Community Water System · PWS PR0653026
Com. Rancho Grande
Operator location Naguabo, Puerto Rico - 30% of 666 violations are health-based (upper-third health share (> 23%)); surface water source; 1,428 served per SDWIS.
- 1,428
- People served (this PWS)
- 666
- EPA violations (this PWS)
- 203
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Com. Rancho Grande standing, high SDWIS violation third
30% of 666 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 30% is upper-third health share (> 23%). Population rank #16,394 of 29,740 among systems serving 500+.
The verdict
Com. Rancho Grande sits in the upper third of the sitemap cohort by violation count (666), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,428 (mid served population (≤ 3,309)). Health-based share is 30% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #16,394 of 29,740
- Population · /systems
- #144 of 235
- Population · PR
- 666
- Total EPA violations on record
- 30%
- 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
- Private
- Connections
- 535
- County
- Naguabo Municipio
- School/Daycare
- No
- MCL Violations
- 183
- Monitoring Violations
- 388
- Treatment Tech Violations
- 20
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 236 | 2015 |
| Coliform (TCR) | MCL | 183 | 2015 |
| Surface Water Treatment Rule | MR | 149 | 2005 |
| Surface Water Treatment Rule | TT | 18 | 2008 |
| Revised Total Coliform Rule | MON | 3 | 2019 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
Violation Count vs. the National Corpus
Com. Rancho Grande has 666 recorded EPA violations, 97% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 3% carry more. 30% of this system's own violations are health-based (203 of 666), and it ranks #16,394 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)
666 Higher than most more violations than 97% 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 Com. Rancho Grande
203 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for PR0653026.
Sources: EPA SDWIS
Nationwide peers
666 violations · 1,428 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Com. Rancho Grande
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.