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Public water system record

Grayson Water System

Serves Grayson, Caldwell Parish, LA · 1,461 people served

Federal records show 14 health-based violations and 7 monitoring/reporting issues for Grayson Water System in the last ten years, including an unresolved Groundwater Rule violation.

  • LA1021005
  • GRAYSON
  • LA
  • 1,461 served

System profile

Source water Groundwater
ZIP 71435
EPA system ID LA1021005

Verify this system on EPA ECHO →

Health-based violations, last 10 years
14
Resolved
3
Unresolved
9
Archived by EPA
2
Any acute record
No
Monitoring issues, last 10 years
7

Key facts

  • Grayson Water System draws water from 3 wells.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2025.
  • Record on file since 1994, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 589 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 0.085 mg/L, federal limit 0.08 mg/L (1.1 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 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Jan 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
 350 Oct 17, 2024 Resolved No
Groundwater Rule
Treatment technique failure
 140 Dec 11, 2023 Active No
Groundwater Rule
Treatment technique failure
 140 Dec 11, 2023 Active No
Groundwater Rule
Treatment technique failure
 140 Dec 7, 2021 Active No
Groundwater Rule
Treatment technique failure
 140 Dec 7, 2021 Active No
Groundwater Rule
Treatment technique failure
 140 Dec 7, 2021 Active No
Groundwater Rule
Treatment technique failure
 140 Dec 7, 2021 Active No
Groundwater Rule
Treatment technique failure
 140 Dec 7, 2021 Active No
Groundwater Rule
Treatment technique failure
 140 Dec 7, 2021 Active No
Groundwater Rule
Treatment technique failure
 140 Dec 7, 2021 Active No
Groundwater Rule
Treatment technique failure
 140 Jun 1, 2019 Resolved No
Groundwater Rule
Treatment technique failure
 140 Jun 1, 2019 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2024 Resolved
Public Notice
OTHER
 Jan 24, 2024 Active
Public Notice
OTHER
 Jan 13, 2022 Active
Lead and Copper Rule
Monitoring and reporting
 Jan 25, 2020 Resolved
Public Notice
OTHER
 Jul 27, 2019 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2018 Resolved

Full record since 1994

EPA's records for Grayson Water System go back to 1994. Before October 19, 2016 they list 1 health-based violation (1 archived by EPA without a recorded fix) and 6 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 1
2000s 1 2
2010 to October 18, 2016 0 3
October 19, 2016 to 2019 2 2
2020s 12 5

Most recent health-based violation before October 19, 2016: Total Coliform, began October 2002, Archived.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Oct 1, 2002 Archived

What the violations mean

Groundwater Rule

11 incidents

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about each of these violations.

Total Trihalomethanes (TTHMs)

2 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

LEAD AND COPPER RULE REVISIONS

1 incident

The system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Grayson Water System draws water from 3 wells. It also has an emergency connection to Columbia Heights Water District. 4 other public water systems have emergency connections to Grayson Water System.

Emergency or part-time connections to

Annual water quality report

Grayson 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