---
type: "Bill"
title: "Environment - On-Site Wastewater Services - Regulation"
description: "Environment - On-Site Wastewater Services - Regulation"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2022"
identifier: "HB 318"
citation: "Maryland HB 318 (2022)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Stein"]
version_count: 3
action_count: 13
vote_count: 2
first_action: "2022-01-19"
last_action: "2022-05-16"
source: "openstates"
source_identifier: "ocd-bill/7aaa278f-e3df-4840-8949-b0d593fe0edb"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0318?ys=2022RS&search=True"
source_hash: "5e858f96024b8004bd6ac0bf310b8e2f94fabb9c9fbf71d38a747affd7350152"
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 318 (2022) — Environment - On-Site Wastewater Services - Regulation

## Version chain

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

1. **Chapter - Environment - On-Site Wastewater Services - Regulation** (committee substitute) — [source](http://mgaleg.maryland.gov/2022RS/Chapters_noln/CH_419_hb0318t.pdf)
2. **First - Environment - On-Site Wastewater Services - Regulation** (committee substitute) — [source](http://mgaleg.maryland.gov/2022RS/bills/hb/hb0318f.pdf)
3. **Third - Environment - On-Site Wastewater Services - Regulation** (committee substitute) — [source](http://mgaleg.maryland.gov/2022RS/bills/hb/hb0318t.pdf)

## Votes

- On Third Reading — **95–40** (pass) · lower
- On Third Reading — **32–10** (pass) · upper

## Sponsors

- Stein — primary (person)

## Timeline

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

- **2022-01-19** First Reading Environment and Transportation `referral-committee`
- **2022-01-25** Hearing 2/09 at 1:00 p.m.
- **2022-03-16** Favorable with Amendments Report by Environment and Transportation `committee-passage-favorable`
- **2022-03-16** Favorable with Amendments { `committee-passage-favorable`
- **2022-03-16** Second Reading Passed with Amendments
- **2022-03-17** Third Reading Passed `passage`
- **2022-03-17** Referred Education, Health, and Environmental Affairs `referral-committee`
- **2022-04-09** Favorable Report by Education, Health, and Environmental Affairs `committee-passage-favorable`
- **2022-04-09** Favorable Adopted `committee-passage-favorable`
- **2022-04-09** Second Reading Passed
- **2022-04-09** Third Reading Passed `passage`
- **2022-04-09** Returned Passed
- **2022-05-16** Approved by the Governor - Chapter 419 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/7aaa278f-e3df-4840-8949-b0d593fe0edb`. Confidence: reported (aggregated from official Maryland legislature records).