Florence, 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. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Florence in South Carolina · Population: 136,921
TRI sites such as Westrock Cp LLC; Clarios LLC; Nan Ya Plastics Corp America; SDWIS systems such as FLORENCE CITY OF (SC2110001); LAKE CITY CITY OF (SC2110007); JOHNSONVILLE CITY OF (SC2110011); NPL sites such as Koppers Co., Inc. (Florence Plant) anchor Florence, SC's EPA extract. Derived burden score 48/100 (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 Florence include FLORENCE CITY OF (SC2110001), while Westrock Cp LLC leads reported TRI pounds among local Form R filers. AQS median AQI 44 / peak 99 in 2024.
Burden score 48/100 (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 Florence -- 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 Florence, SC: EPA TRI 2023 reporting year
Same facilities, both years
-16.2%
15 facilities that filed in 2022 and 2023
Whole inventory
-16.2%
1.9 million lb → 1.6 million lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Florence, SC's total reported releases fell from 1.9 million lb in 2022 to 1.6 million lb in 2023, based on EPA TRI filings.
- Florence, SC's off-site transfers fell from 434.2 thousand lb in 2022 to 308.1 thousand lb in 2023, based on EPA TRI filings.
- Florence, SC's water releases rose from 11.3 thousand lb in 2022 to 12.9 thousand lb in 2023, based on EPA TRI filings.
- Florence, SC's air releases fell from 1.2 million lb in 2022 to 1.0 million lb 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 | 230 (64%) | 129 | 0 | 99 |
| 2023 | 191 (52%) | 172 | 1 | 104 |
| 2022 | 210 (63%) | 123 | 0 | 79 |
| 2021 | 251 (74%) | 86 | 0 | 86 |
| 2020 | 290 (82%) | 62 | 0 | 95 |
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 South Carolina, see the EPA's AirNow.gov.
Water Systems (8)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| FLORENCE CITY OF (SC2110001) | 79,745 | 4 |
| LAKE CITY CITY OF (SC2110007) | 9,191 | 0 |
| JOHNSONVILLE CITY OF (SC2110011) | 5,083 | 0 |
| COWARD TOWN OF (SC2110012) | 2,283 | 0 |
| BARRINEAU WATER SYSTEM (SC1420002) | 1,879 | 0 |
| PAMPLICO TOWN OF (SC2110010) | 1,734 | 0 |
| SCRANTON TOWN OF (SC2110009) | 1,133 | 0 |
| OLANTA TOWN OF (SC2110006) | 801 | 0 |
TRI Facilities (17)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Westrock Cp LLC | 5.7M lbs |
| 2 | Clarios LLC | 3.9M lbs |
| 3 | Nan Ya Plastics Corp America | 437.9K lbs |
| 4 | International Knife & Saw Inc | 253.2K lbs |
| 5 | Nucor Corp Vulcraft Div | 243.0K lbs |
| 6 | Charles Ingram Lumber Co | 152.6K lbs |
| 7 | Patheon Api Inc. | 54.9K lbs |
| 8 | Steelfab Inc | 38.8K lbs |
| 9 | Koppers Inc. (florence Sc) | 16.3K lbs |
| 10 | Patheon Api Services Inc. | 12.5K lbs |
| 11 | American Honda Motor Co. Inc. | 4.9K lbs |
| 12 | Clarios LLC Florence Dc | 3.3K lbs |
| 13 | Ge Healthcare | 599 lbs |
| 14 | Concrete Supply Co - Florence | 5 lbs |
| 15 | Plant 84 - Florence | 0 lbs |
| 16 | Concrete Supply Co LLC - Envision Temp Plant | 0 lbs |
| 17 | McCall Farms | 0 lbs |
Superfund Sites (1)
| Site Name | Status | HRS Score |
|---|---|---|
| Koppers Co., Inc. (Florence Plant) | Deleted NPL Site | 51.27 |
Cities in Florence (9)
Frequently Asked Questions
What is the environmental risk level in Florence, South Carolina? ▼
Are there Superfund sites in Florence? ▼
How many toxic release facilities are in Florence? ▼
What is the air quality in Florence? ▼
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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.