Community Water System · PWS LA1067005
Collinston Water System
Operator location Collinston, Louisiana - smaller served population (≤ 999) at 609 people served; 167 SDWIS violations on record from groundwater sources.
- 609
- People served (this PWS)
- 167
- EPA violations (this PWS)
- 32
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Collinston Water System standing, high SDWIS violation third
609 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 19% is middle-third health share (≤ 23%). Population rank #25,978 of 29,740 among systems serving 500+.
The verdict
Collinston Water System sits in the upper third of the sitemap cohort by violation count (167), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (609; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 19% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #25,978 of 29,740
- Population · /systems
- #644 of 707
- Population · LA
- 167
- Total EPA violations on record
- 19%
- 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
- 203
- County
- Morehouse Parish
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 69
- Treatment Tech Violations
- 32
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 52 | 2025 |
| Public Notice | Other | 34 | 2024 |
| Lead and Copper Rule | TT | 18 | 2022 |
| Groundwater Rule | TT | 13 | 2024 |
| Consumer Confidence Rule | Other | 9 | 2024 |
| Chlorine | MR | 9 | 2015 |
| Coliform (TCR) | MR | 8 | 2015 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
Violation Count vs. the National Corpus
Collinston Water System has 167 recorded EPA violations, 83% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 17% carry more. 19% of this system's own violations are health-based (32 of 167), and it ranks #25,978 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)
167 Higher than most more violations than 83% 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
Population served record for Collinston Water System
EPA SDWIS lists 609 people served and 203 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
167 violations · 609 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 Collinston 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.