Water quality by county
in Virginia
EPA sampled public water systems across Virginia for PFAS under its UCMR 5 programme. Of the 133 counties, 6 have a reading above a federal limit and 67 have not been sampled at all — which is not a clean result, only an absence of one. Each county below shows what was found, at what concentration, and at which utility.
| county | Population | Worst result | Compound |
|---|---|---|---|
| Fauquier County | 75,865 | 11× | PFOA · 44.6 ng/L |
| Nelson County | 14,766 | 3.3× | PFOS · 13 ng/L |
| Loudoun County | 443,380 | 2.7× | PFOA · 10.8 ng/L |
| Prince William County | 497,003 | 2.0× | PFOA · 7.9 ng/L |
| Fairfax County | 26,340 | 1.9× | PFOA · 7.7 ng/L |
| Stafford County | 168,919 | 1.4× | PFOS · 5.7 ng/L |
| Campbell County | 55,342 | under the limit | HFPO-DA · 6.2 ng/L |
| Caroline County | 33,477 | under the limit | PFHxS · 3.2 ng/L |
| Accomack County | 33,411 | under the limit | — |
| Albemarle County | 117,313 | under the limit | — |
| Alexandria City | 159,102 | not sampled | — |
| Alleghany County | 14,632 | under the limit | — |
| Amelia County | 13,716 | not sampled | — |
| Amherst County | 31,650 | under the limit | — |
| Appomattox County | 16,957 | not sampled | — |
| Arlington County | 239,807 | under the limit | — |
| Augusta County | 78,622 | under the limit | — |
| Bath County | 4,071 | not sampled | — |
| Bedford County | 82,182 | under the limit | — |
| Bland County | 6,186 | not sampled | — |
| Botetourt County | 34,129 | not sampled | — |
| Bristol City | 16,316 | not sampled | — |
| Brunswick County | 15,750 | under the limit | — |
| Buchanan County | 18,632 | under the limit | — |
| Buckingham County | 17,115 | under the limit | — |
| Buena Vista City | 6,581 | not sampled | — |
| Carroll County | 29,242 | under the limit | — |
| Charles City County | 6,564 | not sampled | — |
| Charlotte County | 11,258 | not sampled | — |
| Charlottesville City | 44,767 | not sampled | — |
| Chesapeake City | 254,997 | not sampled | — |
| Chesterfield County | 389,793 | under the limit | — |
| Clarke County | 15,598 | under the limit | — |
| Colonial Heights City | 18,674 | not sampled | — |
| Covington City | 5,663 | not sampled | — |
| Craig County | 4,829 | not sampled | — |
| Culpeper County | 56,125 | under the limit | — |
| Cumberland County | 10,062 | not sampled | — |
| Danville City | 41,993 | not sampled | — |
| Dickenson County | 13,411 | under the limit | — |
| Dinwiddie County | 28,576 | under the limit | — |
| Emporia City | 5,402 | not sampled | — |
| Essex County | 10,683 | not sampled | — |
| Fairfax City | 26,340 | not sampled | — |
| Falls Church City | 15,034 | not sampled | — |
| Floyd County | 15,658 | not sampled | — |
| Fluvanna County | 28,746 | under the limit | — |
| Franklin County | 8,373 | under the limit | — |
| Franklin City | 8,373 | not sampled | — |
| Frederick County | 98,109 | under the limit | — |
| Fredericksburg City | 29,992 | not sampled | — |
| Galax City | 6,739 | not sampled | — |
| Giles County | 16,533 | under the limit | — |
| Gloucester County | 40,154 | under the limit | — |
| Goochland County | 28,223 | under the limit | — |
| Grayson County | 15,265 | not sampled | — |
| Greene County | 21,744 | under the limit | — |
| Greensville County | 11,150 | under the limit | — |
| Halifax County | 33,448 | under the limit | — |
| Hampton City | 137,596 | not sampled | — |
| Hanover County | 115,309 | under the limit | — |
| Harrisonburg City | 51,164 | not sampled | — |
| Henrico County | 338,696 | under the limit | — |
| Henry County | 49,385 | under the limit | — |
| Highland County | 2,348 | not sampled | — |
| Hopewell City | 22,970 | not sampled | — |
| Isle of Wight County | 40,942 | under the limit | — |
| James City County | 82,797 | under the limit | — |
| King and Queen County | 6,747 | not sampled | — |
| King George County | 28,816 | under the limit | — |
| King William County | 19,232 | under the limit | — |
| Lancaster County | 11,062 | not sampled | — |
| Lee County | 21,780 | under the limit | — |
| Lexington City | 7,802 | not sampled | — |
| Louisa County | 42,109 | under the limit | — |
| Lunenburg County | 12,060 | not sampled | — |
| Lynchburg City | 80,301 | not sampled | — |
| Madison County | 14,252 | under the limit | — |
| Manassas City | 43,616 | not sampled | — |
| Manassas Park City | 16,611 | not sampled | — |
| Martinsville City | 13,834 | not sampled | — |
| Mathews County | 8,602 | under the limit | — |
| Mecklenburg County | 30,824 | under the limit | — |
| Middlesex County | 10,949 | not sampled | — |
| Montgomery County | 98,998 | under the limit | — |
| New Kent County | 27,218 | not sampled | — |
| Newport News City | 183,056 | not sampled | — |
| Norfolk City | 231,105 | not sampled | — |
| Northampton County | 12,004 | not sampled | — |
| Northumberland County | 12,397 | not sampled | — |
| Norton City | 3,478 | not sampled | — |
| Nottoway County | 15,632 | under the limit | — |
| Orange County | 38,986 | under the limit | — |
| Page County | 23,686 | under the limit | — |
| Patrick County | 17,308 | not sampled | — |
| Petersburg City | 34,058 | not sampled | — |
| Pittsylvania County | 59,410 | under the limit | — |
| Poquoson City | 12,854 | not sampled | — |
| Portsmouth City | 96,482 | not sampled | — |
| Powhatan County | 32,392 | not sampled | — |
| Prince Edward County | 22,276 | under the limit | — |
| Prince George County | 43,589 | under the limit | — |
| Pulaski County | 33,579 | under the limit | — |
| Radford City | 17,273 | not sampled | — |
| Rappahannock County | 7,479 | not sampled | — |
| Richmond County | 233,655 | not sampled | — |
| Richmond City | 233,655 | not sampled | — |
| Roanoke County | 97,912 | not sampled | — |
| Roanoke City | 97,912 | not sampled | — |
| Rockbridge County | 22,368 | not sampled | — |
| Rockingham County | 87,674 | under the limit | — |
| Russell County | 25,420 | under the limit | — |
| Salem City | 25,908 | not sampled | — |
| Scott County | 21,388 | under the limit | — |
| Shenandoah County | 45,441 | under the limit | — |
| Smyth County | 29,137 | under the limit | — |
| Southampton County | 17,941 | under the limit | — |
| Spotsylvania County | 152,021 | under the limit | — |
| Staunton City | 26,361 | not sampled | — |
| Suffolk City | 103,105 | not sampled | — |
| Surry County | 6,579 | not sampled | — |
| Sussex County | 10,753 | not sampled | — |
| Tazewell County | 38,875 | under the limit | — |
| Virginia Beach City | 454,808 | not sampled | — |
| Warren County | 42,461 | under the limit | — |
| Washington County | 54,098 | under the limit | — |
| Waynesboro City | 23,498 | not sampled | — |
| Westmoreland County | 19,235 | under the limit | — |
| Williamsburg City | 16,030 | not sampled | — |
| Winchester City | 27,800 | not sampled | — |
| Wise County | 34,973 | under the limit | — |
| Wythe County | 28,100 | under the limit | — |
| York County | 71,410 | not sampled | — |