TRI Facilities
206
EPCRA Section 313 reporters
2023 EPA TRI data 206 facilities 456 water systems
Maryland Environmental Profile
According to the U.S. Environmental Protection Agency's 2023 Toxics Release Inventory, Safe Drinking Water Information System, and Superfund National Priorities List, this is Maryland's (MD) full public environmental-compliance record - toxic releases, drinking-water systems, and Superfund sites in one place.
MD regulatory profile by statute
Violation/site counts mapped to the EPA statutes this portal tracks
- CWA · NPDES
Clean Water Act, NPDES (water-system health violations)
179 records
- RCRA · Subtitle C 26
RCRA Subtitle C (Superfund-site proxy)
26 records
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.
Water Systems
456
SDWIS regulated
Superfund Sites
26
21 active NPL
Total Releases
25.5M lbs
TRI cumulative disclosure
Compliance Snapshot - MD
Sites with no recorded health violations 73.0%
Sites with at least one open violation 27.0%
Maryland consolidates three federal EPA datasets into one statewide environmental profile: 206 Toxics Release Inventory (TRI) facilities reporting under EPCRA Section 313, 456 community water systems regulated under the Safe Drinking Water Act, and 26 sites on the Superfund National Priorities List.
TRI facilities in MD have cumulatively disclosed 25.5M lbs of toxic chemical releases, while SDWIS records show 506 total violations across the state's regulated water systems, of which 179 systems carry an active health-based violation (MCL exceedance or treatment-technique failure). Activity clusters in counties such as Anne Arundel, Charles, Frederick, which account for the highest combined facility, water-system, and Superfund presence.
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
206
Water Systems
456
Superfund Sites
26
Total Violations
506
Total Releases
25.5M lbs
Health Violations
179
water systems
Largest Polluters
View all →| # | Facility | Total Releases |
|---|---|---|
| 1 | Darling Ingredients Inc.- Linkwood Facility | 9.1M lbs |
| 2 | Vibrantz Specialty Products LLC | 5.3M lbs |
| 3 | Aes Warrior Run Inc | 2.2M lbs |
| 4 | Perdue Agribusiness LLC - Salisbury Md | 2.1M lbs |
| 5 | Grace Davison-Curtis Bay Works | 1.5M lbs |
| 6 | Xerxes Corp | 771.6K lbs |
| 7 | Morgantown Power LLC | 731.2K lbs |
| 8 | Verso Luke LLC | 634.8K lbs |
| 9 | Brandon Shores & Wagner Complex | 560.1K lbs |
| 10 | U.S. Army Aberdeen Proving Ground | 288.9K lbs |
| 11 | U.S. Navy Naval Support Facility Indian Head | 250.5K lbs |
| 12 | Terumo Medical Corp | 217.8K lbs |
| 13 | Plymouth Tube Co | 180.6K lbs |
| 14 | Chalk Point Power LLC | 165.2K lbs |
| 15 | Engineered Polymer Solutions Inc. | 152.2K lbs |
| 16 | The Gill Corporation-Maryland | 134.0K lbs |
| 17 | Reliance Treated Wood | 129.2K lbs |
| 18 | Rust-Oleum Corp in Md | 111.2K lbs |
| 19 | Heidelberg Materials US Cement LLC | 85.7K lbs |
| 20 | Southern Galvanizing Co | 83.5K lbs |
Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| ECHO VALLEY MHP | 60 | 40 |
| TOWN OF NORTH EAST | 8,600 | 24 |
| GOLDEN KAY APARTMENTS | 148 | 21 |
| SPRINGFIELD HOSPITAL DISTRIBUTION | 1,500 | 20 |
| TOWN OF PERRYVILLE | 4,413 | 14 |
| PHELPS MOBILE HOME VILLA | 98 | 14 |
| CITY OF HAVRE DE GRACE | 14,000 | 10 |
| CITY OF POCOMOKE CITY | 4,100 | 9 |
| GLEN MEADOWS RETIREMENT COMMUNITY | 468 | 8 |
| CEDAR MOBILE HOME PARK | 300 | 8 |
| PERRY POINT V.A. MEDICAL CENTER | 2,000 | 8 |
| TOWN OF ST. MICHAELS | 2,650 | 8 |
| TOWN OF SNOW HILL | 2,409 | 8 |
| RIDGEVIEW MHP | 55 | 8 |
| IRISH CREEK MHP | 90 | 8 |
| TEBBSTON ON MAGOTHY | 52 | 7 |
| FREEDOM DISTRICT | 24,867 | 7 |
| TOWN OF BETTERTON | 481 | 6 |
| MIDLAND-LONACONING | 5,000 | 5 |
| LIBERTY MOBILE HOME PARK | 40 | 5 |
Cities with Water Issues
Waldorf
Pop: -
Indian Head
Pop: -
Newburg
Pop: -
Jessup
Pop: -
Rockville
Pop: -
Bethesda
Pop: -
Gaithersburg
Pop: -
Ellicott City
Pop: -
Finksburg
Pop: -
Havre De Grace
Pop: -
Linthicum Heights
Pop: -
Baltimore
Pop: -
Annapolis
Pop: -
Oakland
Pop: -
Cambridge
Pop: -
Chestertown
Pop: -
Federalsburg
Pop: -
Hurlock
Pop: -
Frederick
Pop: -
Hagerstown
Pop: -
Superfund Sites (26)
Counties (25 total)
| County | Facilities |
|---|---|
| Anne Arundel | 23 |
| Charles | 5 |
| Frederick | 9 |
| Baltimore | 25 |
| Cecil | 6 |
| Washington | 19 |
| St. Mary's | 2 |
| Harford | 17 |
| Wicomico | 8 |
| Baltimore (city) | 28 |
| Calvert | 1 |
| Prince George's | 17 |
| Carroll | 8 |
| Howard | 8 |
| Montgomery | 10 |
| Worcester | 1 |
| Queen Anne's | 1 |
| Garrett | 1 |
| Caroline | 3 |
| Kent | 4 |
Showing top 20 counties by environmental activity. Maryland has 25 counties total.
Largest Cities
Aquasco
Pop: -
1 facilities · 0 water systems
Waldorf
Pop: -
1 facilities · 18 water systems
Cheltenham
Pop: -
1 facilities · 0 water systems
Indian Head
Pop: -
1 facilities · 5 water systems
Newburg
Pop: -
1 facilities · 4 water systems
Patuxent River
Pop: -
1 facilities · 1 water systems
Beltsville
Pop: -
4 facilities · 0 water systems
Laurel
Pop: -
3 facilities · 1 water systems
Clinton
Pop: -
2 facilities · 0 water systems
Capitol Heights
Pop: -
1 facilities · 0 water systems
Fort George G Meade
Pop: -
4 facilities · 0 water systems
Andrews Air Force Base
Pop: -
1 facilities · 0 water systems
Upper Marlboro
Pop: -
3 facilities · 0 water systems
Hyattsville
Pop: -
2 facilities · 0 water systems
Jessup
Pop: -
8 facilities · 3 water systems
Dickerson
Pop: -
2 facilities · 0 water systems
Rockville
Pop: -
4 facilities · 1 water systems
Germantown
Pop: -
1 facilities · 0 water systems
Bethesda
Pop: -
1 facilities · 3 water systems
Gaithersburg
Pop: -
1 facilities · 8 water systems
Frequently Asked Questions
How many polluting facilities are in Maryland? ▼
Maryland has 206 facilities that report to the EPA Toxic Release Inventory (TRI). These facilities have collectively reported 25.5M 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 Maryland have Superfund sites? ▼
Yes, Maryland 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).
Is the water safe in Maryland? ▼
Maryland has 456 EPA-regulated water systems. 179 water systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental data is available for Maryland? ▼
PlainEnviro provides three categories of EPA environmental data for Maryland: Toxic Release Inventory (TRI) data covering 206 industrial facilities, Safe Drinking Water Information System (SDWIS) data for 456 water systems, and Superfund National Priorities List (NPL) data for 26 contaminated sites.
How does Maryland compare to other states environmentally? ▼
Maryland has 206 TRI facilities with 25.5M lbs in total releases, 26 Superfund sites, and 506 water system violations on record. State-level environmental comparisons depend on many factors including industrial activity, population, and geographic size. Source: EPA TRI, SDWIS, and Superfund NPL databases.
Explore More Data for Maryland
TRI Facilities in Maryland →
Every toxic-release facility reporting in the state, ranked by volume
Drinking Water Systems in Maryland →
Community water systems and their violation records
Air Quality in Maryland →
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 Maryland: 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 Maryland's data
Use this state profile as a starting point, then drill into the specific dataset that matters to you.
- Check the 206 TRI facilities reporting in Maryland for the largest reported releases near a specific county. View facilities
- 179 water systems in the state have a recorded health-based violation, check if yours is one of them. Check water systems
- See how Maryland 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.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro Editorial
According to the U.S. Environmental Protection Agency, this state profile is drawn from PlainEnviro's database of more than 25,000 EPA-tracked facilities, the Safe Drinking Water Information System, and the Superfund National Priorities List, compiled since federal reporting began under the Emergency Planning and Community Right-to-Know Act in October 1986; see our methodology for full source citations and refresh cadence.
Every figure on PlainEnviro is rendered directly from EPA environmental compliance data, no number is typed in by an editor. State environmental figures are computed directly from EPA data. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.