Community Water System · PWS PR0439034
Guaraguao
Operator location Ponce, Puerto Rico - 34% of 1,201 violations are health-based (upper-third health share (> 23%)); surface water source; 240 served per SDWIS.
- 240
- People served (this PWS)
- 1,201
- EPA violations (this PWS)
- 403
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Guaraguao standing, high SDWIS violation third
34% of 1,201 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 34% is upper-third health share (> 23%).
The verdict
Guaraguao sits in the upper third of the sitemap cohort by violation count (1,201), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (240; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 34% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 1,201
- Total EPA violations on record
- 34%
- Health-based (MCL / treatment failure)
- 240
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 80
- County
- Juana Diaz Municipio
- School/Daycare
- No
- MCL Violations
- 389
- Monitoring Violations
- 735
- Treatment Tech Violations
- 14
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 554 | 2016 |
| Coliform (TCR) | MCL | 389 | 2002 |
| Surface Water Treatment Rule | MR | 128 | 2005 |
| Revised Total Coliform Rule | MON | 52 | 2025 |
| Surface Water Treatment Rule | TT | 12 | 2007 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| Lead and Copper Rule | MR | 1 | 2023 |
Violation Count vs. the National Corpus
Guaraguao has 1,201 recorded EPA violations, 99% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 1% carry more. 34% of this system's own violations are health-based (403 of 1,201), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
1,201 Higher than most more violations than 99% 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 Guaraguao
403 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for PR0439034.
Sources: EPA SDWIS
Nationwide peers
1,201 violations · 240 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.
What to do with Guaraguao
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.