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F0/100

TOWN OF ZWOLLE WATER SYSTEM — Water Quality Report 2026

Serving 2,520 people · Louisiana

Water Source
Groundwater
County
—
System ID
LA1085032
Violations
44

Contaminant Test Results

EPA Violation History

25

Violations (last 5yr)

10

Unresolved

17

Health-Related

TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: February 12, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Monitoring / Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: November 13, 2024 – October 12, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2024 – December 31, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2024 – June 30, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2024 – March 31, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2023 – December 31, 2023Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 3Resolved

Failed to issue ongoing public notification

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2022 – September 21, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: May 22, 2022 – September 28, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: May 4, 2022 – September 14, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Maximum contaminant level violation

When: April 15, 2022 – November 7, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: February 16, 2022 – July 29, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2021 – December 31, 2021Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: August 11, 2021 – November 1, 2021Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Violation related to Consumer Confidence Report

When: July 2, 2021 – January 31, 2024Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Violation related to Consumer Confidence Report

When: July 2, 2021 – October 21, 2021Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Violation related to Consumer Confidence Report

When: July 2, 2021Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Violation related to Consumer Confidence Report

When: July 2, 2021 – October 21, 2021Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Violation related to Consumer Confidence Report

When: July 2, 2021 – October 21, 2021Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Violation related to Consumer Confidence Report

When: July 2, 2021 – October 21, 2021Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Violation related to Consumer Confidence Report

When: July 2, 2021Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2021 – September 30, 2021Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: May 5, 2021 – August 24, 2021Rule: Ground Water RuleEnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About TOWN OF ZWOLLE WATER SYSTEM

Is TOWN OF ZWOLLE WATER SYSTEM water safe to drink?

TOWN OF ZWOLLE WATER SYSTEM water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 44 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has TOWN OF ZWOLLE WATER SYSTEM detected?

1 contaminants were tested in TOWN OF ZWOLLE WATER SYSTEM's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does TOWN OF ZWOLLE WATER SYSTEM have any EPA violations?

Yes, TOWN OF ZWOLLE WATER SYSTEM has 44 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MCL. 31 are health-based violations.

How many people does TOWN OF ZWOLLE WATER SYSTEM serve?

TOWN OF ZWOLLE WATER SYSTEM serves approximately 2,520 people, Louisiana.

What type of water does TOWN OF ZWOLLE WATER SYSTEM provide?

TOWN OF ZWOLLE WATER SYSTEM sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is LA1085032.

How does TOWN OF ZWOLLE WATER SYSTEM compare to other utilities in Louisiana?

TOWN OF ZWOLLE WATER SYSTEM scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Louisiana state page for a full comparison of water systems.