PlainWater

Delaware County, New York

SDWIS compliance plate

Sheet NY025 · Delaware County 140 sys · 12,320 viol · #1329/3254

VIOL-SEVERE · HEALTH-LOW · RANK-MID · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-LARGE · BOOK-FULL

  • VIOL-SEVERE 98.6% flagged
  • HEALTH-LOW 1.2% health
  • RANK-MID #1329/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 50.0% detect
  • SRC-GW GW lead 96%
  • SYS-LARGE 140 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Sullivan County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Delaware County ranks #1,329 of 3,254 counties by people served, and #51 of 58 counties in New York. See methodology · corpus placement.

Delaware County standing, mid-flagged corpus third

Flagged-system rate 98.6% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 1.2% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #1,329 of 3,254 · #51 of 58 in New York.

Flagged-rate neighbourhood around Delaware County

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

0% 20% 40% 60% 80% 100% Niagara · lowest Delaware · this county Rensselaer · near Cortland · highest 38.1% 98.5% 98.6% 98.6% 98.6% 98.7% 100%

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

Water Systems

System Name Population Violations PFAS
Delhi Village 3,833 135 Clean
Sidney Village 3,800 219 Detected
Walton Village 3,010 97 -
Stamford Village 1,280 15 -
Hancock Village 1,182 218 -
French Woods Arts Camp 850 24 -
Peaceful Valley Campsites 740 135 -
Hobart Village 700 102 -
Downsville Water District 617 170 -
Davenport Water District 600 371 -
Margaretville Village 600 45 -
Roxbury Water District 600 246 -
Ski Plattekill 500 183 -
Franklin Village 481 51 -
Grand Gorge Water District 480 76 -
South Kortright Central School 464 21 -
Arkville Water District 400 650 -
Denver Water District 361 53 -
Fleischmanns Village 352 19 -
Bloomville Water District 350 0 -
Ox Bow Campsites 340 62 -
Little Pond State Campsite 300 31 -
Andes Water District 260 49 -
I-88 Rest Area Wells Bridge (West) 255 46 -
Route 17 Rest Area - East Branch 250 81 -
Suny Delhi Lower Campus 250 64 -
I-88 Rest Area Unadilla (Eastbound) 245 38 -
Camp Chavivin 230 32 -
Mountainview Mobile Home Park 222 42 -
East Sidney Lake Park 205 44 -
Delaware County Resource Center 202 29 -
Camp Nubar 200 77 -
Dcmo Boces 200 41 -
Saputo Dairy Foods USA, LLC 200 36 -
Stratton Falls Campsite 184 46 -
Hamden Water Dist 1 - Hamden 175 103 -
Walton Country Meadow Park 165 331 -
Treadwell Water District 164 264 -
East Branch Valley Water District 160 252 -
Cooks Falls Water District 150 384 -
Fishs Eddy Community Water Sup 150 171 -
Camp Lman Achai 150 47 -
Oppenheimers Regis Hotel 145 45 -
Delhi Rehab 144 288 -
Bovina Center Water Dist. No 1 142 126 -
Russell Brook Campsite 140 72 -
Hamden Water Dist 2 - Delancey 136 66 -
Hidden Inn 125 92 -
Stamford Golf Club 125 71 -
Frenchwoods Sports and Arts Camp 125 19 -

Compare beyond New York

Mid-flagged peers for Delaware County

Cross-state counties nearest Delaware County on flagged-system share (98.6%) and cumulative violation count (12,320). 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.