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Calvin, LA Tap Water Quality 2026

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

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

Main Utility: Village Of Calvin Water System PWSID: LA1127002 Updated: 2026 Q2
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1 violation currently open

Lead is 2.00 ppb, 13% of the action level. PFAS has never been sampled at this system.

D

Calvin earns a D for water quality

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

Lead: 2.00 ppb — 13% of the federal action level
PFAS never sampled at this system
141 violations since 2015, 65 health-based
1 violation currently open
Calvin's lead level vs. all Louisiana community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 2.00 ppb — 13% of the federal action level
✓ Lower lead than 56% of Louisiana utilities
Population Served
182
~220 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 141 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
13% of EPA action level
2.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 2.00 ppb, 13% 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)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2025 Archived
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 mg/L 2024 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
TTHM MCL EXCEEDANCE 0.123 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.25 MG/L 0.080 mg/L 2023 Archived
Public Notice OTHER — — 2023 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Resolved
TTHM MCL EXCEEDANCE 0.326 MG/L 0.080 mg/L 2023 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.072 MG/L 0.060 mg/L 2023 Archived
Public Notice OTHER — — 2023 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.09 MG/L 0.060 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.433 MG/L 0.080 mg/L 2023 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.094 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.438 MG/L 0.080 mg/L 2022 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.094 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.457 MG/L 0.080 mg/L 2022 Archived
Consumer Confidence Rule OTHER — — 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.082 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.386 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.352 MG/L 0.080 mg/L 2022 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.082 MG/L 0.060 mg/L 2022 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.072 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.317 MG/L 0.080 mg/L 2021 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.064 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.336 MG/L 0.080 mg/L 2021 Archived
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Resolved
TTHM MCL EXCEEDANCE 0.377 MG/L 0.080 mg/L 2021 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2021 Resolved
TTHM MCL EXCEEDANCE 0.398 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.368 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.304 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.334 MG/L 0.080 mg/L 2020 Archived
Public Notice OTHER — — 2020 Resolved
TTHM MCL EXCEEDANCE 0.327 MG/L 0.080 mg/L 2020 Archived
Public Notice OTHER — — 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.069 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.341 MG/L 0.080 mg/L 2019 Archived
Public Notice OTHER — — 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.076 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.355 MG/L 0.080 mg/L 2019 Archived
Consumer Confidence Rule OTHER — — 2019 Resolved
Public Notice OTHER — — 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.073 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.362 MG/L 0.080 mg/L 2019 Archived
Public Notice OTHER — — 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.079 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.371 MG/L 0.080 mg/L 2019 Archived
Public Notice OTHER — — 2018 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.077 MG/L 0.060 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.328 MG/L 0.080 mg/L 2018 Archived
Public Notice OTHER — — 2018 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 77 UG/L 0.060 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 370 UG/L 0.080 mg/L 2018 Archived
Consumer Confidence Rule OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 78 UG/L 0.060 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 371 UG/L 0.080 mg/L 2018 Archived
Public Notice OTHER — — 2018 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 66 UG/L 0.060 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 300 UG/L 0.080 mg/L 2018 Archived
Public Notice OTHER — — 2017 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
TTHM MCL EXCEEDANCE 336 UG/L 0.080 mg/L 2017 Archived
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
TTHM MCL EXCEEDANCE 343 UG/L 0.080 mg/L 2017 Archived
Consumer Confidence Rule OTHER — — 2017 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
TTHM MCL EXCEEDANCE 352 UG/L 0.080 mg/L 2017 Archived
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 440 UG/L 0.080 mg/L 2017 Archived
Public Notice OTHER — — 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 Resolved
TTHM MCL EXCEEDANCE 454 UG/L 0.080 mg/L 2016 Archived
Public Notice OTHER — — 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2016 Resolved
Revised Total Coliform Rule TREATMENT TECHNIQUE — — 2016 Resolved
TTHM MCL EXCEEDANCE 450 UG/L 0.080 mg/L 2016 Archived
Consumer Confidence Rule OTHER — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 449 UG/L 0.080 mg/L 2016 Archived
Public Notice OTHER — — 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2016 Archived
TTHM MCL EXCEEDANCE 444 UG/L 0.080 mg/L 2016 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Archived
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
TTHM MCL EXCEEDANCE 410 UG/L 0.080 mg/L 2015 Archived
Public Notice OTHER — — 2015 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
TTHM MCL EXCEEDANCE 422 UG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 75 UG/L 0.060 mg/L 2015 Archived
Public Notice OTHER — — 2015 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Archived
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
Public Notice OTHER — — 2015 Resolved
TTHM MCL EXCEEDANCE 447 UG/L 0.080 mg/L 2015 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2015 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 75 UG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 458 UG/L 0.080 mg/L 2015 Archived
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

1 violation remains open, out of 141 recorded since 2015 (65 health-based).

About the Main Water System

Utility Village Of Calvin Water System
PWSID LA1127002
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 182
Service connections 220
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Calvin tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 2.00 ppb, 13% of the action level.
Does Calvin 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 Calvin? ▼
Village Of Calvin Water System (PWSID LA1127002). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-05-08. Inspectors recorded 1 significant deficiency.

What Should Calvin Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
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.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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