Tompkins County, New York
SDWIS compliance plate
Sheet NY109 · Tompkins County 112 sys · 1,977 viol · #564/3254
VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-MID · SRC-GW · SYS-MID · BOOK-FULL
- VIOL-SEVERE 89.3% flagged
- HEALTH-LOW 9.9% health
- RANK-TOP #564/3254
- PHOTO-FINISH ±1.0 pp
- PFAS-MID 33.3% detect
- SRC-GW GW lead 87%
- SYS-MID 112 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Jefferson County (+ 1 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Tompkins County ranks #564 of 3,254 counties by people served, and #26 of 58 counties in New York. See methodology · corpus placement.
Tompkins County standing, lower-flagged corpus third
Flagged-system rate 89.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 9.9% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 33.3% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #564 of 3,254 · #26 of 58 in New York.
Flagged-rate neighbourhood around Tompkins County
Lowest/highest poles plus in-state counties nearest Tompkins County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond New York
Lower-flagged peers for Tompkins County
Cross-state counties nearest Tompkins County on flagged-system share (89.3%) and cumulative violation count (1,977). 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.