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Counties → Connecticut

Litchfield County, Connecticut

SDWIS compliance plate

Sheet CT005 · Litchfield County 345 sys · 27,780 viol · #520/3254

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

  • VIOL-SEVERE 96.2% flagged
  • HEALTH-LOW 9.9% health
  • RANK-TOP #520/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 98%
  • SYS-LARGE 345 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Fairfield County (+ 0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Litchfield County ranks #520 of 3,254 counties by people served, and #5 of 8 counties in Connecticut. See methodology · corpus placement.

Litchfield County standing, mid-flagged corpus third

Flagged-system rate 96.2% is in the corpus middle third (≤ 100.0% 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 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #520 of 3,254 · #5 of 8 in Connecticut.

Flagged-rate neighbourhood around Litchfield County

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

0% 20% 40% 60% 80% 100% New London · lowest New Haven · near Fairfield · near 91.4% 93.5% 94.3% 96.2% 96.4% 97.3%

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

Water Systems

System Name Population Violations PFAS
Torrington Water Company 37,915 105 Clean
Watertown Water & Sewer Authority 9,972 144 Clean
Winsted Water Works 7,784 191 Clean
Watertown Fire District 6,718 178 Clean
Ctwc - Naugatuck Reg-Terryville System 5,607 9 Clean
Ctwc - Naugatuck Reg-Thomaston System 3,789 84 Clean
Aquarion-Litchfield Regional 3,097 12 Clean
Aquarion-Salisbury 1,932 23 -
Aquarion-New Hartford 1,872 132 Clean
Aquarion-North Canaan 1,481 15 -
Lone Oak Campground 1,250 29 -
Aquarion-Woodbury 1,209 231 -
Aquarion-Norfolk 913 19 -
Woodlake Tax District 912 63 -
Kenmont & Kenwood Camps 825 21 -
Aquarion-Kent 817 22 -
Sharon Water & Sewer Commission 803 309 -
Shepaug Middle/High School 770 42 -
Housatonic Valley Regional Hs 750 97 -
Clc Owners Corporation 736 454 -
Kent School Corp (Valley Campus) 722 190 -
Ski Sundown, Inc. 600 13 -
Watertown Water & Sewer - Westgate 600 58 -
Kent Falls State Park 573 25 -
Salisbury School 520 74 -
Camp Jewell-Senior 500 114 -
Camp Jewell-Sunrise 500 303 -
Sunny Valley Tax District 500 121 -
Aquarion-Falls Village 488 236 -
Village Market Place 462 218 -
Bucks Rock Camp 450 12 -
Bethlehem Elementary School/District 14 406 63 -
Rumsey Hall School 398 108 -
Aquarion-Meadowbrook 396 51 -
Antolini Elementary School 385 52 -
Barkhamsted Elementary School 360 26 -
Camp Mattatuck- Well #2 System 350 63 -
Washington Montessori School 350 146 -
Aquarion-Carmen Hill 322 207 -
Candlewood Trails Association, Inc. 312 350 -
Edmund D. Strang Scout Reservation 300 16 -
Lake Warramaug/Campground Well 300 29 -
Lake Warramaug/Day Use Well 300 48 -
Birch Groves Association, Inc 300 225 -
The Frederick Gunn School, Inc. 300 291 -
Macedonia Brook S.p./Camp Site #30 287 21 -
Old Farms Condominium Association Inc 285 498 -
Torrington Country Club 280 56 -
West Hill Lake Water Assoc. 276 270 -
Aquarion-Forest Hills 265 205 -

Compare beyond Connecticut

Mid-flagged peers for Litchfield County

Cross-state counties nearest Litchfield County on flagged-system share (96.2%) and cumulative violation count (27,780). 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.