PlainWater
Counties → New York

Onondaga County, New York

Water Systems
88
Population Served
615,889
Total Violations
2,561
454 health-based
PFAS Detected
2
of 7 tested

Violation Analysis

83.0%
Systems with Violations
29.1
Avg Violations per System
17.7%
Health-Based Violations

Water Source Types

GW
40 systems (45%)
SW
10 systems (11%)

PFAS Contamination

7
Systems Tested
2
PFAS Detected
28.6%
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

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

No violations on record (3) One or more violations (47)

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
Ocwa 350,000 7 Detected
Syracuse City 192,000 106 Clean
Dewitt Wds - South 16,200 54 Clean
Clay Wds 16,000 35 Clean
Dewitt Wds - North 13,600 33 Clean
Baldwinsville Village 9,200 15 Detected
Skaneateles Wds 3,500 64 Clean
Skaneateles Village 2,610 73 -
Elbridge Village 1,519 77 -
McDonalds of Lafayette 1,500 8 -
Jordan Village 1,400 85 -
Tully Village 930 10 -
Byrne Dairy Lafayette Store 500 4 -
Fabius High School 499 4 -
Sunset Park Campground Inc 450 32 -
Onondaga Nation - Native American 450 0 -
C Grant Grimshaw School 449 16 -
Lafayette High School 448 3 -
Champion Park 400 16 -
Fabius Elementary School 340 0 -
Rolling Hills Community, LLC 200 73 -
Fastrac Lafayette 200 45 -
Hidden Hills 200 58 -
Cardiff Tookes Spring 152 4 -
Butternut Landing MHP 129 30 -
Vesper Hills Golf Club 110 31 -
Tanner Valley Golf Course 100 32 -
Tully Hill-N-Dale C C 100 81 -
Mandana Inn 100 24 -
Lords Hill Apartments 100 398 -
Cindys Old Tymes Cafe 100 71 -
Burger King Restaurant #6631 86 36 -
Pompey Club (The) 80 30 -
Willow Wood Apartments 80 40 -
Delphi Falls Park 78 58 -
Knoxies Pub 75 32 -
Valis Golden Apple Restaurant 75 11 -
Otisco Lake Campground 75 9 -
Hilltop Ice Cream 75 37 -
Apple Ridge Apartments West 75 43 -
Festival Garden Apartments 72 24 -
Marcellus Pizza 72 28 -
Lafayette Inn 70 2 -
Mobile Manor Mobile Home Park 58 170 -
Lafayette Post Office (Ran Bldg) 55 6 -
Brian Reeves Route 370 Mlc 53 27 -
The Nest Tavern 51 31 -
Ocwa Skyridge Community WD 50 0 -
Wildwood Event Center 50 48 -
Dollar General Pompey 50 1 -

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
Orleans County
23 systems · 535,814 served · 437 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Onondaga County? ▼
Onondaga County has 2,561 total drinking water violations across 88 water systems, of which 454 are health-based violations. 83.0% of systems have at least one violation.
How many people get water from Onondaga County systems? ▼
Water systems in Onondaga County serve approximately 615,889 people through 88 public water systems.
Has PFAS been detected in Onondaga County water? ▼
Of 7 water systems tested for PFAS in Onondaga County, 2 had PFAS detected (28.6% detection rate).
What types of water sources supply Onondaga County? ▼
Water systems in Onondaga 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. 17.7% of Onondaga 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.