Local water facts
58 utilities across Virginia, Washington DC, and the Maryland DC metro — each page shows what the utility’s own published tests found above health guidelines (June 2026 EWG Tap Water Database data). Fastest path: type your ZIP on the free report page.
2 million people served · top flag 473× over guideline
437,994 people served · top flag 705× over guideline
407,300 people served · top flag 2,688× over guideline
350,000 people served · top flag 510× over guideline
338,006 people served · top flag 472× over guideline
320,000 people served · top flag 552× over guideline
292,000 people served · top flag 333× over guideline
240,000 people served · top flag 613× over guideline
234,220 people served · top flag 538× over guideline
229,395 people served · top flag 475× over guideline
182,700 people served · top flag 538× over guideline
165,240 people served · top flag 351× over guideline
156,000 people served · top flag 595× over guideline
136,409 people served · top flag 402× over guideline
123,684 people served · top flag 625× over guideline
97,915 people served · top flag 592× over guideline
94,588 people served · top flag 524× over guideline
80,995 people served · top flag 469× over guideline
72,062 people served · top flag 314× over guideline
71,078 people served · top flag 289× over guideline
69,822 people served · top flag 564× over guideline
57,931 people served · top flag 547× over guideline
57,726 people served · top flag 146× over guideline
53,727 people served · top flag 674× over guideline
53,016 people served · top flag 509× over guideline
48,019 people served · top flag 351× over guideline
47,574 people served · top flag 674× over guideline
46,206 people served · top flag 475× over guideline
43,055 people served · top flag 618× over guideline
42,500 people served · top flag 587× over guideline
34,578 people served · top flag 596× over guideline
32,326 people served · top flag 666× over guideline
32,000 people served · top flag 375× over guideline
30,133 people served · top flag 313× over guideline
30,000 people served · top flag 464× over guideline
29,721 people served · top flag 835× over guideline
28,350 people served · top flag 259× over guideline
28,248 people served · top flag 467× over guideline
25,643 people served · top flag 482× over guideline
25,248 people served · top flag 93× over guideline
24,601 people served · top flag 310× over guideline
24,400 people served · top flag 287× over guideline
22,630 people served · top flag 15× over guideline
22,000 people served · top flag 614× over guideline
21,761 people served · top flag 449× over guideline
21,184 people served · top flag 412× over guideline
14,600 people served · top flag 473× over guideline
632,323 people served · top flag 707× over guideline
1.9 million people served · top flag 841× over guideline
250,000 people served · top flag 453× over guideline
91,260 people served · top flag 242× over guideline
54,000 people served · top flag 692× over guideline
52,000 people served · top flag 443× over guideline
43,030 people served · top flag 1,174× over guideline
35,000 people served · top flag 46× over guideline
25,000 people served · top flag 32× over guideline
23,179 people served · top flag 34× over guideline
4,371 people served · top flag 1,746× over guideline