Is Dale City Tap Water Safe? Quality Report

Water source: SWP
Ownership: Private
Counties served: Prince William

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
Pfba	0.0188 µg/L	4/4	2024
PFBS	0.0085 µg/L	4/4	2024
Pfhxa	0.0180 µg/L	4/4	2024
Pfpea	0.0219 µg/L	4/4	2024
Pfhpa	0.0061 µg/L	3/4	2024
PFOA	0.0071 µg/L	3/4	2024
PFOS	0.0057 µg/L	2/4	2024

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
TTHM	65.01 µg/L 81% of the EPA limit 80 µg/L worst single sample: 96.8 µg/L	252/252	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	48.26 µg/L 80% of the EPA limit 60 µg/L worst single sample: 88.6 µg/L	247/252	SYR4	2012–2019
Bromodichloromethane	9.465 µg/L No EPA limit set worst single sample: 13.7 µg/L	208/208	SYR4	2013–2019
Chloroform	50.01 µg/L No EPA limit set worst single sample: 84.2 µg/L	208/208	SYR4	2013–2019
Dibromochloromethane	4.065 µg/L No EPA limit set worst single sample: 6.2 µg/L	208/208	SYR4	2013–2019
Dichloroacetic Acid	23.37 µg/L No EPA limit set worst single sample: 48.8 µg/L	203/207	SYR4	2013–2019
Trichloroacetic Acid	19.7 µg/L No EPA limit set worst single sample: 30.5 µg/L	194/207	SYR4	2013–2019
Copper	163.4 µg/L 13% of the EPA limit 1300 µg/L worst single sample: 186 µg/L	85/91	SYR4	2013–2019
Monobromoacetic Acid	3.5 µg/L No EPA limit set worst single sample: 4.1 µg/L	82/179	SYR4	2013–2019
Dibromoacetic Acid	1.6 µg/L No EPA limit set worst single sample: 1.8 µg/L	55/153	SYR4	2014–2019
Monochloroacetic Acid	5.7 µg/L No EPA limit set worst single sample: 6.9 µg/L	36/169	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	21/21	LCR	2025
Bromoform	0.6000 µg/L No EPA limit set	14/153	SYR4	2013–2019
Lead	4.45 µg/L 30% of the EPA limit 15 µg/L worst single sample: 5 µg/L	12/91	SYR4	2013–2019

23 contaminants tested, none detected

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Utility contact

Contact: RYAN, KELLY
Phone: 804-446-9822
Email: [email protected]

Frequently asked questions about Dale City

Is Dale City tap water safe to drink?

EPA monitoring detected 21 contaminants in Dale City's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Dale City's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Dale City serve?

Dale City reports serving 72,062 people in Virginia, per its EPA record.

Has Dale City had any water quality violations?

The EPA has no formal drinking-water violations on file for Dale City.

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.