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Public water system record

Lisbon Water System

Serves an area of Claiborne Parish, LA · 891 people served

Federal records show 4 health-based violations and 2 monitoring/reporting issues for Lisbon Water System in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.

  • LA1027005
  • LISBON
  • LA
  • 891 served

System profile

Source water Groundwater
ZIP 71048
EPA system ID LA1027005

Verify this system on EPA ECHO →

Health-based violations, last 10 years
4
Resolved
0
Unresolved
0
Archived by EPA
4
Any acute record
No
Monitoring issues, last 10 years
2

Key facts

  • Lisbon Water System draws water from 3 wells.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit), 2025.
  • Record on file since 1999, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 169 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 69 µg/L, federal limit 60 µg/L (1.2 times the limit)
 220 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 93 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Haloacetic Acids (HAA5)
Monitoring and reporting
 Aug 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Aug 1, 2016 Resolved

Full record since 1999

EPA's records for Lisbon Water System go back to 1999. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 5 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 1
2010 to October 18, 2016 1 4
2020s 4 0

Most recent health-based violation before October 19, 2016: Groundwater Rule, began December 2011, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Groundwater Rule
Treatment technique failure
 Dec 28, 2011 Resolved

What the violations mean

Total Trihalomethanes (TTHMs)

2 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Haloacetic Acids (HAA5)

2 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Where the water comes from

Lisbon Water System draws water from 3 wells.

Annual water quality report

Lisbon Water System must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Louisiana.

Certified drinking water labs by state EPA guidance for private wells