Is St George City, UT Tap Water Safe? Quality & Contaminants

What was found in St George City'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
Nitrate-Nitrite	6900 µg/L 69% of the EPA limit 10000 µg/L	1/1	SYR4
Fluoride	2300 µg/L 57% of the EPA limit 4000 µg/L	1/1	SYR4
Nitrate	1000 µg/L 10% of the EPA limit 10000 µg/L	1/1	SYR4
Barium	280 µg/L 14% of the EPA limit 2000 µg/L	1/1	SYR4
Copper	260 µg/L 20% of the EPA limit 1300 µg/L	1/1	SYR4
Lithium	180 µg/L No EPA limit set	1/1	UCMR-5
TTHM	74.8 µg/L 94% of the EPA limit 80 µg/L	1/1	SYR4
Arsenic	36 µg/L 360% of the EPA limit, in the worst sample — 10 µg/L	1/1	SYR4
Total Haloacetic Acids (HAA5)	31.1 µg/L 52% of the EPA limit 60 µg/L	1/1	SYR4
Lead	14 µg/L 93% of the EPA limit 15 µg/L	1/1	SYR4
Cyanide	8.7 µg/L 4.4% of the EPA limit 200 µg/L	1/1	SYR4
Gross Alpha, Excl. Radon And U	7.6 pCi/L 51% of the EPA limit 15 pCi/L	1/1	SYR4
Bromodichloromethane	6.8 µg/L No EPA limit set	1/1	SYR4
Dibromochloromethane	6.3 µg/L No EPA limit set	1/1	SYR4
Chloroform	6 µg/L No EPA limit set	1/1	SYR4
Combined Uranium	5.8 µg/L 19% of the EPA limit 30 µg/L	1/1	SYR4
Bromoform	5.6 µg/L No EPA limit set	1/1	SYR4
Gross Beta Particle Activity	5.2 pCi/L No EPA limit set	1/1	SYR4
Chromium	3.8 µg/L 3.8% of the EPA limit 100 µg/L	1/1	SYR4
Combined Radium (-226 And -228)	3.7 pCi/L 74% of the EPA limit 5 pCi/L	1/1	SYR4
Antimony, Total	1.2 µg/L 20% of the EPA limit 6 µg/L	1/1	SYR4
Selenium	0.8700 µg/L 1.7% of the EPA limit 50 µg/L	1/1	SYR4
Thallium, Total	0.5400 µg/L 27% of the EPA limit 2 µg/L	1/1	SYR4
Chlorobenzene	0.5000 µg/L 0.5% of the EPA limit 100 µg/L	1/1	SYR4
Bhc-Gamma	0.0130 µg/L 6.5% of the EPA limit 0.2000 µg/L	1/1	SYR4
Lead	0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L	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 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 St George City

Supplier	Population served
ST GEORGE CITY WATER SYSTEM	105,240

Frequently asked questions about St George City tap water

Is St George City tap water safe to drink?

EPA testing detected 26 contaminants in the water serving St George City. 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 St George City?

1 public water supplier report drinking-water monitoring for St George City, Utah to the EPA. Each is listed above with its population served.

What contaminants are in St George City's water?

The contaminants EPA monitoring detected in St George City include Nitrate-Nitrite, Fluoride, Nitrate, Barium, Copper. 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.