republic-os/legislation/us/states/in/2023/sb-473.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	Limits on discharges into the Ohio River.	Provides that if a community water system that discharges wastewater into the Ohio River demonstrates to the satisfaction of the department of environmental management that the discharged wastewater does not increase the mass of mercury in the Ohio River by an amount greater than the mass of mercury in the water withdrawn from the Ohio River by the community water system: (1) the community water system's discharge into the Ohio River shall not be considered to cause, have a reasonable potential to cause, or contribute to an excursion above any applicable water quality standard governing mercury in the Ohio River; and (2) no water quality-based effluent limitations for mercury shall be required in a new or renewal NPDES permit issued to the community water system.	us/states/in	Indiana General Assembly	2023	SB 473	Indiana SB 473 (2023)	bill	ENVIRONMENTAL MANAGEMENT DEPARTMENT AND AGENCIES RIVERS AND STREAMS WATER Pollution	enacted	James Tomes Rick Niemeyer Timothy O'Brien Vaneta Becker	6	24	1	2023-01-19	2023-05-01	openstates	ocd-bill/3577b4a7-e020-4fad-9942-b9ca7e5f74c8	http://iga.in.gov/legislative/2023/bills/senate/473	17d10800c06fddd5b8ce6d1e6f6369897c4b7a4690df92e5c38e9ff55454bd74	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-in

Indiana SB 473 (2023) — Limits on discharges into the Ohio River.

Provides that if a community water system that discharges wastewater into the Ohio River demonstrates to the satisfaction of the department of environmental management that the discharged wastewater does not increase the mass of mercury in the Ohio River by an amount greater than the mass of mercury in the water withdrawn from the Ohio River by the community water system: (1) the community water system's discharge into the Ohio River shall not be considered to cause, have a reasonable potential to cause, or contribute to an excursion above any applicable water quality standard governing mercury in the Ohio River; and (2) no water quality-based effluent limitations for mercury shall be required in a new or renewal NPDES permit issued to the community water system.

Version chain

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

1. Engrossed Senate Bill (S) (committee substitute) — source
2. Engrossed Senate Bill (S) (committee substitute) — source
3. Enrolled Senate Bill (S) (committee substitute) — source
4. Introduced Senate Bill (S) (committee substitute) — source
5. Senate Bill (H) (committee substitute) — source
6. Senate Bill (S) (committee substitute) — source

Votes

• SB 473 - O'Brien T - 3rd Reading — 95–2 (pass) · lower

Sponsors

• James Tomes — primary (person)
• Rick Niemeyer — primary (person)
• Timothy O'Brien — primary (person)
• Vaneta Becker — primary (person)
• Matt Hostettler — cosponsor (person)
• Ryan Hatfield — cosponsor (person)
• Wendy McNamara — cosponsor (person)

Timeline

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

• 2023-01-19 Authored by Senators Becker, Niemeyer and Tomes
• 2023-01-19 First reading: referred to Committee on Environmental Affairs reading-1, referral-committee
• 2023-02-14 Committee report: amend do pass, adopted committee-passage
• 2023-02-21 Amendment #1 (Becker) prevailed; voice vote amendment-passage
• 2023-02-21 Second reading: amended, ordered engrossed reading-2
• 2023-02-23 Pursuant to Senate Rule 35 (c); technical correction committee report adopted
• 2023-02-23 Third reading: passed; Roll Call 156: yeas 48, nays 0 passage, reading-3, reading-3
• 2023-02-23 House sponsor: Representative O'Brien
• 2023-02-23 Cosponsor: Representative Hatfield
• 2023-02-28 Referred to the House referral
• 2023-03-06 First reading: referred to Committee on Environmental Affairs reading-1, referral-committee
• 2023-03-30 Committee report: amend do pass, adopted committee-passage
• 2023-04-03 Second reading: ordered engrossed reading-2
• 2023-04-04 Representative McNamara added as cosponsor
• 2023-04-04 Representative Hostettler added as cosponsor
• 2023-04-04 Third reading: passed; Roll Call 362: yeas 95, nays 2 passage, reading-3, reading-3
• 2023-04-05 Returned to the Senate with amendments receipt
• 2023-04-05 Motion to concur filed filing
• 2023-04-10 Senate concurred in House amendments; Roll Call 360: yeas 49, nays 0
• 2023-04-13 Signed by the President Pro Tempore passage
• 2023-04-21 Signed by the Speaker passage
• 2023-04-26 Signed by the President of the Senate passage
• 2023-05-01 Public Law 116 became-law
• 2023-05-01 Signed by the Governor executive-signature

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/3577b4a7-e020-4fad-9942-b9ca7e5f74c8. Confidence: reported (aggregated from official Indiana legislature records).