Chatham, LA Tap Water Quality 2026

Water quality report for Chatham, LA — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Chatham's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Village Of Chatham Water System PWSID: LA1049004 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead is 1.00 ppb, 7% of the action level and no violations are open. PFAS has never been sampled at this system.

Chatham earns a B for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 1.00 ppb — 7% of the federal action level

PFAS never sampled at this system

56 violations since 2015, 45 health-based

No violations currently open

Chatham's lead level vs. all Louisiana community water systems

0 ppb5 ppb10 ppb15 ppb

Lead level: 1.00 ppb — 7% of the federal action level

✓ Lower lead than 88% of Louisiana utilities

Population Served

491

~519 connections

Water Source

Groundwater

Drawn from wells — SDWIS source code GW

Active Violations

56 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

7% of EPA action level

1.00 ppb

Action level: 15 ppb

The 90th-percentile lead result is 1.00 ppb, 7% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
Public Notice	OTHER	—	—	2026	Unaddressed
TTHM	MCL EXCEEDANCE	0.088 MG/L	0.080 mg/L	2026	Archived
TTHM	MCL EXCEEDANCE	0.088 MG/L	0.080 mg/L	2025	Archived
Groundwater Rule	TREATMENT TECHNIQUE	—	—	2024	Resolved
Groundwater Rule	TREATMENT TECHNIQUE	—	—	2024	Resolved
Groundwater Rule	TREATMENT TECHNIQUE	—	—	2024	Resolved
Groundwater Rule	TREATMENT TECHNIQUE	—	—	2024	Resolved
Groundwater Rule	TREATMENT TECHNIQUE	—	—	2024	Resolved
Groundwater Rule	TREATMENT TECHNIQUE	—	—	2024	Resolved
TTHM	MCL EXCEEDANCE	0.086 MG/L	0.080 mg/L	2021	Resolved
TTHM	MCL EXCEEDANCE	0.136 MG/L	0.080 mg/L	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.065 MG/L	0.060 mg/L	2021	Resolved
TTHM	MCL EXCEEDANCE	0.171 MG/L	0.080 mg/L	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.078 MG/L	0.060 mg/L	2021	Resolved
TTHM	MCL EXCEEDANCE	0.23 MG/L	0.080 mg/L	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.076 MG/L	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.209 MG/L	0.080 mg/L	2020	Resolved
Public Notice	OTHER	—	—	2020	Resolved
TTHM	MCL EXCEEDANCE	0.208 MG/L	0.080 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.24 MG/L	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.064 MG/L	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.24 MG/L	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.064 MG/L	0.060 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.256 MG/L	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.071 MG/L	0.060 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.256 MG/L	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.261 MG/L	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.074 MG/L	0.060 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.068 MG/L	0.060 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.249 MG/L	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	66 UG/L	0.060 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	260 UG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	222 UG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	203 UG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	190 UG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	161 UG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	189 UG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	170 UG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	117 UG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	105 UG/L	0.080 mg/L	2016	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2016	Resolved
TTHM	MCL EXCEEDANCE	118 UG/L	0.080 mg/L	2016	Resolved
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2016	Archived
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2016	Resolved
TTHM	MCL EXCEEDANCE	126 UG/L	0.080 mg/L	2016	Resolved
Coliform (TCR)	MONITORING AND REPORTING	—	5% of samples	2016	Archived
TTHM	MCL EXCEEDANCE	162 UG/L	0.080 mg/L	2016	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2016	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2015	Resolved
TTHM	MCL EXCEEDANCE	180 UG/L	0.080 mg/L	2015	Resolved
TTHM	MCL EXCEEDANCE	193 UG/L	0.080 mg/L	2015	Resolved
Public Notice	OTHER	—	—	2015	Resolved
TTHM	MCL EXCEEDANCE	149 UG/L	0.080 mg/L	2015	Resolved
Coliform (TCR)	MONITORING AND REPORTING	—	5% of samples	2015	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2015	Resolved
TTHM	MCL EXCEEDANCE	104 UG/L	0.080 mg/L	2015	Resolved

Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

56 violations are on record since 2015, of which 45 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Village Of Chatham Water System

PWSID LA1049004

Water source Groundwater — Drawn from wells — SDWIS source code GW

Population served 491

Service connections 519

Systems serving this area 1

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Chatham tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open. Lead is 1.00 ppb, 7% of the action level.

Does Chatham water have PFAS? ▼

This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.

Who supplies water to Chatham? ▼

Village Of Chatham Water System (PWSID LA1049004). Groundwater. Drawn from wells — SDWIS source code GW

When was this system last inspected? ▼

It was last inspected on 2025-06-25. No significant deficiencies were recorded.

What Should Chatham Residents Do?

Read your annual water report

Your supplier publishes a Consumer Confidence Report each July covering the prior year.

Check for a lead service line

Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.

Flush before drinking

If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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