Town of Herndon

Public water system · Virginia · serves 24,601 people · source: Fairfax Water wholesale · PWS ID VA6059550

High Risk

13 contaminants above health guidelines

At 310× the EWG health guideline, one glass of this tap water carries what 310 glasses should.

What’s in the water

× = times the EWG health guideline

Haloacetic acids (HAA9)Cancer

×310

Total trihalomethanes (TTHMs)Cancer

×131

Haloacetic acids (HAA5)Cancer

×128

BromodichloromethaneCancer

×80

Trichloroacetic acidCancer

×51

Also above the guideline (8 more): Dichloroacetic acid ×32 · Chloroform ×30 · Dibromochloromethane ×28 · Dibromoacetic acid ×23 · Chromium (hexavalent) ×8.4 · Nitrate and nitrite ×8 · Perfluorooctanoic acid (PFOA) ×4.6 · 6:2 Fluorotelomer Sulfonic Acid (6:2 FTSA) ×3.2

What actually fixes it

your free test confirms the right fit

Carbon / pitcher filter

Cuts chlorine taste & some byproducts. A good first step — misses nitrate, chromium-6 & PFAS.

Reverse Osmosis (RO)

Under-sink drinking-water system — removes the widest range: byproducts, nitrate, chromium-6 & PFAS.

Whole-home + RO

Softener / carbon for every tap, plus RO at the kitchen for what whole-home can’t catch.

$0 · No obligation

See what’s really in your home’s water

Scan the code to schedule a free in-home water test with a licensed local technician — tap, pressure, hardness & a plain-English plan.

Or call (703) 997-9757

Scan to schedule

Report prepared by SwiftPro Heating, Cooling & Plumbing · VA Class A Contractor License #2705192276 · Fully insured · 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151 · (703) 997-9757 · [email protected]
Water data via the EWG Tap Water Database (June 2026); this report is not affiliated with EWG. Levels are the latest reported system-wide averages and vary by home and season — an in-home test measures your actual tap. Full lab-style detail at https://myfreewaterreport.com/water/herndon-town.