Is Sully Square, VA tap water safe?
The short answer
Fairfax County Water Authority serves Sully Square. In EPA’s and CDC’s records it has 2 results above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal, and no health-based violation since 2016.
The worst: PFOA at 7.4 ppt, above EPA’s new limit, which takes effect in 2029.
Some homes in a town are on private wells or a small system of their own. The name on your water bill tells you which is yours.
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Fairfax County Water Authority’s water.
Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money
ZeroWater 10 Cup Pitcher (ZP-010)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53checked Oct. 4, 2026
Certified for: PFOA, PFOS, Lead
Aquasana Claryum Direct Connect (AQ-MF-1)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOA, PFOS, Lead
Express Water StreamLine Direct Connect System (USC001)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOA, PFOS, Lead
Water testing near Sully Square
The 3 labs Virginia certifies closest to Sully Square, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Fairfax Water
Herndon, VA · about 5 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
HP Environmental, Inc.
Herndon, VA · about 5 miles
Certified for bacteria, lead and copper, metals
Fairfax County Health Department Joanne Jorgenson Laboratory
Fairfax, VA · about 7 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Virginia Household Water Quality Program, Virginia Cooperative Extension: Drinking water clinics in about 70 counties a year, run through local Extension offices: pick up a kit, collect the sample on the set day, and drop it off locally. Each kit tests well, spring or cistern water for 28 things, including bacteria, nitrate, lead and arsenic. $70 a kit, with funding to help if you need it. Virginia Household Water Quality Program.
All 145 certified labs for VirginiaWhich ZIP codes are in Sully Square: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: DCLS, drinking water laboratories with certification detail; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Sully Square
Other towns in Fairfax County with a page of their own.
What to do next
- Read Fairfax County Water Authority’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOARanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water