Dorchester, SC
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 Dorchester in South Carolina · Population: 164,322
TRI sites such as Sportsman Boat Manufacturing Inc.; Scout Boats Inc; Key West Boats Inc. Plant 1 (ridgeville); SDWIS systems such as DCWA KNIGHTSVILLE (SC1820001); DCWS ASHLEY PHOSPHATE (SC1820008); ST GEORGE TOWN OF (SC1810001) anchor Dorchester, SC's EPA extract. Derived burden score 40/100 (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 Dorchester include DCWS I-95 (SC1870914); SANDY RUN MHP (SC0860037), while Sportsman Boat Manufacturing Inc. leads reported TRI pounds among local Form R filers. No AQS county monitors report here.
Burden score 40/100 (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 Dorchester -- 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 Dorchester, SC: EPA TRI 2023 reporting year
Same facilities, both years
+1.4%
14 facilities that filed in 2022 and 2023
Whole inventory
+1.4%
497.5 thousand lb → 504.3 thousand lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Dorchester, SC's total reported releases rose from 497.5 thousand lb in 2022 to 504.3 thousand lb in 2023, based on EPA TRI filings.
- Dorchester, SC's off-site transfers fell from 7.3 thousand lb in 2022 to 2.7 thousand lb in 2023, based on EPA TRI filings.
- Dorchester, SC's air releases rose from 490.2 thousand lb in 2022 to 501.6 thousand lb in 2023, based on EPA TRI filings.
Water Systems (20)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| DCWA KNIGHTSVILLE (SC1820001) | 40,141 | 0 |
| DCWS ASHLEY PHOSPHATE (SC1820008) | 26,536 | 0 |
| ST GEORGE TOWN OF (SC1810001) | 2,300 | 0 |
| LINCOLNVILLE TOWN OF (SC1010007) | 1,980 | 0 |
| DCWS/CLAY FIELD DRIVE (SC1850014) | 1,648 | 0 |
| DCWS SOUTHERN PALMS (SC1850011) | 1,494 | 0 |
| RIDGEVILLE INDUSTRIAL CAMPUS (SC1830031) | 999 | 0 |
| HARLEYVILLE TOWN OF (SC1810002) | 946 | 0 |
| DCWS EDISTO TRIBAL COUNCIL (1850010) | 925 | 0 |
| HOMECOMING SUBDIVISION (SC1850016) | 883 | 0 |
| DCWA TRANQUIL ACRES (SC1820003) | 858 | 0 |
| RIDGEVILLE TOWN OF (SC1810004) | 821 | 0 |
| DCWS REEVESVILLE (SC1820002) | 300 | 0 |
| DCWA CALOMET VALLEY (1850009) | 275 | 0 |
| HERON'S WALK PHASE 1 (SC1850017) | 231 | 0 |
| DCWS HIGHWAY 17A (SC1820009) | 200 | 0 |
| DCWS CALEB COURT (SC1850015) | 156 | 0 |
| DCWS CONOFLOW (SC1820007) | 150 | 0 |
| DCWS I-95 (SC1870914) | 102 | 8 |
| SANDY RUN MHP (SC0860037) | 41 | 39 |
TRI Facilities (16)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Sportsman Boat Manufacturing Inc. | 771.2K lbs |
| 2 | Scout Boats Inc | 656.8K lbs |
| 3 | Key West Boats Inc. Plant 1 (ridgeville) | 555.8K lbs |
| 4 | Key West Boats Inc. Plant 2 (summerville) | 237.3K lbs |
| 5 | Cutting Edge Composites | 123.6K lbs |
| 6 | Resonac Graphite America Inc | 68.1K lbs |
| 7 | Argos Cement Harleyville Plant | 63.0K lbs |
| 8 | Giant Cement Co | 53.3K lbs |
| 9 | Briteline Extrusions Inc | 6.3K lbs |
| 10 | Avoca LLC | 3.0K lbs |
| 11 | Robert Bosch LLC | 2.6K lbs |
| 12 | James Hardie Building Products Summerville | 617 lbs |
| 13 | Interfor Summerville | 53 lbs |
| 14 | Knight Redi-Mix Inc. - Plant 4 | 0 lbs |
| 15 | Everris Na Inc. Summerville Site | 0 lbs |
| 16 | Dawkins On-Site. LLC - Walmart Portable | 0 lbs |
Cities in Dorchester (5)
Frequently Asked Questions
What is the environmental risk level in Dorchester, South Carolina? ▼
Are there Superfund sites in Dorchester? ▼
How many toxic release facilities are in Dorchester? ▼
What is the air quality in Dorchester? ▼
Is the drinking water safe in Dorchester? ▼
What environmental agencies cover Dorchester? ▼
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.