PlainWater
Counties → New York

Tompkins County, New York

Water Systems
112
Population Served
102,994
Total Violations
1,977
195 health-based
PFAS Detected
1
of 3 tested

Violation Analysis

89.3%
Systems with Violations
17.7
Avg Violations per System
9.9%
Health-Based Violations

Water Source Types

GW
40 systems (36%)
SW
10 systems (9%)

PFAS Contamination

3
Systems Tested
1
PFAS Detected
33.3%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Tompkins New York water systems by violation status, EPA SDWIS records.

No violations on record (5) One or more violations (45)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Cornell University 31,581 31 Clean
Ithaca City 29,457 28 Clean
Ithaca Town WD 13,000 14 Detected
Cayuga Heights Village 3,170 0 -
Lansing (V) 3,100 0 -
Lansing (T) Consolidated WD 3,000 0 -
Groton Village 2,470 11 -
Trumansburg Village 2,300 22 -
Newfield Wds 2,300 4 -
Dryden Village 2,000 177 -
Dryden WD 725 0 -
Pinecreek Campground 495 29 -
Hanshaw Village MHP 447 17 -
Treman State Park-Upper 400 22 -
Ulysses WD #3 400 22 -
Caroline Elementary School 350 14 -
Ithaca Estates 342 4 -
Enfield Elementary School 282 11 -
West Danby WD 265 15 -
Country Acres MHP 253 10 -
Little Creek MHP 252 23 -
Yellow Barn WD 250 16 -
William George Agency 250 5 -
Village Taqueria 220 18 -
Sandy Creek Mobile Home Park 215 6 -
Buttermilk Falls State Park - Upper 200 17 -
Dandy Mini Mart #33-C 200 7 -
Dandy Mini-Mart #47-F 200 6 -
Newfield Estates 160 24 -
McLean-Cassavant Elementary School 152 7 -
Spruce Row Campground 150 16 -
Freeville Elementary School 133 8 -
Elm Tree Inn 129 2 -
Pleasant View MHP 125 1 -
Beaconview MHP 110 46 -
Country Gardens Apartments 110 19 -
Creekwood Apartments 110 9 -
Stork H & E Turbo Blading 110 4 -
Ithaca Yacht Club 100 37 -
Groton Golf and Recreation Association 100 18 -
Willow Glen Christian School 100 3 -
Franziska Racker Centers 100 26 -
Dandy Mini Mart #77-E 100 5 -
Subway Dryden 100 9 -
Khmer Angkor 100 13 -
Frosty Cow 100 15 -
Dollar General Enfield 100 0 -
Fall Creek Park 90 4 -
Seabring Inn 80 38 -
Hillview Terrace MHP 80 11 -

Other Counties in New York

Richmond County
1 systems · 8,271,000 served · 47 violations
Suffolk County
152 systems · 1,387,905 served · 3,402 violations
Nassau County
44 systems · 1,387,489 served · 7,471 violations
Westchester County
274 systems · 992,853 served · 15,832 violations
Erie County
108 systems · 955,615 served · 7,606 violations
Onondaga County
88 systems · 615,889 served · 2,561 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Tompkins County? ▼
Tompkins County has 1,977 total drinking water violations across 112 water systems, of which 195 are health-based violations. 89.3% of systems have at least one violation.
How many people get water from Tompkins County systems? ▼
Water systems in Tompkins County serve approximately 102,994 people through 112 public water systems.
Has PFAS been detected in Tompkins County water? ▼
Of 3 water systems tested for PFAS in Tompkins County, 1 had PFAS detected (33.3% detection rate).
What types of water sources supply Tompkins County? ▼
Water systems in Tompkins County use GW (40 systems), SW (10 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 9.9% of Tompkins County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - 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 Editorial

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.