---
type: "Bill"
title: "Pesticides - PFAS Testing - Study"
description: "Pesticides - PFAS Testing - Study"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2023"
identifier: "SB 158"
citation: "Maryland SB 158 (2023)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Hettleman"]
version_count: 3
action_count: 13
vote_count: 0
first_action: "2023-01-18"
last_action: "2023-05-08"
source: "openstates"
source_identifier: "ocd-bill/c0ccc1ce-0a09-499e-8cab-d0ba0e0e8512"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0158?ys=2023RS&search=True"
source_hash: "c4c1d1cd78b3046270643d4aebbad1d0dd8f83c9d6ff8c01a8009b05f5a009e7"
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 SB 158 (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_485_sb0158t.pdf)
2. **First - Pesticide Registration - PFAS Testing - Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2023RS/bills/sb/sb0158f.pdf)
3. **Third - Pesticides - PFAS Testing - Study** (committee substitute) — [source](http://mgaleg.maryland.gov/2023RS/bills/sb/sb0158t.pdf)

## Sponsors

- Hettleman — primary (person)

## Timeline

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

- **2023-01-18** First Reading Education, Energy, and the Environment `referral-committee`
- **2023-01-19** Hearing 2/02 at 2:00 p.m.
- **2023-03-27** Favorable with Amendments Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2023-03-27** Favorable with Amendments { `committee-passage-favorable`
- **2023-03-27** Second Reading Passed with Amendments
- **2023-03-28** Third Reading Passed `passage`
- **2023-03-29** Referred Rules and Executive Nominations `referral-committee`
- **2023-04-05** Rereferred to Health and Government Operations
- **2023-04-08** Favorable Report by Health and Government Operations `committee-passage-favorable`
- **2023-04-08** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2023-04-10** Third Reading Passed `passage`
- **2023-04-10** Returned Passed
- **2023-05-08** Approved by the Governor - Chapter 485 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/c0ccc1ce-0a09-499e-8cab-d0ba0e0e8512`. Confidence: reported (aggregated from official Maryland legislature records).