St. Thomas Island, US Virgin Islands
SDWIS compliance plate
Sheet VI030 · St. Thomas Island 112 sys · 416 viol · #866/3254
VIOL-SEVERE · HEALTH-LOW · RANK-UPPER · BELOW-PEER · PFAS-HIGH · SRC-GW · SYS-MID · BOOK-FULL
- VIOL-SEVERE 74.1% flagged
- HEALTH-LOW 19.5% health
- RANK-UPPER #866/3254
- BELOW-PEER 5.9 pp cleaner
- PFAS-HIGH 50.0% detect
- SRC-GW GW lead 95%
- SYS-MID 112 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: St. John Island (+ 5.9 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, St. Thomas Island ranks #866 of 3,254 counties by people served, and #2 of 3 counties in US Virgin Islands. See methodology · corpus placement.
St. Thomas Island standing, lower-flagged corpus third
Flagged-system rate 74.1% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 19.5% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #866 of 3,254 · #2 of 3 in US Virgin Islands.
Flagged-rate neighbourhood around St. Thomas Island
Lowest/highest poles plus in-state counties nearest St. Thomas Island on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond US Virgin Islands
Lower-flagged peers for St. Thomas Island
Cross-state counties nearest St. Thomas Island on flagged-system share (74.1%) and cumulative violation count (416). In-state neighbours stay on the compliance plate above.
Similar flagged-system rate
Nearest cross-state counties by % of SDWIS systems with at least one violation on record.
Similar violation load
Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).
Read our methodology · Check your water system - how this data is sourced, computed, and verified.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.