Is Pwcsa - West Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
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
Pfhxa	0.0036 µg/L	1/8	2024
Pfpea	0.0050 µg/L	1/8	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
Total Haloacetic Acids (HAA5)	42.855 µg/L 71% of the EPA limit 60 µg/L worst single sample: 76.4 µg/L	318/318	SYR4	2012–2019
Bromodichloromethane	8.92 µg/L No EPA limit set worst single sample: 54 µg/L	317/318	SYR4	2012–2019
Chloroform	37.48 µg/L No EPA limit set worst single sample: 53.3 µg/L	317/318	SYR4	2012–2019
TTHM	45.72 µg/L 57% of the EPA limit 80 µg/L worst single sample: 64.2 µg/L	317/318	SYR4	2012–2019
Dichloroacetic Acid	20.8 µg/L No EPA limit set worst single sample: 28.8 µg/L	309/310	SYR4	2012–2019
Trichloroacetic Acid	18.435 µg/L No EPA limit set worst single sample: 26.5 µg/L	294/310	SYR4	2012–2019
Dibromochloromethane	5.34 µg/L No EPA limit set worst single sample: 6.9 µg/L	213/318	SYR4	2012–2019
Dibromoacetic Acid	2.139 µg/L No EPA limit set worst single sample: 3.08 µg/L	119/310	SYR4	2012–2019
Monochloroacetic Acid	3.42 µg/L No EPA limit set worst single sample: 4.2 µg/L	39/310	SYR4	2012–2019
Copper	456.25 µg/L 35% of the EPA limit 1300 µg/L worst single sample: 678 µg/L	28/105	SYR4	2014–2017
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	22/22	LCR	2023
Bromoform	1.73 µg/L No EPA limit set worst single sample: 1.8 µg/L	8/318	SYR4	2012–2019
Lead	17.317 µg/L 115% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 19 µg/L	4/105	SYR4	2014–2017

29 contaminants tested, none detected

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Utility contact

Contact: DEROSA, JOHN
Phone: 703-335-7976
Email: [email protected]

Frequently asked questions about Pwcsa - West

Is Pwcsa - West tap water safe to drink?

EPA monitoring detected 15 contaminants in Pwcsa - West'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 Pwcsa - West's water?

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

How many people does Pwcsa - West serve?

Pwcsa - West reports serving 136,409 people in Virginia, per its EPA record.

Has Pwcsa - West had any water quality violations?

The EPA has no formal drinking-water violations on file for Pwcsa - West.

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.