PFAS Detections in Louisiana ZIP Codes — 2026

Out of 130 ZIP codes with data in Louisiana, these are the highest-ranked areas for pfas status. See also: National ZIP Codes with PFAS Detections in Water | All Louisiana Rankings

Statistic	Value
ZIP codes ranked	130
Highest value	0.0 ppt
Median value	0.0 ppt
State	Louisiana

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Safety Score
1	70523	Charenton	LA	—
2	70339	Pierre Part	LA	—
3	70341	Belle Rose	LA	—
4	70372	Labadieville	LA	—
5	70380	Morgan City	LA	—
6	70390	Napoleonville	LA	—
7	70391	Paincourtville	LA	—
8	70393	Plattenville	LA	—
9	70736	Glynn	LA	96/100
10	70749	Jarreau	LA	91/100
11	70773	Rougon	LA	100/100
12	70783	Ventress	LA	91/100
13	70764	Plaquemine	LA	67/100
14	70030	Des Allemands	LA	100/100
15	70031	Ama	LA	—
16	70039	Boutte	LA	—
17	70047	Destrehan	LA	—
18	70057	Hahnville	LA	—
19	70062	Kenner	LA	100/100
20	70065	Kenner	LA	100/100
21	70068	La Place	LA	100/100
22	70070	Luling	LA	—
23	70079	Norco	LA	—
24	70080	Paradis	LA	—
25	70087	Saint Rose	LA	—
26	70112	New Orleans	LA	82/100
27	70113	New Orleans	LA	82/100
28	70115	New Orleans	LA	82/100
29	70116	New Orleans	LA	82/100
30	70117	New Orleans	LA	77/100
31	70118	New Orleans	LA	82/100
32	70119	New Orleans	LA	82/100
33	70122	New Orleans	LA	82/100
34	70124	New Orleans	LA	82/100
35	70125	New Orleans	LA	82/100
36	70126	New Orleans	LA	77/100
37	70127	New Orleans	LA	77/100
38	70128	New Orleans	LA	77/100
39	70129	New Orleans	LA	77/100
40	70130	New Orleans	LA	82/100
41	70148	New Orleans	LA	82/100
42	70114	New Orleans	LA	77/100
43	70131	New Orleans	LA	77/100
44	70460	Slidell	LA	91/100
45	71201	Monroe	LA	95/100
46	71202	Monroe	LA	91/100
47	71203	Monroe	LA	87/100
48	71403	Anacoco	LA	—
49	71429	Florien	LA	—
50	71449	Many	LA	—
51	70037	Belle Chasse	LA	—
52	70083	Port Sulphur	LA	—
53	70353	Dulac	LA	100/100
54	70360	Houma	LA	100/100
55	70397	Theriot	LA	100/100
56	71101	Shreveport	LA	88/100
57	71103	Shreveport	LA	88/100
58	71104	Shreveport	LA	88/100
59	71105	Shreveport	LA	88/100
60	71106	Shreveport	LA	88/100
61	71107	Shreveport	LA	83/100
62	71108	Shreveport	LA	88/100
63	71109	Shreveport	LA	88/100
64	71115	Shreveport	LA	88/100
65	71118	Shreveport	LA	86/100
66	71119	Shreveport	LA	84/100
67	71129	Shreveport	LA	83/100
68	70392	Patterson	LA	—
69	71006	Benton	LA	87/100
70	70052	Gramercy	LA	99/100
71	70343	Bourg	LA	100/100
72	70344	Chauvin	LA	100/100
73	70352	Donner	LA	100/100
74	70356	Gibson	LA	100/100
75	70359	Gray	LA	100/100
76	70377	Montegut	LA	100/100
77	70395	Schriever	LA	100/100
78	70301	Thibodaux	LA	95/100
79	70346	Donaldsonville	LA	83/100
80	70355	Gheens	LA	100/100
81	70364	Houma	LA	100/100
82	70373	Larose	LA	100/100
83	70374	Lockport	LA	100/100
84	70375	Mathews	LA	100/100
85	70394	Raceland	LA	100/100
86	70001	Metairie	LA	100/100
87	70002	Metairie	LA	100/100
88	70003	Metairie	LA	100/100
89	70005	Metairie	LA	100/100
90	70006	Metairie	LA	100/100
91	70121	New Orleans	LA	100/100
92	70123	New Orleans	LA	100/100
93	70036	Barataria	LA	99/100
94	70056	Gretna	LA	95/100
95	70058	Harvey	LA	95/100
96	70067	Lafitte	LA	99/100
97	70072	Marrero	LA	93/100
98	70094	Westwego	LA	97/100
99	70358	Grand Isle	LA	99/100
100	70582	Saint Martinville	LA	67/100

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: 2026-08-31.

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.