What was found in Florence's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 990 µg/L 9.9% of the EPA limit 10000 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Fluoride | 818 µg/L 20% of the EPA limit 4000 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Copper | 484.5 µg/L 37% of the EPA limit 1300 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2018 | 1/1 | SYR4 |
| Barium | 80.75 µg/L 4% of the EPA limit 2000 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| TTHM | 73.3 µg/L 92% of the EPA limit 80 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 56 µg/L 0.6% of the EPA limit 10000 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2017 | 1/1 | SYR4 |
| Chloroform | 52.424 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 30.1635 µg/L 50% of the EPA limit 60 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Lithium | 22.6 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2025 | 1/1 | UCMR-5 |
| Bromodichloromethane | 20.741 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 17.78 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 13.715 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 11.7295 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Lead | 9.8 µg/L 65% of the EPA limit 15 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2018 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 6.82 pCi/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2018 | 1/1 | SYR4 |
| Bromoform | 5.959 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.016 pCi/L 33% of the EPA limit 15 pCi/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2018 | 1/1 | SYR4 |
| Monobromoacetic Acid | 3.93 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 3.176 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.442 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 2.295 pCi/L 46% of the EPA limit 5 pCi/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2018 | 1/1 | SYR4 |
| Atrazine | 1.486 µg/L 50% of the EPA limit 3 µg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0067 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0055 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0038 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0038 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2025 | 1/1 | UCMR-5 |
| PFBS | 0.0037 µg/L No EPA limit set Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L Main supplier: FLORENCE CITY OF (SC2110001) · 79,745 people · 2024 | 1/1 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Florence
| Supplier | Population served |
|---|---|
| FLORENCE CITY OF (SC2110001) | 79,745 |
Frequently asked questions about Florence tap water
Is Florence tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Florence. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Florence?
1 public water supplier report drinking-water monitoring for Florence, South Carolina to the EPA. Each is listed above with its population served.
What contaminants are in Florence's water?
The contaminants EPA monitoring detected in Florence include Nitrate, Fluoride, Copper, Barium, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.