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republic-os/legislation/us/states/md/2023/hb-319.md
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---
type: "Bill"
title: "Pesticides - PFAS Testing - Study"
description: "Pesticides - PFAS Testing - Study"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2023"
identifier: "HB 319"
citation: "Maryland HB 319 (2023)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Alston", "Bagnall", "Bhandari", "Cullison", "Guzzone", "Hill", "Kaiser", "Kerr", "Lopez", "Martinez", "Pena-Melnyk", "R. Lewis", "Rosenberg", "S. Johnson", "Stein", "Szeliga", "Taveras", "White", "Woods"]
version_count: 3
action_count: 14
vote_count: 0
first_action: "2023-01-25"
last_action: "2023-05-08"
source: "openstates"
source_identifier: "ocd-bill/0dc0c54c-29fe-4e4d-af44-f3642be0d848"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0319?ys=2023RS&search=True"
source_hash: "2ad8a81ffdf3625754668427aabb36c63fed85faaf2dc43e09ab36a6b2d0ff6b"
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-md"]
---
# Maryland HB 319 (2023) — Pesticides - PFAS Testing - Study
## Version chain
The bill's text revisions, in order — the diff chain from filing to enrollment.
1. **Chapter - Pesticides - PFAS Testing - Study** (committee substitute) — [source](http://mgaleg.maryland.gov/2023RS/Chapters_noln/CH_486_hb0319t.pdf)
2. **First - Pesticide Registration - PFAS Testing - Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2023RS/bills/hb/hb0319f.pdf)
3. **Third - Pesticides - PFAS Testing - Study** (committee substitute) — [source](http://mgaleg.maryland.gov/2023RS/bills/hb/hb0319t.pdf)
## Sponsors
- Alston — primary (person)
- Bagnall — primary (person)
- Bhandari — primary (person)
- Cullison — primary (person)
- Guzzone — primary (person)
- Hill — primary (person)
- Kaiser — primary (person)
- Kerr — primary (person)
- Lopez — primary (person)
- Martinez — primary (person)
- Pena-Melnyk — primary (person)
- R. Lewis — primary (person)
- Rosenberg — primary (person)
- S. Johnson — primary (person)
- Stein — primary (person)
- Szeliga — primary (person)
- Taveras — primary (person)
- White — primary (person)
- Woods — primary (person)
## Timeline
The legislative action history — every referral, reading, and vote.
- **2023-01-25** First Reading Health and Government Operations `referral-committee`
- **2023-02-07** Hearing 2/21 at 1:00 p.m.
- **2023-04-03** Favorable with Amendments Report by Health and Government Operations `committee-passage-favorable`
- **2023-04-03** Favorable with Amendments { `committee-passage-favorable`
- **2023-04-03** Second Reading Passed with Amendments
- **2023-04-04** Third Reading Passed `passage`
- **2023-04-04** Referred Rules `referral-committee`
- **2023-04-07** Rereferred to Education, Energy, and the Environment
- **2023-04-10** Favorable Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2023-04-10** Favorable Adopted `committee-passage-favorable`
- **2023-04-10** Second Reading Passed
- **2023-04-10** Third Reading Passed `passage`
- **2023-04-10** Returned Passed
- **2023-05-08** Approved by the Governor - Chapter 486 `executive-signature`
## Source
OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/0dc0c54c-29fe-4e4d-af44-f3642be0d848`. Confidence: reported (aggregated from official Maryland legislature records).