County drinking water records

St. John Island, VI drinking water systems

1 community water system is placed in St. John Island, VI by the county its records name. EPA has no service area map for it, so the area it serves is not mapped, and it is not counted in figures for St. John Island, VI.

Systems placed by county record in St. John Island

1 system

EPA has no service area map for this system. It is placed by the county its records name (the counties EPA lists it serving, or the county coded in its ID where EPA lists none), and without a map it is not counted in the figures above.

System	Serves	People served	Main source	Health-based violations, 10 years	Unresolved	Lead lines
Calabash Boom Apartments (St. John)	County on record	25	Groundwater	1	2	No inventory

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Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations