Is Grand Prairie, TX Tap Water Safe? Quality & Contaminants

What was found in Grand Prairie'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	6130 µg/L 61% of the EPA limit 10000 µg/L	2/3	SYR4
Nitrate-Nitrite	6130 µg/L 61% of the EPA limit 10000 µg/L	2/3	SYR4
Copper	4210 µg/L 324% of the EPA limit, in the worst sample — 1300 µg/L	3/3	SYR4
Fluoride	1100 µg/L 28% of the EPA limit 4000 µg/L	2/3	SYR4
Nitrite	210 µg/L 21% of the EPA limit 1000 µg/L	1/3	SYR4
TTHM	107 µg/L 134% of the EPA limit, in the worst sample — 80 µg/L	3/3	SYR4
Chloroform	54.5 µg/L No EPA limit set	3/3	SYR4
Lead	49.4 µg/L 329% of the EPA limit, in the worst sample — 15 µg/L	2/3	SYR4
Total Haloacetic Acids (HAA5)	49.1 µg/L 82% of the EPA limit 60 µg/L	3/3	SYR4
Bromodichloromethane	33.7 µg/L No EPA limit set	3/3	SYR4
Dichloroacetic Acid	28.3 µg/L No EPA limit set	3/3	SYR4
Dibromochloromethane	27.8 µg/L No EPA limit set	3/3	SYR4
Trichloroacetic Acid	19.6 µg/L No EPA limit set	2/3	SYR4
Bromoform	17.4 µg/L No EPA limit set	3/3	SYR4
Dibromoacetic Acid	12.6 µg/L No EPA limit set	3/3	SYR4
Lithium	12.1 µg/L No EPA limit set	1/3	UCMR-5
Monochloroacetic Acid	9.6 µg/L No EPA limit set	2/3	SYR4
Chromium	6.14 µg/L 6.1% of the EPA limit 100 µg/L	2/3	SYR4
Monobromoacetic Acid	4.2 µg/L No EPA limit set	1/3	SYR4
Selenium	1.5 µg/L 3% of the EPA limit 50 µg/L	1/3	SYR4
Combined Radium (-226 And -228)	1 pCi/L 20% of the EPA limit 5 pCi/L	2/3	SYR4
Barium	0.9100 µg/L 0% of the EPA limit 2000 µg/L	2/3	SYR4
PFOS	0.0820 µg/L No EPA limit set	1/3	UCMR-5
Pfba	0.0122 µg/L No EPA limit set	1/3	UCMR-5
Pfpea	0.0117 µg/L No EPA limit set	1/3	UCMR-5
Pfhxa	0.0115 µg/L No EPA limit set	1/3	UCMR-5
PFBS	0.0051 µg/L No EPA limit set	1/3	UCMR-5
PFOA	0.0049 µg/L No EPA limit set	1/3	UCMR-5
Lead	0.0039 mg/L 26% of the EPA limit 0.0150 mg/L	3/3	LCR
Pfhpa	0.0036 µg/L No EPA limit set	1/3	UCMR-5
PFHXS	0.0033 µg/L No EPA limit set	1/3	UCMR-5

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 Grand Prairie

Supplier	Population served
CITY OF GRAND PRAIRIE	201,843
MATTHEW ROAD WSC	279
SPRING CREEK CIRCLE WSC	51

Frequently asked questions about Grand Prairie tap water

Is Grand Prairie tap water safe to drink?

EPA testing detected 31 contaminants in the water serving Grand Prairie. 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 Grand Prairie?

3 public water suppliers report drinking-water monitoring for Grand Prairie, Texas to the EPA. Each is listed above with its population served.

What contaminants are in Grand Prairie's water?

The contaminants EPA monitoring detected in Grand Prairie include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Nitrite. 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.