---
type: "Bill"
title: "Public Safety - Maryland 9-1-1 Board and Maryland Department of Emergency Management - Regulatory Authority"
description: "Public Safety - Maryland 9-1-1 Board and Maryland Department of Emergency Management - Regulatory Authority"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2025"
identifier: "HB 423"
citation: "Maryland HB 423 (2025)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Lopez"]
version_count: 3
action_count: 11
vote_count: 1
first_action: "2025-01-16"
last_action: "2025-04-08"
source: "openstates"
source_identifier: "ocd-bill/784838b4-8d4f-4aea-80cb-96308e23314e"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0423?ys=2025RS&search=True"
source_hash: "981413fea90b5ff6a4d719d682d425f3c49b1e6e16ab98010d7184c776d30dea"
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 423 (2025) — Public Safety - Maryland 9-1-1 Board and Maryland Department of Emergency Management - Regulatory Authority

## Version chain

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

1. **Chapter - Public Safety - Maryland 9-1-1 Board and Maryland Department of Emergency Management - Regulatory Authority** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/Chapters_noln/CH_16_hb0423t.pdf)
2. **First - Public Safety - Maryland 9-1-1 Board and Maryland Department of Emergency Management - Regulatory Authority** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/hb/hb0423f.pdf)
3. **Third - Public Safety - Maryland 9-1-1 Board and Maryland Department of Emergency Management - Regulatory Authority** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/hb/hb0423t.pdf)

## Votes

- On Third Reading — **133–0** (pass) · lower

## Sponsors

- Lopez — primary (person)

## Timeline

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

- **2025-01-16** First Reading Health and Government Operations `referral-committee`
- **2025-01-21** Hearing 2/11 at 1:00 p.m.
- **2025-02-24** Favorable Report by Health and Government Operations `committee-passage-favorable`
- **2025-02-25** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2025-02-27** Third Reading Passed `passage`
- **2025-02-28** Referred Education, Energy, and the Environment `referral-committee`
- **2025-03-31** Favorable Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2025-04-02** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2025-04-03** Third Reading Passed `passage`
- **2025-04-04** Returned Passed
- **2025-04-08** Approved by the Governor - Chapter 16 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/784838b4-8d4f-4aea-80cb-96308e23314e`. Confidence: reported (aggregated from official Maryland legislature records).