temporary personnel service](https://policyrisk.com/state-bill/AZ-HB2036-57th-1st-regular)
- [SB 1742: 2025-2026; higher education](https://policyrisk.com/state-bill/AZ-SB1742-57th-1st-regular)
- [HB 2034: ASRS; supplemental employee deferral plan](https://policyrisk.com/state-bill/AZ-HB2034-57th-1st-regular)
- [SB 1735: 2025-2026; general appropriations act](https://policyrisk.com/state-bill/AZ-SB1735-57th-1st-regular)
- [Arizona bills](https://policyrisk.com/states/arizona/bills)
- [Arizona state hub](https://policyrisk.com/states/arizona)
- [All state legislation](https://policyrisk.com/state-bills)

Source: PRIA, https://policyrisk.com/state-bill/AZ-SB1521-57th-1st-regular (as of 2026-10-27).