---
type: "Bill"
title: "Mississippi Individual On-Site Wastewater Disposal System Law; extend repealer on and revise various provisions of."
description: "Mississippi Individual On-Site Wastewater Disposal System Law; extend repealer on and revise various provisions of."
jurisdiction: "us/states/ms"
legislature: "Mississippi Legislature"
session: "2018"
identifier: "HB 331"
citation: "Mississippi HB 331 (2018)"
classification: ["bill"]
subjects: ["Public Health and Human Services", "Public Health and Welfare"]
status: "enacted"
primary_sponsors: ["Mims"]
version_count: 3
action_count: 11
vote_count: 2
first_action: "2018-01-03T06:00:00+00:00"
last_action: "2018-03-09T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/e33ab192-f341-4eb7-a409-0810f91f76de"
source_url: "http://billstatus.ls.state.ms.us/2018/pdf//history/HB/HB0331.xml"
source_hash: "f30496a365ac5422d3a68432643e011f111afb9f28d61f1cf23b926e5cd3e260"
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 331 (2018) — Mississippi Individual On-Site Wastewater Disposal System Law; extend repealer on and revise various provisions of.

## 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/2018/html/HB/0300-0399/HB0331IN.htm)
2. **As Passed the lower** (committee substitute) — [source](http://billstatus.ls.state.ms.us/documents/2018/html/HB/0300-0399/HB0331PS.htm)
3. **Current version** (committee substitute) — [source](http://billstatus.ls.state.ms.us/documents/2018/html/HB/0300-0399/HB0331SG.htm)

## Votes

- Passage — **51–0** (pass) · legislature
- Passage — **113–6** (pass) · legislature

## Sponsors

- Mims — primary (person)

## Timeline

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

- **2018-01-03T06:00:00+00:00** Referred To Public Health and Human Services `referral-committee`
- **2018-01-23T06:00:00+00:00** Title Suff Do Pass `committee-passage`
- **2018-02-01T06:00:00+00:00** Passed `passage`
- **2018-02-02T06:00:00+00:00** Transmitted To Senate `introduction`
- **2018-02-12T06:00:00+00:00** Referred To Public Health and Welfare `referral-committee`
- **2018-02-26T06:00:00+00:00** Title Suff Do Pass `committee-passage`
- **2018-02-28T06:00:00+00:00** Passed `passage`
- **2018-03-01T06:00:00+00:00** Returned For Enrolling
- **2018-03-05T06:00:00+00:00** Enrolled Bill Signed
- **2018-03-05T06:00:00+00:00** Enrolled Bill Signed
- **2018-03-09T06:00:00+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/e33ab192-f341-4eb7-a409-0810f91f76de`. Confidence: reported (aggregated from official Mississippi legislature records).