Community Water System · PWS AR0000135
Subiaco City Waterworks
Operator location Subiaco, Arkansas - 63% of 60 violations are health-based (upper-third health share (> 23%)); surface water source; 533 served per SDWIS.
- 533
- People served (this PWS)
- 60
- EPA violations (this PWS)
- 38
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Subiaco City Waterworks standing, mid SDWIS violation third
63% of 60 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 63% is upper-third health share (> 23%). Population rank #27,859 of 29,740 among systems serving 500+.
The verdict
Subiaco City Waterworks lands in the middle third by violation volume (60), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (533; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 63% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #27,859 of 29,740
- Population · /systems
- #497 of 514
- Population · AR
- 60
- Total EPA violations on record
- 63%
- 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
- 220
- County
- Logan
- School/Daycare
- No
- MCL Violations
- 38
- Monitoring Violations
- 8
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 29 | 2020 |
| Total Haloacetic Acids (HAA5) | MCL | 9 | 2020 |
| Coliform (TCR) | MR | 7 | 2003 |
| Coliform (TCR) | Other | 1 | 1991 |
| Surface Water Treatment Rule | MR | 1 | 2001 |
Violation Count vs. the National Corpus
Subiaco City Waterworks has 60 recorded EPA violations, 61% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 38% carry more. 63% of this system's own violations are health-based (38 of 60), and it ranks #27,859 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)
60 Around the middle fewer violations than 38% 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 Subiaco City Waterworks
38 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for AR0000135.
Sources: EPA SDWIS
Nationwide peers
60 violations · 533 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
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 Subiaco City Waterworks
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Arkansas compares on the same EPA violation measures. Arkansas 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.