PFAS Detections in District of Columbia ZIP Codes

Out of 270 ZIP codes with data in District of Columbia, these are the highest-ranked areas for pfas status. See also: National ZIP Codes with PFAS Detections in Water | All District of Columbia Rankings

Statistic	Value
ZIP codes ranked	270
Highest value	0.0 ppt
Median value	0.0 ppt
State	District of Columbia

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Safety Score
1	20001	Washington	DC	67/100
2	20032	Washington	DC	72/100
3	20002	Washington	DC	67/100
4	20003	Washington	DC	72/100
5	20004	Washington	DC	72/100
6	20005	Washington	DC	72/100
7	20006	Washington	DC	72/100
8	20007	Washington	DC	62/100
9	20008	Washington	DC	67/100
10	20009	Washington	DC	67/100
11	20010	Washington	DC	67/100
12	20011	Washington	DC	67/100
13	20012	Washington	DC	67/100
14	20013	Washington	DC	69/100
15	20015	Washington	DC	67/100
16	20016	Washington	DC	67/100
17	20017	Washington	DC	67/100
18	20018	Washington	DC	67/100
19	20019	Washington	DC	62/100
20	20020	Washington	DC	67/100
21	20022	Washington	DC	69/100
22	20024	Washington	DC	72/100
23	20026	Washington	DC	69/100
24	20027	Washington	DC	72/100
25	20029	Washington	DC	69/100
26	20030	Washington	DC	69/100
27	20033	Washington	DC	69/100
28	20035	Washington	DC	69/100
29	20036	Washington	DC	72/100
30	20037	Washington	DC	72/100
31	20038	Washington	DC	69/100
32	20039	Washington	DC	69/100
33	20040	Washington	DC	69/100
34	20041	Washington	DC	69/100
35	20042	Washington	DC	69/100
36	20043	Washington	DC	69/100
37	20044	Washington	DC	69/100
38	20045	Washington	DC	69/100
39	20047	Washington	DC	69/100
40	20049	Washington	DC	69/100
41	20050	Washington	DC	69/100
42	20052	Washington	DC	69/100
43	20053	Washington	DC	69/100
44	20055	Washington	DC	69/100
45	20056	Washington	DC	69/100
46	20057	Washington	DC	69/100
47	20058	Washington	DC	69/100
48	20059	Washington	DC	69/100
49	20060	Washington	DC	69/100
50	20061	Washington	DC	69/100
51	20062	Washington	DC	69/100
52	20063	Washington	DC	69/100
53	20064	Washington	DC	69/100
54	20065	Washington	DC	69/100
55	20066	Washington	DC	69/100
56	20067	Washington	DC	69/100
57	20068	Washington	DC	69/100
58	20069	Washington	DC	69/100
59	20070	Washington	DC	69/100
60	20071	Washington	DC	69/100
61	20073	Washington	DC	69/100
62	20074	Washington	DC	69/100
63	20075	Washington	DC	69/100
64	20076	Washington	DC	69/100
65	20077	Washington	DC	69/100
66	20078	Washington	DC	69/100
67	20080	Washington	DC	69/100
68	20081	Washington	DC	69/100
69	20082	Washington	DC	69/100
70	20090	Washington	DC	69/100
71	20091	Washington	DC	69/100
72	20201	Washington	DC	69/100
73	20202	Washington	DC	69/100
74	20203	Washington	DC	69/100
75	20204	Washington	DC	69/100
76	20206	Washington	DC	69/100
77	20207	Washington	DC	69/100
78	20208	Washington	DC	69/100
79	20210	Washington	DC	69/100
80	20211	Washington	DC	69/100
81	20212	Washington	DC	69/100
82	20213	Washington	DC	69/100
83	20214	Washington	DC	69/100
84	20215	Washington	DC	69/100
85	20216	Washington	DC	69/100
86	20217	Washington	DC	69/100
87	20218	Washington	DC	69/100
88	20219	Washington	DC	69/100
89	20220	Washington	DC	69/100
90	20221	Washington	DC	69/100
91	20222	Washington	DC	69/100
92	20223	Washington	DC	69/100
93	20224	Washington	DC	69/100
94	20226	Washington	DC	69/100
95	20227	Washington	DC	69/100
96	20228	Washington	DC	69/100
97	20229	Washington	DC	69/100
98	20230	Washington	DC	72/100
99	20232	Washington	DC	69/100
100	20233	Washington	DC	69/100

Methodology

PFAS detection data comes from EPA UCMR5 monitoring, state-level testing programs, and Consumer Confidence Reports. ZIP codes are ranked by maximum PFAS concentration detected. The EPA has set MCLs of 4 ppt for PFOA and PFOS individually. PFAS are persistent chemicals that do not break down in the environment.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.

Frequently Asked Questions

What are PFAS?

PFAS (per- and polyfluoroalkyl substances) are synthetic chemicals used in non-stick coatings, firefighting foam, and food packaging since the 1940s. They are called "forever chemicals" because they do not break down naturally. PFAS are linked to cancer, liver damage, thyroid disease, and immune system suppression.

How can I remove PFAS from my water?

Reverse osmosis (RO) and granular activated carbon (GAC) filters are effective at removing most PFAS from drinking water. NSF/ANSI 53 or 58 certified filters are recommended. Boiling water does NOT remove PFAS.

PFAS Detections in District of Columbia ZIP Codes — ...

Top 100 Worst ZIP Codes

Methodology

Frequently Asked Questions

What are PFAS?

How can I remove PFAS from my water?

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