Public water system · LA1047008

Active

Gillis Long Center

At a glance

Gillis Long Center (PWSID LA1047008) is an active community water system in Iberville Parish County, Louisiana. It reports serving 600 people through 150 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by the federal government. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in August 2024.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

600

Service connections

150

Primary source

GWP

Purchased groundwater

System type

CWS

Community water system

System record

PWSIDLA1047008

System typeCommunity water system

Activity statusActive

Population served600

Service connections150

Primary water sourcePurchased groundwater

Owner typeFederal government

Primacy agencyLA state drinking water program

City served—

StateLouisiana

ZIP—

CountyIberville Parish County

How does Gillis Long Center compare with other water systems in Iberville Parish County?

By EPA's size categories, Gillis Long Center is a small system (501 to 3,300 people). Iberville Parish County has 13 active public water systems. Its population served is well below the county average of 3,456 people per system, and accounts for 1.3% of the 44,927 people reported by systems filed under the county. Across Louisiana, the 1,121 active systems average 4,685 people each. Nationally, the average active community water system reports serving 6,703 people, so Gillis Long Center is well below that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Louisiana has 815 active community water systems, 73% of the state's 1,121 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 69 Louisiana systems (6.2%) list purchased groundwater as their primary source.

Who owns and regulates Gillis Long Center?

EPA lists Gillis Long Center as owned by the federal government. The LA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 1 of the 13 active systems in Iberville Parish County (7.7%) are also owned by the federal government.

Does Gillis Long Center have drinking water violations?

EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in August 2024. The violations listed here began between July 1998 and August 2024. By type: 6 monitoring and reporting, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 5 as resolved and 3 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.

Began	Violation	Contaminant or rule	Health-based	Status
2024-08-03	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2023-11-21	Required treatment not metPublic Education · code 65	Lead and Copper Rulecode 5000	Yes	Resolved
2023-11-21	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2013-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2013-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2003-02-01	Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26	Total coliform bacteria (TCR)code 3100	No	Archived
2000-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Archived
1998-07-15	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Archived

All 8 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Gillis Long Center: frequently asked questions

Who runs Gillis Long Center?

Gillis Long Center (PWSID LA1047008) is a community water system owned by the federal government. It is regulated by the LA state drinking water program.

How many people does Gillis Long Center serve?

Gillis Long Center reports serving 600 people through 150 service connections in Iberville Parish County, Louisiana.

Where does Gillis Long Center get its water?

EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.

Does Gillis Long Center have any drinking water violations?

EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in August 2024. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Gillis Long Center's water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in August 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the LA state drinking water program.

Where can I find Gillis Long Center's water quality report?

As a community water system, Gillis Long Center must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Iberville Parish County

Water system	County	Population served	Type	Source
City of Plaquemine Water System	Iberville Parish	14,043	Community	Groundwater
East Iberville Water System	Iberville Parish	6,657	Community	Purchased groundwater
Intracoastal Water System West	Iberville Parish	6,489	Community	Surface water
Dow USA, La Division	Iberville Parish	3,960	Non-transient non-community	Surface water
Town of Maringouin	Iberville Parish	3,300	Community	Groundwater
Intracoastal Water System East	Iberville Parish	2,940	Community	Groundwater

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About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Gillis Long Center, PWSID LA1047008, Louisiana”, https://aquacensus.com/water-systems/louisiana/gillis-long-center-la1047008 (data as of October 1, 2026).