Is Gualo Rai, Northern Mariana Islands tap water safe?
1 water system report serving Gualo Rai. Your water depends on which one serves your address. Check your bill if unsure.
C
Diamond Water Gualo Rai
Serves 55 people · Groundwater · Full report →
3 health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).