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Community Water System · PWS LA1069002

Clarence Water System

Clarence, Louisiana 71414 - drinking water served from surface water sources to 642 people, tracked in EPA SDWIS and UCMR5.

642
People served
236
EPA violations
91
Health-based
Untested
UCMR5 result

The verdict

EPA records 236 drinking-water violations at Clarence Water System, 39% of them health-based - above the Louisiana per-system average.

236
Total EPA violations on record
39%
Health-based (MCL / treatment failure)
642
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Clarence Water System

Clarence Water System is a local-owned community water system that delivers drinking water to 642 residents in Clarence, Louisiana (Natchitoches Parish County) through 214 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 236 total violations for this system , of which 91 (39%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 90 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Total Haloacetic Acids (HAA5), recorded in 38 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Louisiana, EPA tracks 1,234 public water systems serving 5,316,532 people, with 115,060 cumulative violations and 62,164 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 93.2 violations. Statewide, 218 of 265 UCMR5-tested systems have reported PFAS detections (82.3%).

Clarence Water System's 236 violations sit above the Louisiana average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
642
Total Violations
236
Health-Based Violations
91
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
214
County
Natchitoches Parish
School/Daycare
No
MCL Violations
60
Monitoring Violations
90
Treatment Tech Violations
31

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Total Haloacetic Acids (HAA5) MR 38 2014
TTHM MR 36 2010
Coliform (TCR) MCL 32 2014
Surface Water Treatment Rule TT 30 2025
Total Haloacetic Acids (HAA5) MCL 23 2021
Consumer Confidence Rule Other 18 2021
Lead and Copper Rule MR 8 2021
TTHM MCL 5 2015
Public Notice Other 5 2022
Chloramine MR 5 2016
Revised Total Coliform Rule MON 3 2016
LEAD AND COPPER RULE REVISIONS RPT 1 2025
LEAD AND COPPER RULE REVISIONS TT 1 2024

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Clarence Water System.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID LA1069002 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Louisiana Drinking Water Authority

Louisiana's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find LA regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Surface Water Treatment Rule TT 30 SDWIS / LA1069002 / 0200
2025 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / LA1069002 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / LA1069002 / 5200
2022 Public Notice Other 5 SDWIS / LA1069002 / 7500
2021 Total Haloacetic Acids (HAA5) MCL 23 SDWIS / LA1069002 / 2456
2021 Consumer Confidence Rule Other 18 SDWIS / LA1069002 / 7000
2021 Lead and Copper Rule MR 8 SDWIS / LA1069002 / 5000
2016 Chloramine MR 5 SDWIS / LA1069002 / 1006
2016 Revised Total Coliform Rule MON 3 SDWIS / LA1069002 / 8000
2015 TTHM MCL 5 SDWIS / LA1069002 / 2950
2014 Total Haloacetic Acids (HAA5) MR 38 SDWIS / LA1069002 / 2456
2014 Coliform (TCR) MCL 32 SDWIS / LA1069002 / 3100
2010 TTHM MR 36 SDWIS / LA1069002 / 2950

How Clarence Water System Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Clarence Water System Louisiana avg Federal benchmark
Total violations 236 93.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 91 50.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 82.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 642 4,308 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,234 regulated public water systems in Louisiana.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Clarence Water System water safe to drink? ▼
Clarence Water System (PWS ID: LA1069002) has 236 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 642 people using Surface Water sources.
How many people does Clarence Water System serve? ▼
Clarence Water System serves 642 people in Clarence, Louisiana. It is a Local-owned system using Surface Water water sources with 214 service connections.
What type of violations does Clarence Water System have? ▼
Clarence Water System has 236 total violations: 91 health-based violations (MCL exceedances or treatment failures), 90 monitoring/reporting violations, and 31 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Clarence Water System water? ▼
No PFAS testing data is available for Clarence Water System under the EPA's UCMR5 monitoring program.
What water source does Clarence Water System use? ▼
Clarence Water System uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.