State rankings
Northern Mariana Islands water-system rankings
Lowest-scoring systems in Northern Mariana Islands
Ranked lowest score first. Population shown for context.
1 Commonwealth Utilities Corp (Saipan) Saipan, MP · ~48,524 served 62 2 Saipan Ice And Water Saipan, MP · ~3,101 served 100 3 Commonwealth Utilities Corp (Tinian) Saipan, MP · ~3,005 served 100 4 Commonwealth Utilities Corp (Rota) Saipan, MP · ~2,504 served 100 5 Star Water SAIPAN, MP · ~1,522 served 100 6 Kensington Hotel SAIPAM, MP · ~634 served 100 7 Pacific Islands Club Saipan, MP · ~554 served 100 8 Finasisu Terrace Apartment Saipan, MP · ~393 served 100 9 The Water Company SAIPAN, MP · ~310 served 100 10 Marianas Ice And Water SAIPAN, MP · ~300 served 100 11 Tinian Ice And Water TINIAN, MP · ~300 served 100 12 Kensington Dormitory Saipan, MP · ~260 served 100 13 Rota Crystal ROTA, MP · ~226 served 100 14 3K Ice And Water Company TINIAN, MP · ~208 served 100 15 Lao Lao Bay Golf Resort Saipan, MP · ~200 served 100 16 Anaks Condominium SAIPAN, MP · ~191 served 100 17 JG Sablan Ice And Water SAIPAN, MP · ~173 served 100 18 Aqua Water SAIPAN, MP · ~170 served 100 19 Diamond Ice And Water SAIPAN, MP · ~155 served 100 20 Black Micro Corporation Tinian SAIPAN, MP · ~150 served 100 21 San Jose Mart Water SAIPAN, MP · ~130 served 100 22 Winners Residence Saipan, MP · ~124 served 100 23 Popz Purified Drinking Water Saipan, MP · ~100 served 100 24 Saipan Vegas Saipan, MP · ~100 served 100 25 Xu Sunshine Corp Saipan, MP · ~79 served 100
Highest-scoring large systems in Northern Mariana Islands
Systems serving 10,000+ people with the best scores.
Scores reflect EPA public records (violations, enforcement, PFAS), are system-level, and can’t account for your home’s plumbing. See the methodology.