Community Water System · PWS PR0003553
Duey
Operator location Yauco, Puerto Rico - 41% of 182 violations are health-based (upper-third health share (> 23%)); groundwater source; 5,708 served per SDWIS.
- 5,708
- People served (this PWS)
- 182
- EPA violations (this PWS)
- 74
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Duey standing, high SDWIS violation third
41% of 182 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 41% is upper-third health share (> 23%). Population rank #7,059 of 29,740 among systems serving 500+.
The verdict
Duey sits in the upper third of the sitemap cohort by violation count (182), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (5,708; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 41% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #7,059 of 29,740
- Population · /systems
- #74 of 235
- Population · PR
- 182
- Total EPA violations on record
- 41%
- 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
- 2,929
- County
- San German Municipio
- School/Daycare
- No
- MCL Violations
- 74
- Monitoring Violations
- 98
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 74 | 2015 |
| Lead and Copper Rule | MR | 18 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2019 |
| TTHM | MR | 4 | 2019 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2009 |
| cis-1,2-Dichloroethylene | MR | 3 | 2009 |
| Xylenes, Total | MR | 3 | 2009 |
| DICHLOROMETHANE | MR | 3 | 2009 |
| p-Dichlorobenzene | MR | 3 | 2009 |
| Vinyl chloride | MR | 3 | 2009 |
| trans-1,2-Dichloroethylene | MR | 3 | 2009 |
| 1,2-Dichloroethane | MR | 3 | 2009 |
| 1,1,1-Trichloroethane | MR | 3 | 2009 |
| 1,1,2-Trichloroethane | MR | 3 | 2009 |
| CHLOROBENZENE | MR | 3 | 2009 |
| Benzene | MR | 3 | 2009 |
| Carbon tetrachloride | MR | 3 | 2009 |
| 1,2-Dichloropropane | MR | 3 | 2009 |
| Trichloroethylene | MR | 3 | 2009 |
| Toluene | MR | 3 | 2009 |
| Ethylbenzene | MR | 3 | 2009 |
| Styrene | MR | 3 | 2009 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 2010 |
| Consumer Confidence Rule | Other | 3 | 2018 |
| Combined Radium (-226 and -228) | MR | 3 | 2010 |
| 1,1-Dichloroethylene | MR | 3 | 2009 |
| Tetrachloroethylene | MR | 3 | 2009 |
| o-Dichlorobenzene | MR | 3 | 2009 |
| Radium-226 | MR | 2 | 2010 |
| Coliform (Pre-TCR) | Other | 1 | 1991 |
Violation Count vs. the National Corpus
Duey has 182 recorded EPA violations, 84% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 16% carry more. 41% of this system's own violations are health-based (74 of 182), and it ranks #7,059 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)
182 Higher than most more violations than 84% 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 Duey
74 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for PR0003553.
Sources: EPA SDWIS
Nationwide peers
182 violations · 5,708 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 similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Duey
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Puerto Rico compares on the same EPA violation measures. Puerto Rico 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.