Guam tap water, by utility.
5 utilities with a full report, serving 186,886 people as they report it. Regulated PFAS turned up at 3 of them.
| Utility | Based in | Serves | Regulated PFAS | Health-based violations since 2016 |
|---|---|---|---|---|
| Gwa Northern Water System | Talofofo | 139,207 | PFOA, PFOS, PFHxS, PFBS | 0 |
| Gwa Central Water System | Apra Heights | 21,398 | None found | 1 |
| U.S. Navy Water System | Guam Naval Magazine | 12,780 | PFHxS | 2 |
| Andersen Air Force Base Water System | Apo Ap | 7,700 | PFHxS | 0 |
| Gwa Southern Water System | Talofofo | 5,801 | None found | 1 |
| Utilities EPA sampled under UCMR 5, plus any other community system serving 3,300 people or more. Smaller systems appear in ZIP code results. Data: EPA SDWIS 2026 Q2 and UCMR 5. | ||||