County · Louisiana

St. Landry Parish, Louisiana: drinking water records

Name: Drinking water records for St. Landry Parish, Louisiana
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 28 community water systems across 13 ZIP codes in St. Landry Parish, then find water-testing resources and available recent monitoring-station readings.

In focus28Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 11 of the 28 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 28 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	Health-based violations	Lead, 9 in 10 homes at or below
City of Opelousas Water System LA1097010	20,388	120	7	2 ppbbelow the action level
Town of Leonville Water System LA1097005	9,552	180	8	2.5 ppbbelow the action level
Savoy Swords Water System INC LA1097024	7,326	120	2	1 ppbbelow the action level
Plaisance Water System LA1097012	6,465	60	2	0 ppbbelow the action level
Prairie Ronde Water System INC LA1097014	6,090	120	2	0 ppbbelow the action level
St Landry Water Works District 2 Rural LA1097033	4,761	60	2	0.9 ppbbelow the action level
Town of Sunset Water System LA1097015	4,356	120	5	0.4 ppbbelow the action level
Lawtell Water Works District No 1 LA1097004	3,717	60	1	0 ppbbelow the action level
Lawco - Eunice Water System LA1097022	15,393	120	0	2 ppbbelow the action level
Lewisburg Bellevue Water System LA1097006	8,226	60	0	0 ppbbelow the action level
Town of Port Barre Water System LA1097013	3,828	60	0	0.8 ppbbelow the action level
Village of Cankton Water System LA1097025	2,730	0	6	0 ppbbelow the action level
Mamou Road Water District, INC LA1097018	2,478	0	2	0 ppbbelow the action level
Village of Palmetto Water System LA1097011	2,178	0	25	3 ppbbelow the action level
St Landry Wwd 3 Port Barre Area D LA1097037	1,860	0	1	0 ppbbelow the action level
Town of Washington Water System LA1097016	1,713	0	4	1 ppbbelow the action level
Greenbriar Prairie Basse Water System LA1097032	1,656	0	1	0 ppbbelow the action level
Town of Grand Coteau Water System LA1097001	1,650	0	14	7 ppbbelow the action level
Town of Melville Water System LA1097007	1,314	0	5	2 ppbbelow the action level
St Landry Wwd 3 Port Barre Area B LA1097035	516	0	6	0 ppbbelow the action level
Hidden Hills Subdivision Water System LA1097026	240	0	1	0 ppbbelow the action level
Midway Water System INC LA1097008	192	0	11	1 ppbbelow the action level
Cane View Mobile Home Village LA1097031	108	0	2	0 ppbbelow the action level
Town of Krotz Springs Water System LA1097003	2,130	0	0	0 ppbbelow the action level
Morrow Water System INC LA1097009	1,572	0	0	0 ppbbelow the action level
St Landry Waterworks District No. 5 LA1097039	519	0	0	0.8 ppbbelow the action level
St Landry Wwd 3 Port Barre Area C LA1097036	351	0	0	0.4 ppbbelow the action level
St Landry Wwd 3 Port Barre Area a LA1097034	270	0	0	0 ppbbelow the action level

USGS · Monitoring stations

The water, more recently.

Available station readings in St. Landry Parish, Louisiana. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in St. Landry Parish

13ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Grand Coteau
Krotz Springs
Lawtell
Leonville
Melville
Morrow
Opelousas
Palmetto
Port Barre
Sunset
Washington

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

70512Leonville
70541Grand Coteau
70550Lawtell
70551Leonville
70570Opelousas
70577Port Barre
70584Sunset
70589Washington
70750Krotz Springs
71345
71353Melville
71356Morrow
71358Palmetto

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASReading PFAS survey resultsWhat a detection, a reporting level and a yearly average mean in EPA’s PFAS survey records.LeadChoosing a lead filter2 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near St. Landry Parish

All Louisiana counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.