TRI Facilities
65
Moderate
DE · EPA TRI · SDWIS · Superfund
Delaware environmental disclosure record
According to EPA's 2023 Toxics Release Inventory, Safe Drinking Water Information System, and Superfund National Priorities List extracts, this is Delaware's full public registry profile, toxic releases, drinking-water systems, and Superfund sites in one place.
- TRI facilities
- 65
- Reported releases
- 34.2M lbs
- #43 of 56
- Water systems
- 207
- Superfund NPL sites
- 26
Delaware vs. every U.S. state
Cumulative TRI-reported release pounds, with this state marked in the national distribution
34M lbs 23rd percentile higher than 23% of 56 states with TRI reporters
Each bar is a $1M-wide band; taller bars hold more states with TRI reporters. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
DE regulatory profile by statute
Violation/site counts mapped to the EPA statutes this portal tracks
- CWA · NPDES
- RCRA · Subtitle C
What this shows Counts are mapped to statute as a structural proxy and reflect reported activity, not toxicity-weighted or population-adjusted risk. Clean Air Act (Title V) permit data is not currently ingested by this portal, so air-permit compliance is not shown here.
How Delaware compares across two EPA disclosure measures
The highlighted point is Delaware. The vertical axis is the share of tracked water systems with at least one health-based SDWIS record; the horizontal axis is TRI-reported pounds per facility on a logarithmic scale so the full state distribution stays readable. The crosshairs use the portal’s published national benchmark medians.
This matrix compares disclosure rates, not toxicity, exposure, current compliance, or drinking-water safety. A lower position on either axis is not a safety rating; use the underlying facility and water-system records for context.
According to EPA TRI, SDWIS, and Superfund NPL extracts, Delaware (DE) lists 65 TRI-reporting facilities disclosing 34.2M lbs of toxic releases. The same extracts list 26 Superfund sites and 207 EPA-regulated water systems, of which 48 carry health-based SDWIS violation rows. PlainEnviro's composite environmental health score for Delaware is 57/100 (grade F), benchmarked against all U.S. states on chemical release intensity, drinking-water health violations, Superfund site burden, and water violation rate. This is a percentile-derived composite from federal disclosure counts, not a clinical health-risk assessment.
F 57
Delaware Environmental Health Score
A percentile-benchmarked 0–100 composite from 4 EPA federal datasets, with weight redistribution for any unavailable dimension
Chemical Release Intensity F 50
526K (lbs per facility) Drinking Water Health Violations C 78
23.2% (% of systems) Superfund Site Burden F 5
40.0 (sites per 100 facilities) Water Violation Rate B 86
0.8 (violations per system) Benchmarks derived from EPA TRI, SDWIS, and Superfund NPL extracts across all 56 U.S. states and territories
Water Systems
207
Low
Superfund Sites
26
High
Total Releases
34.2M lbs
Moderate
Compliance Snapshot - DE
Sites with no recorded health violations 82.4%
Sites with at least one open violation 17.6%
Delaware's profile joins three independently maintained EPA programs into one statewide record: the Toxics Release Inventory (TRI, EPCRA Section 313 industrial disclosures), the Safe Drinking Water Information System (SDWIS, Safe Drinking Water Act compliance), and the Superfund National Priorities List. Each program uses its own reporting cadence and facility-identification scheme; PlainEnviro joins them by matched facility and system location rather than a shared federal ID, so a site absent from one program is never assumed absent from another. The counts below reflect the portal's rebuild as of August 2026.
Activity clusters in counties such as Sussex, New Castle, Kent, which account for the highest combined facility, water-system, and Superfund presence. Monitoring and reporting violations are not included in the SDWIS counts shown here.
Every figure reflects the public regulatory record as filed with the U.S. Environmental Protection Agency and is not weighted for toxicity, geographic footprint, or population exposure. A state can rank high in any individual metric because of industrial history, naturally occurring contaminants in source water, or simply the number of reporting facilities, not because current residents face unsafe conditions. Drill into any county or water system below for the full disclosure record.
What does this state's environmental record show?
TRI Facilities
65
Water Systems
207
Superfund Sites
26
Health-Based Violation Records
160
Total Releases
34.2M lbs
cumulative, all reported years
Systems with Records
48
water systems
Release-over-release change
What changed for Delaware: EPA TRI 2023 reporting year
Same facilities, both years
-14.4%
51 facilities that filed in 2022 and 2023
Whole inventory
-14.4%
6.7 million lb → 5.8 million lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Delaware's total reported releases fell from 6.7 million lb in 2022 to 5.8 million lb in 2023, based on EPA TRI filings.
- Delaware's land releases fell from 583.4 thousand lb in 2022 to 39.7 thousand lb in 2023, based on EPA TRI filings.
- Delaware's off-site transfers rose from 237.7 thousand lb in 2022 to 332.1 thousand lb in 2023, based on EPA TRI filings.
- Delaware's air releases fell from 541.2 thousand lb in 2022 to 487.5 thousand lb in 2023, based on EPA TRI filings.
Largest Polluters
View all →| # | Facility | Total Releases |
|---|---|---|
| 1 | Delaware City Refinery | 27.7M lbs |
| 2 | Mountaire Farms of Delaware Inc | 2.6M lbs |
| 3 | Perdue Foods LLC - Georgetown Processing Plant | 2.2M lbs |
| 4 | Allen Harim Foods LLC - Harbeson | 434.5K lbs |
| 5 | Sun Chemical | 274.1K lbs |
| 6 | Croda Inc | 246.3K lbs |
| 7 | Air Products & Chemicals | 104.7K lbs |
| 8 | Dupont Electronic Materials Cmp LLC B2 B3 B8 | 93.4K lbs |
| 9 | V&s Delaware Galvanizing LLC | 71.7K lbs |
| 10 | Simmons Bridgeville | 60.3K lbs |
| 11 | Edge Moor/hay Road Energy Centers | 58.9K lbs |
| 12 | Air Liquide Advanced Separations | 55.3K lbs |
| 13 | Justin Tanks LLC | 42.8K lbs |
| 14 | Nexpera - Red Lion Plant | 26.5K lbs |
| 15 | Dentsply Sirona - Milford Site | 25.8K lbs |
| 16 | Handytube LLC | 23.4K lbs |
| 17 | Indian River Generating Station | 19.7K lbs |
| 18 | Clarios LLC | 19.3K lbs |
| 19 | Noramco | 18.9K lbs |
| 20 | Hanover Foods Corp | 18.3K lbs |
Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| FOREST PARK | 25 | 36 |
| CHERRY CREEK VALLEY | 78 | 13 |
| EVERGREEN POST ACUTE | 256 | 12 |
| HOME TOWN VILLAGE OF COOL BRANCH | 654 | 9 |
| MILLSBORO WATER DEPARTMENT | 8,568 | 6 |
| BETHANY CREST LLC | 115 | 6 |
| ARTESIAN SOUTHERN SUSSEX REGIONAL | 18,215 | 6 |
| SELBYVILLE WATER DEPARTMENT | 3,502 | 5 |
| ARTESIAN WATER COMPANY | 231,114 | 4 |
| REHOBOTH PUMP DISTRICT (TUI) | 81,417 | 4 |
| TALL PINES RESORT COMMUNITY SYS1 | 538 | 4 |
| WHISPERING PINES MOBILE HOME PARK | 325 | 4 |
| FISH HOOK MOBILE HOME PARK | 72 | 3 |
| LAUREL WATER DEPARTMENT | 3,984 | 3 |
| BROADKILN BEACH WATER COMPANY (TUI) | 3,171 | 2 |
| BAYSHORE MOBILE HOME PARK | 533 | 2 |
| CEDAR VILLAGE LLC | 600 | 2 |
| CAREY ESTATES, LLC | 312 | 2 |
| GREENWOOD WATER DEPARTMENT | 973 | 2 |
| DOVER WATER DEPARTMENT | 39,491 | 2 |
Cities with Water Issues
Newark
11 water systems
Dover
10 water systems
Rehoboth Beach
8 water systems
Smyrna
8 water systems
Lewes
7 water systems
Millsboro
6 water systems
Georgetown
6 water systems
Wilmington
4 water systems
Seaford
4 water systems
Greenwood
4 water systems
Laurel
4 water systems
Magnolia
3 water systems
New Castle
2 water systems
Kenton
2 water systems
Ocean View
2 water systems
Milford
1 water system
Blades
1 water system
Clarksville
1 water system
Superfund Sites (26)
Counties (3 total)
| County | Facilities |
|---|---|
| Sussex | 20 |
| New Castle | 35 |
| Kent | 10 |
Cities with Environmental Records
New Castle
10 facilities · 2 water systems
Newark
7 facilities · 11 water systems
Wilmington
6 facilities · 4 water systems
Seaford
4 facilities · 4 water systems
Bridgeville
4 facilities · 1 water systems
Milford
4 facilities · 1 water systems
Millsboro
3 facilities · 6 water systems
Middletown
3 facilities · 4 water systems
Newport
3 facilities · 0 water systems
Bear
2 facilities · 10 water systems
Dover
2 facilities · 10 water systems
Georgetown
2 facilities · 6 water systems
Claymont
2 facilities · 1 water systems
Clayton
2 facilities · 0 water systems
Lewes
1 facilities · 7 water systems
Selbyville
1 facilities · 3 water systems
Camden
1 facilities · 2 water systems
Dagsboro
1 facilities · 2 water systems
Frankford
1 facilities · 2 water systems
Cheswold
1 facilities · 0 water systems
Frequently Asked Questions
How many TRI facilities are in Delaware? ▼
Delaware has 65 facilities that report to the EPA Toxic Release Inventory (TRI). These facilities have collectively reported 34.2M lbs in total toxic chemical releases. TRI data is self-reported annually by facilities that manufacture, process, or use listed toxic chemicals above threshold amounts.
Does Delaware have Superfund sites? ▼
Yes, Delaware has 26 sites on the EPA Superfund National Priorities List (NPL). Superfund sites are contaminated locations identified for long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
What does EPA SDWIS list for drinking water in Delaware? ▼
Delaware has 207 EPA-regulated water systems in the Safe Drinking Water Information System (SDWIS) extract used here. 48 water systems have a health-based violation row (MCL exceedance) in this historical extract. A past registry row is not a current drinkability verdict. For current utility conditions, contact the local water utility or the Delaware drinking water program. Source: EPA SDWIS.
What environmental data is available for Delaware? ▼
PlainEnviro provides three categories of EPA environmental data for Delaware: Toxic Release Inventory (TRI) data covering 65 industrial facilities, Safe Drinking Water Information System (SDWIS) data for 207 water systems, and Superfund National Priorities List (NPL) data for 26 contaminated sites.
How does Delaware compare to other states on EPA disclosure counts? ▼
Delaware has 65 TRI facilities with 34.2M lbs in total releases, 26 Superfund sites, and 160 water system violations on record. These are federal disclosure counts; they are not toxicity-weighted or population-adjusted risk scores. Source: EPA TRI, SDWIS, and Superfund NPL databases.
What is Delaware's environmental health score? ▼
PlainEnviro's composite environmental health score for Delaware is 57/100 (grade F). This score combines four percentile-benchmarked dimensions from EPA federal extracts: chemical release intensity per TRI facility, drinking-water health violation rate from SDWIS, Superfund site burden relative to industrial activity, and overall water violation rate. Scores are benchmarked against all 56 U.S. states and territories. When a dimension lacks data, its weight redistributes to the remaining dimensions so the score never deflates from missing inputs. This is a registry-count composite, not a clinical exposure or health-outcome assessment.
Explore More Data for Delaware
TRI Facilities in Delaware →
Every toxic-release facility reporting in the state, ranked by volume
Drinking Water Systems in Delaware →
Community water systems and their violation records
Air Quality in Delaware →
County-level AQI from EPA monitoring stations
Compare states by burden →
EJ screening scores for every U.S. county
State environmental rankings →
How states compare on releases, water and Superfund
Browse all states →
Environmental profiles for every U.S. state
About This Data
This page aggregates environmental data from three EPA programs for Delaware: the Toxic Release Inventory (TRI) for industrial chemical releases, the Safe Drinking Water Information System (SDWIS) for water quality, and the Superfund National Priorities List (NPL) for hazardous waste cleanup sites.
PlainEnviro presents this data without advocacy framing. Numbers reflect reported data and may not capture all environmental activity. For specific health or environmental concerns, contact your state environmental agency.
What to do with Delaware's data
Use this state profile as a starting point, then drill into the specific dataset that matters to you.
- Check the 65 TRI facilities reporting in Delaware for the largest reported releases near a specific county. View facilities
- 48 water systems in the state have a recorded health-based violation, check if yours is one of them. Check water systems
- See how Delaware compares to other states on releases, water violations, and Superfund sites. State rankings
Reported data reflects what facilities and agencies disclose to the EPA; it is not a complete measure of environmental risk or a substitute for local guidance.
Use and verify this record
Delaware's profile brings together EPA release, drinking-water, and Superfund records. It reports the underlying programs without making a health or environmental-risk determination.
State environmental figures are computed directly from EPA data. The methodology records the joins, definitions, and refresh cadence for each program.
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.