Howard, MD
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.
Environmental data for Howard in Maryland · Population: 333,916
TRI sites such as Maryland & Virginia Laurel LLC; Precoat Metals; Elite Spice Inc.; SDWIS systems such as HOWARD COUNTY D.P.W. DISTRIBUTION; HOLIDAY MOBILE ESTATES, INC.; BUEL HILL ESTATES (DBA EAGLES LANDING) anchor Howard, MD's EPA extract. Derived burden score 37/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Howard include HOLIDAY MOBILE ESTATES, INC.; LUTHERAN VILLAGE AT MILLER'S GRANT; CEDAR MOBILE HOME PARK, while Maryland & Virginia Laurel LLC leads reported TRI pounds among local Form R filers. AQS median AQI 32 / peak 75 in 2024.
Burden score 37/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Howard -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Howard, MD: EPA TRI 2023 reporting year
Same facilities, both years
+25.4%
7 facilities that filed in 2022 and 2023
Whole inventory
+25.4%
15.4 thousand lb → 19.3 thousand lb, every facility that filed
Between the two reporting years, 0 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Howard, MD's total reported releases rose from 15.4 thousand lb in 2022 to 19.3 thousand lb in 2023, based on EPA TRI filings.
- Howard, MD's off-site transfers rose from 12.7 thousand lb in 2022 to 16.3 thousand lb in 2023, based on EPA TRI filings.
- Howard, MD's air releases rose from 2.7 thousand lb in 2022 to 3.0 thousand lb in 2023, based on EPA TRI filings.
- Howard, MD's chemicals reported fell from 16 in 2022 to 15 in 2023, based on EPA TRI filings.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 307 (84%) | 59 | 0 | 75 |
| 2023 | 268 (73%) | 93 | 1 | 188 |
| 2022 | 290 (79%) | 75 | 0 | 70 |
| 2021 | 284 (78%) | 81 | 0 | 83 |
| 2020 | 297 (82%) | 67 | 0 | 71 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Maryland, see the EPA's AirNow.gov.
Water Systems (15)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| HOWARD COUNTY D.P.W. DISTRIBUTION | 286,158 | 0 |
| HOLIDAY MOBILE ESTATES, INC. | 900 | 1 |
| BUEL HILL ESTATES (DBA EAGLES LANDING) | 400 | 0 |
| LUTHERAN VILLAGE AT MILLER'S GRANT | 315 | 1 |
| CEDAR MOBILE HOME PARK | 300 | 8 |
| PINE CREST MOBILE HOME PARK | 208 | 0 |
| TRIPLE J MHP | 200 | 0 |
| COUNTRY HILL PINES | 174 | 0 |
| ROCKBROOK VILLAGE MOBILE HOME PARK | 150 | 3 |
| WHITE PLAINS 1 MHP/SMITTYS | 100 | 0 |
| IRISH CREEK MHP | 90 | 7 |
| LAKEVIEW MHP LLC | 76 | 2 |
| SULLIVANS MOBILE HOME PARK COMMUNITY | 70 | 3 |
| WHITE PLAINS 2 MHP/JACK BLAIR | 70 | 0 |
| TAYLORSVILLE MHC, LLC | 38 | 0 |
TRI Facilities (9)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Maryland & Virginia Laurel LLC | 52.6K lbs |
| 2 | Precoat Metals | 8.6K lbs |
| 3 | Elite Spice Inc. | 2.6K lbs |
| 4 | Tate Access Floors Inc. | 751 lbs |
| 5 | Elite Spice Inc. | 515 lbs |
| 6 | Jessup Ready Mix Concrete | 447 lbs |
| 7 | Concrete Pipe & Precast LLC - Jessup Plant | 1 lbs |
| 8 | Schuster Concrete Ready Mix Llc-Guilford Rd | 0 lbs |
| 9 | Northrop Grumman Systems Corp. - Troy Hill 4 | 0 lbs |
Cities in Howard (3)
Frequently Asked Questions
What is the environmental risk level in Howard, Maryland? ▼
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How many toxic release facilities are in Howard? ▼
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.