---
type: "Bill"
title: "Environmental matters."
description: "Provides that the environmental rules board may adopt rules establishing requirements for the reclamation and reuse of treated wastewater. Requires certain entities to: (1) conduct an annual public water system cybersecurity vulnerability assessment; (2) annually provide the office of technology with the name and contact information of any individual who will act as the primary reporter of a cybersecurity incident; (3) submit an annual certification to the department of environmental management via a secured portal verifying certain information; and (4) when an actual or suspected cybersecurity breach occurs, report the incident to the office of technology."
jurisdiction: "us/states/in"
legislature: "Indiana General Assembly"
session: "2025"
identifier: "SB 459"
citation: "Indiana SB 459 (2025)"
classification: ["bill"]
subjects: ["AGENCIES; Department of Environmental Management (IDEM)", "AGENCIES; Office of Technology (IOT)", "BOARDS", "COMMISSIONS", "AND COUNCILS; Generally", "ENVIRONMENT; Water Pollution", "TECHNOLOGY; Cyber Security", "Data Privacy", "and Identity Theft", "UTILITIES; Water"]
status: "enacted"
primary_sponsors: ["Andy Zay", "Beau Baird", "Justin Busch", "Rick Niemeyer"]
version_count: 4
action_count: 25
vote_count: 3
first_action: "2025-01-13"
last_action: "2025-05-01"
source: "openstates"
source_identifier: "ocd-bill/d15123c2-40c3-42bb-b4e6-0a1aa0252385"
source_url: "https://api.iga.in.gov/2025/bills/sb0459"
source_hash: "c76df9ce3f5bc2bf5cd28beb3188012f5fe170ffa3d47c6aeb739a9a804080b4"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-in"]
---

# Indiana SB 459 (2025) — Environmental matters.

Provides that the environmental rules board may adopt rules establishing requirements for the reclamation and reuse of treated wastewater. Requires certain entities to: (1) conduct an annual public water system cybersecurity vulnerability assessment; (2) annually provide the office of technology with the name and contact information of any individual who will act as the primary reporter of a cybersecurity incident; (3) submit an annual certification to the department of environmental management via a secured portal verifying certain information; and (4) when an actual or suspected cybersecurity breach occurs, report the incident to the office of technology.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Enrolled Senate Bill (S)** (committee substitute) — [source](https://iga.in.gov/pdf-documents/124/2025/senate/bills/SB0459/SB0459.04.ENRH.pdf)
2. **Introduced Senate Bill (S)** (committee substitute) — [source](https://iga.in.gov/pdf-documents/124/2025/senate/bills/SB0459/SB0459.01.INTR.pdf)
3. **Senate Bill (H)** (committee substitute) — [source](https://iga.in.gov/pdf-documents/124/2025/senate/bills/SB0459/SB0459.02.COMS.pdf)
4. **Senate Bill (S)** (committee substitute) — [source](https://iga.in.gov/pdf-documents/124/2025/senate/bills/SB0459/SB0459.03.COMH.pdf)

## Votes

- SB 459 - Niemeyer - 3rd Reading — **48–0** (pass) · upper
- SB 459 - Niemeyer — **39–0** (pass) · upper
- SB 459 - Baird - 3rd Reading — **95–0** (pass) · lower

## Sponsors

- Andy Zay — primary (person)
- Beau Baird — primary (person)
- Justin Busch — primary (person)
- Rick Niemeyer — primary (person)
- Carolyn Jackson — cosponsor (person)
- Kyle Pierce — cosponsor (person)
- Lonnie Randolph — coauthor (person)
- Sue Errington — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2025-01-13** First reading: referred to Committee on Environmental Affairs `reading-1, referral-committee`
- **2025-01-13** Authored by Senator Niemeyer
- **2025-02-04** Senator Zay added as third author
- **2025-02-04** Committee report: amend do pass, adopted `committee-passage`
- **2025-02-04** Senator Busch added as second author
- **2025-02-06** Senator Randolph added as coauthor
- **2025-02-06** Second reading: ordered engrossed `reading-2`
- **2025-02-12** Referred to the House `referral`
- **2025-02-11** House sponsor: Representative Baird
- **2025-02-11** Third reading: passed; Roll Call 111: yeas 48, nays 0 `passage, reading-3, reading-3`
- **2025-03-03** First reading: referred to Committee on Environmental Affairs `reading-1, referral-committee`
- **2025-04-03** Representative Errington added as cosponsor
- **2025-04-03** Representative Pierce K added as cosponsor
- **2025-04-03** Committee report: amend do pass, adopted `committee-passage`
- **2025-04-07** Representative Jackson C added as cosponsor
- **2025-04-07** Second reading: ordered engrossed `reading-2`
- **2025-04-09** Third reading: passed; Roll Call 414: yeas 95, nays 0 `passage, reading-3, reading-3`
- **2025-04-10** Returned to the Senate with amendments `receipt`
- **2025-04-14** Motion to concur filed `filing`
- **2025-04-16** Senate concurred with House amendments; Roll Call 463: yeas 39, nays 0
- **2025-04-17** Signed by the President Pro Tempore `passage`
- **2025-04-22** Signed by the Speaker `passage`
- **2025-04-23** Signed by the President of the Senate `passage`
- **2025-05-01** Public Law 139 `became-law`
- **2025-05-01** Signed by the Governor `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/d15123c2-40c3-42bb-b4e6-0a1aa0252385`. Confidence: reported (aggregated from official Indiana legislature records).