---
type: "Bill"
title: "Water Pollution Control - Discharge Permits - Animal Feeding Operations"
description: "Water Pollution Control - Discharge Permits - Animal Feeding Operations"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2026"
identifier: "SB 371"
citation: "Maryland SB 371 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Carozza", "Gallion", "Hershey", "Mautz"]
version_count: 3
action_count: 13
vote_count: 2
first_action: "2026-01-27"
last_action: "2026-04-28"
source: "openstates"
source_identifier: "ocd-bill/da163fbb-8af5-46b5-bb86-0a3703771e65"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0371?ys=2026RS"
source_hash: "38f078ca2ee149ea3588908636c66abf7715aa6760a8acd49773c3744a996611"
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 371 (2026) — Water Pollution Control - Discharge Permits - Animal Feeding Operations

## Version chain

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

1. **Chapter - Water Pollution Control - Discharge Permits - Animal Feeding Operations** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/Chapters_noln/CH_253_sb0371t.pdf)
2. **First - Water Pollution Control - Discharge Permits - Concentrated Animal Feeding Operations** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0371f.pdf)
3. **Third - Water Pollution Control - Discharge Permits - Animal Feeding Operations** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0371t.pdf)

## Votes

- On Third Reading (Emerg) — **134–0** (pass) · lower
- On Third Reading (Emerg) — **45–0** (pass) · upper

## Sponsors

- Carozza — primary (person)
- Gallion — primary (person)
- Hershey — primary (person)
- Mautz — primary (person)

## Timeline

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

- **2026-01-27** First Reading Education, Energy, and the Environment `referral-committee`
- **2026-01-28** Hearing 2/10 at 1:00 p.m.
- **2026-03-09** Favorable with Amendments Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2026-03-10** Favorable with Amendments { `committee-passage-favorable`
- **2026-03-10** Second Reading Passed with Amendments
- **2026-03-12** Third Reading Passed `passage`
- **2026-03-13** Referred Environment and Transportation `referral-committee`
- **2026-03-25** Hearing 4/01 at 1:00 p.m.
- **2026-04-08** Favorable Report by Environment and Transportation `committee-passage-favorable`
- **2026-04-09** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2026-04-13** Third Reading Passed `passage`
- **2026-04-13** Returned Passed
- **2026-04-28** Approved by the Governor - Chapter 253 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/da163fbb-8af5-46b5-bb86-0a3703771e65`. Confidence: reported (aggregated from official Maryland legislature records).