---
type: "Bill"
title: "WATER/DRINKING WATER: Authorizes St. Tammany Parish to require testing for secondary contaminants in drinking water"
description: "WATER/DRINKING WATER: Authorizes St. Tammany Parish to require testing for secondary contaminants in drinking water"
jurisdiction: "us/states/la"
legislature: "Louisiana Legislature"
session: "2021"
identifier: "HB 342"
citation: "Louisiana HB 342 (2021)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Mark Wright"]
version_count: 4
action_count: 19
vote_count: 2
first_action: "2021-03-31"
last_action: "2021-06-14"
source: "openstates"
source_identifier: "ocd-bill/3572b671-e5f1-4bcd-adfe-8ca8b4558e93"
source_url: "http://www.legis.la.gov/Legis/BillInfo.aspx?i=240233"
source_hash: "ebd61a65bc578374b91ad14350fda61d58a931ed2a7d96c9f89ec96f53b09c60"
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-la"]
---

# Louisiana HB 342 (2021) — WATER/DRINKING WATER: Authorizes St. Tammany Parish to require testing for secondary contaminants in drinking water

## Version chain

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

1. **HB342 Original** (filed) — [source](http://www.legis.la.gov/Legis/ViewDocument.aspx?d=1209739)
2. **HB342 Act** (committee substitute) — [source](http://www.legis.la.gov/Legis/ViewDocument.aspx?d=1235542)
3. **HB342 Engrossed** (committee substitute) — [source](http://www.legis.la.gov/Legis/ViewDocument.aspx?d=1224516)
4. **HB342 Enrolled** (enrolled) — [source](http://www.legis.la.gov/Legis/ViewDocument.aspx?d=1232838)

## Votes

- FINAL PASSAGE (#817) — **37–0** (pass) · upper
- FINAL PASSAGE (#540) — **87–0** (pass) · lower

## Sponsors

- Mark Wright — primary (person)

## Timeline

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

- **2021-06-14** Effective date: 06/14/2021.
- **2021-06-14** Signed by the Governor. Becomes Act No. 308. `executive-signature`
- **2021-06-11** Sent to the Governor for executive approval. `executive-receipt`
- **2021-06-09** Signed by the President of the Senate.
- **2021-06-08** Enrolled and signed by the Speaker of the House.
- **2021-06-07** Received from the Senate without amendments.
- **2021-06-06** Rules suspended. Read by title, passed by a vote of 37 yeas and 0 nays, and ordered returned to the House. Motion to reconsider tabled. `passage`
- **2021-06-03** Reported without Legislative Bureau amendments. Read by title and passed to third reading and final passage.
- **2021-06-03** Rules suspended. Reported favorably. Rules suspended. Read by title and referred to the Legislative Bureau.
- **2021-05-24** Read second time by title and referred to the Committee on Local and Municipal Affairs. `referral-committee`
- **2021-05-20** Received in the Senate. Read first time by title and placed on the Calendar for a second reading.
- **2021-05-19** Read third time by title, roll called on final passage, yeas 87, nays 0. Finally passed, title adopted, ordered to the Senate. `passage`
- **2021-05-18** Scheduled for floor debate on 05/19/2021.
- **2021-05-17** Read by title, ordered engrossed, passed to 3rd reading.
- **2021-05-13** Reported favorably (10-0).
- **2021-04-20** Read by title, under the rules, referred to the Committee on Municipal, Parochial and Cultural Affairs. `referral-committee`
- **2021-04-19** Read by title. Lies over under the rules.
- **2021-04-02** First appeared in the Interim Calendar on 4/2/2021.
- **2021-03-31** Prefiled. To be introduced at a later date. `filing`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/3572b671-e5f1-4bcd-adfe-8ca8b4558e93`. Confidence: reported (aggregated from official Louisiana legislature records).