Onondaga County, New York
SDWIS compliance plate
Sheet NY067 · Onondaga County 88 sys · 2,561 viol · #116/3254
VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-MID · SRC-GW · SYS-MID · BOOK-FULL
- VIOL-SEVERE 83.0% flagged
- HEALTH-LOW 17.7% health
- RANK-TOP #116/3254
- PHOTO-FINISH ±0.3 pp
- PFAS-MID 28.6% detect
- SRC-GW GW lead 88%
- SYS-MID 88 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Orleans County ( -0.3 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Onondaga County ranks #116 of 3,254 counties by people served, and #6 of 58 counties in New York. See methodology · corpus placement.
Onondaga County standing, lower-flagged corpus third
Flagged-system rate 83.0% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 17.7% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 28.6% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #116 of 3,254 · #6 of 58 in New York.
Flagged-rate neighbourhood around Onondaga County
Lowest/highest poles plus in-state counties nearest Onondaga County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond New York
Lower-flagged peers for Onondaga County
Cross-state counties nearest Onondaga County on flagged-system share (83.0%) and cumulative violation count (2,561). 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.