PlainWater

Grand Isle County, Vermont

SDWIS compliance plate

Sheet VT013 · Grand Isle County 26 sys · 2,478 viol · #2214/3254

VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST

  • VIOL-SEVERE 92.3% flagged
  • HEALTH-LOW 18.3% health
  • RANK-LOWER #2214/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 54%
  • SYS-SMALL 26 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Washington County ( -0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Grand Isle County ranks #2,214 of 3,254 counties by people served, and #13 of 14 counties in Vermont. See methodology · corpus placement.

Grand Isle County standing, lower-flagged corpus third

Flagged-system rate 92.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 18.3% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Grand Isle County . Population served ranks #2,214 of 3,254 · #13 of 14 in Vermont.

Flagged-rate neighbourhood around Grand Isle County

Lowest/highest poles plus in-state counties nearest Grand Isle County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Franklin · lowest Grand Isle · this county Orange · near Essex · highest 89% 92.1% 92.3% 92.7% 92.9% 93.5% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

Compare beyond Vermont

Lower-flagged peers for Grand Isle County

Cross-state counties nearest Grand Isle County on flagged-system share (92.3%) and cumulative violation count (2,478). 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.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

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.