PlainWater
Counties → Delaware

New Castle County, Delaware

Water Systems
76
Population Served
541,043
Total Violations
1,173
577 health-based
PFAS Detected
5
of 8 tested

Violation Analysis

67.1%
Systems with Violations
15.4
Avg Violations per System
49.2%
Health-Based Violations

Water Source Types

GW
45 systems (59%)
SW
5 systems (7%)

PFAS Contamination

8
Systems Tested
5
PFAS Detected
62.5%
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

New Castle Delaware water systems by violation status, EPA SDWIS records.

No violations on record (16) One or more violations (34)

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
Artesian Water Company 231,114 31 Detected
Wilmington Water Department 107,976 30 Detected
Veolia Water Delaware, Inc 100,495 46 Detected
Newark Water Department 40,000 42 Detected
Middletown Water Department 17,700 26 Clean
Municipal Services Commission 5,549 5 Detected
East Ncc District 5,538 4 Clean
North West Pump District 4,149 7 Clean
Willow Grove Mill 3,090 0 -
Delaware City Water Department (Awc) 2,610 4 -
Delaware Correctional Center 2,000 18 -
Wilmington Vamc 1,695 0 -
Siemens Healthcare Diagnostics 1,500 10 -
Parkside 1,467 0 -
Greenville Country Club 1,200 28 -
South East Pump District 936 4 -
Dove Run 909 0 -
Dove Run Shopping Center 855 0 -
Villagebrook 847 0 -
Shore Stop #227 Townsend 800 33 -
Delaware Museum of Natural History 700 15 -
Fort Delaware State Park 700 32 -
Winterthur 687 7 -
Hunters Run 683 0 -
Kingsmill 381 0 -
Brick Mill Early Childhood Center 360 0 -
St Andrews Apartments 360 0 -
Ascot Landing Subdivision 338 0 -
301 Plaza 300 3 -
St Andrews Apartment New Addition 272 0 -
Summit Village Shopping Center 250 0 -
Helens Sausage House 250 0 -
Vic Mead Hunt Club 250 19 -
Glasgow Pines II 235 0 -
Meridian Crossing Apartments 220 0 -
Ponds of Odessa (Awc) 216 2 -
Bayview Improvement Company (Awc) 214 7 -
Frederick Lodge Pump District 204 6 -
St Andrews School I 200 20 -
Brandywine Creek State Park 200 32 -
Ashland Nature Center System #1 200 13 -
Emergency Operations Center 200 11 -
Shoppes of Mt Pleasant 200 20 -
Drawyers Creek Pump District 192 8 -
Summit Pond Pump District 177 9 -
Bidermann Golf Course 175 29 -
Centreville Layton School System I 170 46 -
Country Center Girl Scout Camp 165 4 -
Buckleys Tavern Complex 150 9 -
St Andrews School II 140 32 -

Other Counties in Delaware

Sussex County
251 systems · 382,938 served · 4,772 violations
Kent County
133 systems · 159,649 served · 3,160 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in New Castle County? ▼
New Castle County has 1,173 total drinking water violations across 76 water systems, of which 577 are health-based violations. 67.1% of systems have at least one violation.
How many people get water from New Castle County systems? ▼
Water systems in New Castle County serve approximately 541,043 people through 76 public water systems.
Has PFAS been detected in New Castle County water? ▼
Of 8 water systems tested for PFAS in New Castle County, 5 had PFAS detected (62.5% detection rate).
What types of water sources supply New Castle County? ▼
Water systems in New Castle County use GW (45 systems), SW (5 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. 49.2% of New Castle 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.