Water Quality in CALVIN, LA (71410)

EPA violation data for public water systems serving ZIP code 71410.

133

Total Violations

119

Health-Based

Monitoring / Reporting

130

Resolved

What does this mean?

130 of 133 violations have been resolved. 119 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 14 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.

Water systems: 1 Population served: 591

Violations Detail (133 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Groundwater Rule	Health-Based	N/A	N/A	Sep 9, 2025	Active	N/A
Groundwater Rule	Health-Based	N/A	N/A	Sep 9, 2025	Active	N/A
TTHM	Health-Based	N/A	0.081	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.081	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.081	Dec 31, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.081	Dec 31, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.094	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.094	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.094	Jun 30, 2024	Resolved	N/A
TTHM	Health-Based	N/A	0.094	Jun 30, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 16, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 16, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.123	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.123	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.123	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.123	Sep 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.25	Jun 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.25	Jun 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.25	Jun 30, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.25	Jun 30, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jun 6, 2023	Active	N/A
TTHM	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Apr 30, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Apr 27, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Apr 27, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Apr 27, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Apr 27, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.072	Mar 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.072	Mar 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.072	Mar 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.326	Mar 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.326	Mar 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.326	Mar 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.326	Mar 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.072	Mar 31, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 31, 2023	Resolved	N/A
TTHM	Health-Based	N/A	0.433	Dec 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.433	Dec 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.433	Dec 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.433	Dec 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.09	Dec 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.09	Dec 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.09	Dec 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.09	Dec 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.438	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.094	Sep 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.438	Sep 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.438	Sep 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.438	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.094	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.094	Sep 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.094	Sep 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.457	Jun 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.457	Jun 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.457	Jun 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.094	Jun 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.094	Jun 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.094	Jun 30, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.094	Jun 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.457	Jun 30, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.386	Mar 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.386	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.082	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.082	Mar 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.386	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.082	Mar 31, 2022	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.082	Mar 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.386	Mar 31, 2022	Resolved	N/A
TTHM	Health-Based	N/A	0.352	Dec 31, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.352	Dec 31, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.352	Dec 31, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.352	Dec 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.082	Dec 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.082	Dec 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.082	Dec 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.082	Dec 31, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.072	Sep 30, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.317	Sep 30, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.317	Sep 30, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.317	Sep 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.072	Sep 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.072	Sep 30, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.317	Sep 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.072	Sep 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.064	Jun 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.064	Jun 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.064	Jun 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Health-Based	N/A	0.064	Jun 30, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.336	Jun 30, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.336	Jun 30, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.336	Jun 30, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.336	Jun 30, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 23, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.377	Mar 31, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.377	Mar 31, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.377	Mar 31, 2021	Resolved	N/A
TTHM	Health-Based	N/A	0.377	Mar 31, 2021	Resolved	N/A

Violation Timeline

2025(2)

Groundwater Rule

Sep 9Active

Groundwater Rule

Sep 9Active

2024(10)

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

TTHM

Jun 30Resolved

How Does This Compare?

CALVIN (71410) has 133 recorded violations, including 119 health-based. 3 remain unresolved. Consider testing your tap water independently for added peace of mind.

Recommended Water Filters

Based on the contaminants detected in your area, these filter types may help improve your water quality.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove.

Water Quality in CALVIN, LA (71410)

What does this mean?

Violations Detail (133 total)

Violation Timeline

2025(2)

2024(10)

2023(31)

2022(34)

2021(56)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Activated Carbon Filter

Nearby ZIP Codes

Check Another ZIP Code