Calvert, 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 Calvert in Maryland · Population: 93,791
TRI sites such as Smo Barstow Plant; SDWIS systems such as CHESAPEAKE RANCH ESTATES; TOWN OF CHESAPEAKE BEACH; PRINCE FREDERICK anchor Calvert, MD's EPA extract. Derived burden score 15/100 (Low 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 Calvert include THE CALVERTON SCHOOL; FOX RUN CONDOMINIUMS, INC.; B&L MOBILE HOME PARK, while Smo Barstow Plant leads reported TRI pounds among local Form R filers. AQS median AQI 41 / peak 108 in 2024.
Burden score 15/100 (Low 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 Calvert -- 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.
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 | 203 (86%) | 33 | 1 | 108 |
| 2023 | 206 (87%) | 31 | 1 | 101 |
| 2022 | 225 (94%) | 14 | 0 | 74 |
| 2021 | 205 (92%) | 17 | 1 | 105 |
| 2020 | 235 (99%) | 3 | 0 | 67 |
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 (30)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| CHESAPEAKE RANCH ESTATES | 9,500 | 0 |
| TOWN OF CHESAPEAKE BEACH | 5,000 | 0 |
| PRINCE FREDERICK | 4,371 | 0 |
| THE PROVINCES | 3,991 | 0 |
| SOLOMONS | 3,811 | 0 |
| BEL AIR - PINTO DISTRIBUTION SYSTEM | 2,614 | 0 |
| GREENRIDGE SUBDIVISION | 2,271 | 0 |
| BEACHES WATER CO-OPERATIVE | 2,000 | 0 |
| SCIENTISTS CLIFFS | 1,425 | 0 |
| CHESAPEAKE HEIGHTS (BAYSIDE FOREST) | 1,190 | 0 |
| SUMMIT/HIGHLANDS | 1,108 | 0 |
| THE CALVERTON SCHOOL | 461 | 3 |
| CROSS POINT SUBDIVISION | 434 | 0 |
| CAVALIER COUNTRY | 381 | 0 |
| SHORES OF CALVERT | 361 | 0 |
| ST. LEONARD | 350 | 0 |
| KENWOOD BEACH | 338 | 0 |
| MARLEY RUN | 290 | 0 |
| PARIS OAKS / DAYS END | 251 | 0 |
| LAKESIDE VISTA | 219 | 0 |
| LAKEWOOD | 203 | 0 |
| WALNUT CREEK | 158 | 0 |
| HUNTING HILLS | 124 | 0 |
| COOK'S TRAILER COURT (AKA GARRETT TP) | 120 | 0 |
| HIGHLAND ESTATES DISTRIBUTION SYSTEM | 105 | 0 |
| FOX RUN CONDOMINIUMS, INC. | 85 | 1 |
| WHITE SANDS | 82 | 0 |
| B&L MOBILE HOME PARK | 65 | 1 |
| PINE TRAILER PARK | 65 | 1 |
| TAPESTRY NORTH | 60 | 0 |
TRI Facilities (1)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Smo Barstow Plant | 0 lbs |
Cities in Calvert (8)
Frequently Asked Questions
What is the environmental risk level in Calvert, Maryland? ▼
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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.