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Counties → New York

Rensselaer County, New York

SDWIS compliance plate

Sheet NY083 · Rensselaer County 147 sys · 3,867 viol · #456/3254

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

  • VIOL-SEVERE 98.6% flagged
  • HEALTH-LOW 7.7% health
  • RANK-TOP #456/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 90%
  • SYS-LARGE 147 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: St. Lawrence County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Rensselaer County ranks #456 of 3,254 counties by people served, and #18 of 58 counties in New York. See methodology · corpus placement.

Rensselaer 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 7.7% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #456 of 3,254 · #18 of 58 in New York.

Flagged-rate neighbourhood around Rensselaer County

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

0% 20% 40% 60% 80% 100% Niagara · lowest Rensselaer · this county Delaware · 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
Troy City PWS 51,401 40 Clean
East Greenbush General W.D. 15,843 22 Clean
North Greenbush Consolidated District 10,226 15 Clean
Rensselaer City PWS 9,300 23 Clean
Brunswick Consolidated Water District 7,050 51 Clean
Hoosick Falls (V) PWS 4,925 12 Clean
Grafton Lakes State Park 2,500 4 -
Castleton Village PWS 2,413 6 -
Regeneron(temple Lane) 2,000 2 -
Schaghticoke Consolidated WD #1 1,975 25 -
Schodack Consolidated Water District 101 1,946 2 -
Hoosick Falls Central School 1,300 8 -
Nassau (V) PWS 1,250 8 -
Schaghticoke (V) PWS 1,102 14 -
Schaghticoke Water District #3 1,100 15 -
Averill Park High School 1,059 5 -
Algonquin School 1,000 5 -
Cumberland Farm #1619 805 32 -
Poestenkill Wd#1 752 34 Clean
Berlin Water District # 2 700 50 -
Schaghticoke Water District #2 600 24 -
Berlin Middle/High School 600 9 -
Camp Is-Sho-Da 587 22 -
Stewarts # 338 500 2 -
Miller Hill Elementary School 418 10 -
West Sand Lake Elem School 417 4 -
Saleems Food Mart 400 19 -
Daves Market 350 40 -
Rotary Scout Reservation 305 18 -
Pine Haven Mobile Court 300 10 -
Liberty Ridge Farms 300 21 -
Vanderheyden Hall , Inc. 280 42 -
Cedar Acres Mobile Home Park 276 2 -
Cherry Plain Day Use Area 275 8 -
Bennington Battlefield 250 5 -
Dunkin Wsl 250 7 -
Dunco Inc 250 54 -
Walgreens-West Sand Lake 250 23 -
Hoosac School 249 38 -
Brunswick Water District #11 249 32 -
Petersburgh Water District 240 77 -
Taconic 240 8 -
43 Mall LLC 235 25 -
Hanaford Brother (Wsl) 218 36 -
Terrace Haven Mobile Home Park 210 74 -
Curtis Mobile Home Park 210 11 -
Ravenwood Estates 200 108 -
Broken Wheel Campground 200 18 -
Aqua Vista 200 4 -
Herberts East/ Birch Hill 200 160 -

Compare beyond New York

Mid-flagged peers for Rensselaer County

Cross-state counties nearest Rensselaer County on flagged-system share (98.6%) and cumulative violation count (3,867). 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

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

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.