Community Water System · PWS AL0000929
Twin Water Authority
Operator location Guin, Alabama - smaller served population (≤ 999) at 804 people served; 113 SDWIS violations on record from surface water sources.
- 804
- People served (this PWS)
- 113
- EPA violations (this PWS)
- 2
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Twin Water Authority standing, high SDWIS violation third
804 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 2% is middle-third health share (≤ 23%). Population rank #22,335 of 29,740 among systems serving 500+.
The verdict
Twin Water Authority sits in the upper third of the sitemap cohort by violation count (113), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (804; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 2% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #22,335 of 29,740
- Population · /systems
- #459 of 487
- Population · AL
- 113
- Total EPA violations on record
- 2%
- 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
- 268
- County
- Marion
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 101
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 42 | 2024 |
| TTHM | MR | 42 | 2024 |
| Endrin | MR | 8 | 2000 |
| Coliform (TCR) | MR | 6 | 1998 |
| Coliform (TCR) | MCL | 2 | 1990 |
| Revised Total Coliform Rule | RPT | 2 | 2024 |
| Diquat | MR | 2 | 2020 |
| Endrin | Other | 2 | 1998 |
| Lead and Copper Rule | MR | 1 | 2025 |
Violation Count vs. the National Corpus
Twin Water Authority has 113 recorded EPA violations, 76% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 24% carry more. 2% of this system's own violations are health-based (2 of 113), and it ranks #22,335 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)
113 Higher than most more violations than 76% 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 Twin Water Authority
EPA SDWIS lists 804 people served and 268 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
113 violations · 804 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 Twin Water Authority
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Alabama compares on the same EPA violation measures. Alabama 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.