Non-Transient Non-Community Water System · PWS MP0000026
Grandvrio Resort
Operator location Saipan, Northern Mariana Islands - smaller served population (≤ 999) at 409 people served; 62 SDWIS violations on record from groundwater sources.
- 409
- People served (this PWS)
- 62
- EPA violations (this PWS)
- 2
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Grandvrio Resort standing, mid SDWIS violation third
409 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%).
The verdict
Grandvrio Resort lands in the middle third by violation volume (62), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (409; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 3% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 62
- Total EPA violations on record
- 3%
- Health-based (MCL / treatment failure)
- 409
- 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
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 59
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 6 | 2002 |
| Coliform (TCR) | MCL | 2 | 2007 |
| Nitrate | MR | 1 | 2001 |
| Toxaphene | MR | 1 | 2001 |
| Dalapon | MR | 1 | 2001 |
| Diquat | MR | 1 | 2001 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2001 |
| OXAMYL | MR | 1 | 2001 |
| Simazine | MR | 1 | 2001 |
| Hexachlorocyclopentadiene | MR | 1 | 2001 |
| Carbofuran | MR | 1 | 2001 |
| Atrazine | MR | 1 | 2001 |
| LASSO | MR | 1 | 2001 |
| 2,3,7,8-TCDD | MR | 1 | 2001 |
| 2,4,5-TP | MR | 1 | 2001 |
| HEXACHLOROBENZENE | MR | 1 | 2001 |
| Benzo(a)pyrene | MR | 1 | 2001 |
| Pentachlorophenol | MR | 1 | 2001 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 2001 |
| ETHYLENE DIBROMIDE | MR | 1 | 2001 |
| o-Dichlorobenzene | MR | 1 | 2001 |
| Vinyl chloride | MR | 1 | 2001 |
| trans-1,2-Dichloroethylene | MR | 1 | 2001 |
| 1,2-Dichloroethane | MR | 1 | 2001 |
| 1,1,1-Trichloroethane | MR | 1 | 2001 |
| Carbon tetrachloride | MR | 1 | 2001 |
| 1,2-Dichloropropane | MR | 1 | 2001 |
| 1,1,2-Trichloroethane | MR | 1 | 2001 |
| Toluene | MR | 1 | 2001 |
| Ethylbenzene | MR | 1 | 2001 |
Violation Count vs. the National Corpus
Grandvrio Resort has 62 recorded EPA violations, 62% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 37% carry more. 3% of this system's own violations are health-based (2 of 62), 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)
62 Around the middle fewer violations than 37% 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 Grandvrio Resort
EPA SDWIS lists 409 people served and 1 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
62 violations · 409 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.
What to do with Grandvrio Resort
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Northern Mariana Islands compares on the same EPA violation measures. Northern Mariana Islands 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.