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Tap water quality report

Darlington, SC

EPA monitoring detected 21 contaminants across the 2 water suppliers serving Darlington. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
59,430
people served
21
contaminants found
South Carolina rankings Lead in South Carolina PFAS in South Carolina

What was found in Darlington's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1200 µg/L 30%
of the EPA limit 4000 µg/L
 2/2 SYR4
Nitrate
1200 µg/L 12%
of the EPA limit 10000 µg/L
 1/2 SYR4
Copper
370 µg/L 28%
of the EPA limit 1300 µg/L
 2/2 SYR4
Nitrate-Nitrite
200 µg/L 2%
of the EPA limit 10000 µg/L
 1/2 SYR4
Dichloroacetic Acid
29.82 µg/L
No EPA limit set
 1/2 SYR4
Total Haloacetic Acids (HAA5)
29.82 µg/L 50%
of the EPA limit 60 µg/L
 2/2 SYR4
Lithium
25.6 µg/L
No EPA limit set
 1/2 UCMR-5
Lead
8.1 µg/L 54%
of the EPA limit 15 µg/L
 2/2 SYR4
Combined Radium (-226 And -228)
5.4 pCi/L 108%
of the EPA limit, in the worst sample — 5 pCi/L
 2/2 SYR4
Gross Alpha, Excl. Radon And U
5 pCi/L 33%
of the EPA limit 15 pCi/L
 1/2 SYR4
TTHM
2.78 µg/L 3.5%
of the EPA limit 80 µg/L
 1/2 SYR4
Chloroform
2.51 µg/L
No EPA limit set
 1/2 SYR4
Bromodichloromethane
1.53 µg/L
No EPA limit set
 1/2 SYR4
Trichloroacetic Acid
1.43 µg/L
No EPA limit set
 1/2 SYR4
Dibromoacetic Acid
1.39 µg/L
No EPA limit set
 2/2 SYR4
Monobromoacetic Acid
1.3798 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
1.25 µg/L
No EPA limit set
 1/2 SYR4
Thallium, Total
0.6700 µg/L 34%
of the EPA limit 2 µg/L
 1/2 SYR4
1,2-DIBROMO-3-CHLOROPROPANE
0.0360 µg/L 18%
of the EPA limit 0.2000 µg/L
 1/2 SYR4
Ethylene Dibromide
0.0220 µg/L 44%
of the EPA limit 0.0500 µg/L
 1/2 SYR4
Lead
0.0016 mg/L 11%
of the EPA limit 0.0150 mg/L
 2/2 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 single worst sample on record — 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 Darlington

SupplierPopulation served
DARLINGTON COUNTY W&SA (SC1620001) 52,288
DARLINGTON CITY OF (SC1610001) 7,142

Frequently asked questions about Darlington tap water

Is Darlington tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Darlington. 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 Darlington?

2 public water suppliers report drinking-water monitoring for Darlington, South Carolina to the EPA. Each is listed above with its population served.

What contaminants are in Darlington's water?

The contaminants EPA monitoring detected in Darlington include Fluoride, Nitrate, Copper, Nitrate-Nitrite, Dichloroacetic Acid. The full list, with the highest level found 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.