Community Water System · PWS LA1069002
Clarence Water System
Operator location Clarence, Louisiana - 39% of 236 violations are health-based (upper-third health share (> 23%)); surface water source; 642 served per SDWIS.
- 642
- People served (this PWS)
- 236
- EPA violations (this PWS)
- 91
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Clarence Water System standing, high SDWIS violation third
39% of 236 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 39% is upper-third health share (> 23%). Population rank #25,454 of 29,740 among systems serving 500+.
The verdict
Clarence Water System sits in the upper third of the sitemap cohort by violation count (236), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (642; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 39% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #25,454 of 29,740
- Population · /systems
- #635 of 707
- Population · LA
- 236
- Total EPA violations on record
- 39%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
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 |
Violation Count vs. the National Corpus
Clarence Water System has 236 recorded EPA violations, 87% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 12% carry more. 39% of this system's own violations are health-based (91 of 236), and it ranks #25,454 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
236 Higher than most more violations than 87% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Health-based violations on Clarence Water System
91 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for LA1069002.
Sources: EPA SDWIS
Nationwide peers
236 violations · 642 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Clarence Water System
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Louisiana compares on the same EPA violation measures. Louisiana systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.