Is Smithfield, NC Tap Water Safe? Quality & Contaminants

What was found in Smithfield's water

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

Contaminant	Level vs EPA limit	Suppliers	Source
Copper	2193 µg/L 169% of the EPA limit, in the worst sample — 1300 µg/L	3/3	SYR4
Fluoride	900 µg/L 23% of the EPA limit 4000 µg/L	2/3	SYR4
Chlorite	830 µg/L 83% of the EPA limit 1000 µg/L	1/3	SYR4
TTHM	132.1 µg/L 165% of the EPA limit, in the worst sample — 80 µg/L	3/3	SYR4
Chloroform	97.4 µg/L No EPA limit set	3/3	SYR4
Total Haloacetic Acids (HAA5)	76 µg/L 127% of the EPA limit, in the worst sample — 60 µg/L	3/3	SYR4
Dichloroacetic Acid	43.8 µg/L No EPA limit set	3/3	SYR4
Dibromoacetic Acid	31 µg/L No EPA limit set	3/3	SYR4
Trichloroacetic Acid	31 µg/L No EPA limit set	3/3	SYR4
Bromodichloromethane	28 µg/L No EPA limit set	3/3	SYR4
Lead	26 µg/L 173% of the EPA limit, in the worst sample — 15 µg/L	3/3	SYR4
Dibromochloromethane	13 µg/L No EPA limit set	3/3	SYR4
Monobromoacetic Acid	11 µg/L No EPA limit set	1/3	SYR4
Monochloroacetic Acid	7.5 µg/L No EPA limit set	3/3	SYR4
Simazine	2.4 µg/L 60% of the EPA limit 4 µg/L	2/3	SYR4
Bromoform	2 µg/L No EPA limit set	2/3	SYR4
Xylenes, Total	0.7000 µg/L 0% of the EPA limit 10000 µg/L	1/3	SYR4
Atrazine	0.1600 µg/L 5.3% of the EPA limit 3 µg/L	2/3	SYR4
Pfba	0.0144 µg/L No EPA limit set	2/3	UCMR-5
PFOS	0.0097 µg/L No EPA limit set	2/3	UCMR-5
Pfhxa	0.0082 µg/L No EPA limit set	2/3	UCMR-5
Pfpea	0.0078 µg/L No EPA limit set	2/3	UCMR-5
PFOA	0.0077 µg/L No EPA limit set	2/3	UCMR-5
PFBS	0.0055 µg/L No EPA limit set	2/3	UCMR-5
PFHXS	0.0038 µg/L No EPA limit set	1/3	UCMR-5
Pfhpa	0.0033 µg/L No EPA limit set	1/3	UCMR-5
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	3/3	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 Smithfield

Supplier	Population served
JOHNSTON CO-EAST	25,212
SMITHFIELD, TOWN OF	12,900
SMITHFIELD SOUTH WATER DIST	803

Frequently asked questions about Smithfield tap water

Is Smithfield tap water safe to drink?

EPA testing detected 27 contaminants in the water serving Smithfield. 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 Smithfield?

3 public water suppliers report drinking-water monitoring for Smithfield, North Carolina to the EPA. Each is listed above with its population served.

What contaminants are in Smithfield's water?

The contaminants EPA monitoring detected in Smithfield include Copper, Fluoride, Chlorite, TTHM, Chloroform. 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.