---
type: "Bill"
title: "Mississippi Individual On-site Wastewater Disposal System Law; extend repealer on."
description: "Mississippi Individual On-site Wastewater Disposal System Law; extend repealer on."
jurisdiction: "us/states/ms"
legislature: "Mississippi Legislature"
session: "2023"
identifier: "HB 522"
citation: "Mississippi HB 522 (2023)"
classification: ["bill"]
subjects: ["Public Health and Human Services", "Public Health and Welfare"]
status: "enacted"
primary_sponsors: ["Roberson"]
version_count: 4
action_count: 12
vote_count: 2
first_action: "2023-01-13T06:00:00+00:00"
last_action: "2023-03-21T05:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/549b5e66-e76b-4fcf-bb14-0cdfdf85f8cd"
source_url: "http://billstatus.ls.state.ms.us/2023/pdf/House_authors/Roberson.xml"
source_hash: "04da4e19d3e0299192209ebd80a20cc982d6cfafb1d5ecee35c2a8986d4fcddc"
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-ms"]
---

# Mississippi HB 522 (2023) — Mississippi Individual On-site Wastewater Disposal System Law; extend repealer on.

## Version chain

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

1. **As Introduced** (filed) — [source](http://billstatus.ls.state.ms.us/documents/2023/html/HB/0500-0599/HB0522IN.htm)
2. **As Passed the lower** (committee substitute) — [source](http://billstatus.ls.state.ms.us/documents/2023/html/HB/0500-0599/HB0522PS.htm)
3. **Committee Substitute** (committee substitute) — [source](http://billstatus.ls.state.ms.us/documents/2023/html/HB/0500-0599/HB0522CS.htm)
4. **Current version** (committee substitute) — [source](http://billstatus.ls.state.ms.us/documents/2023/html/HB/0500-0599/HB0522SG.htm)

## Votes

- Passage — **117–0** (pass) · lower
- Passage — **52–0** (pass) · upper

## Sponsors

- Roberson — primary (person)

## Timeline

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

- **2023-01-13T06:00:00+00:00** Referred To Public Health and Human Services `referral-committee`
- **2023-01-19T06:00:00+00:00** Title Suff Do Pass Comm Sub `committee-passage`
- **2023-02-01T06:00:00+00:00** Committee Substitute Adopted `substitution`
- **2023-02-01T06:00:00+00:00** Passed `passage`
- **2023-02-02T06:00:00+00:00** Transmitted To Senate `introduction`
- **2023-02-15T06:00:00+00:00** Referred To Public Health and Welfare `referral-committee`
- **2023-02-28T06:00:00+00:00** Title Suff Do Pass `committee-passage`
- **2023-03-08T06:00:00+00:00** Passed `passage`
- **2023-03-09T06:00:00+00:00** Returned For Enrolling
- **2023-03-14T05:00:00+00:00** Enrolled Bill Signed
- **2023-03-14T05:00:00+00:00** Enrolled Bill Signed
- **2023-03-21T05:00:00+00:00** Approved by Governor `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/549b5e66-e76b-4fcf-bb14-0cdfdf85f8cd`. Confidence: reported (aggregated from official Mississippi legislature records).