PFAS Detections in Louisiana ZIP Codes — 2026

Out of 140 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	140
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	79/100
2	70339	Pierre Part	LA	42/100
3	70341	Belle Rose	LA	47/100
4	70372	Labadieville	LA	52/100
5	70380	Morgan City	LA	72/100
6	70390	Napoleonville	LA	85/100
7	70391	Paincourtville	LA	60/100
8	70393	Plattenville	LA	60/100
9	70736	Glynn	LA	60/100
10	70749	Jarreau	LA	47/100
11	70773	Rougon	LA	60/100
12	70783	Ventress	LA	47/100
13	70764	Plaquemine	LA	60/100
14	70765	Plaquemine	LA	75/100
15	70030	Des Allemands	LA	42/100
16	70031	Ama	LA	47/100
17	70039	Boutte	LA	42/100
18	70047	Destrehan	LA	37/100
19	70057	Hahnville	LA	47/100
20	70062	Kenner	LA	37/100
21	70065	Kenner	LA	37/100
22	70068	La Place	LA	37/100
23	70070	Luling	LA	75/100
24	70078	New Sarpy	LA	47/100
25	70079	Norco	LA	42/100
26	70080	Paradis	LA	52/100
27	70087	Saint Rose	LA	37/100
28	70112	New Orleans	LA	64/100
29	70113	New Orleans	LA	64/100
30	70115	New Orleans	LA	64/100
31	70116	New Orleans	LA	64/100
32	70117	New Orleans	LA	64/100
33	70118	New Orleans	LA	64/100
34	70119	New Orleans	LA	64/100
35	70122	New Orleans	LA	64/100
36	70124	New Orleans	LA	64/100
37	70125	New Orleans	LA	64/100
38	70126	New Orleans	LA	64/100
39	70127	New Orleans	LA	64/100
40	70128	New Orleans	LA	64/100
41	70129	New Orleans	LA	64/100
42	70130	New Orleans	LA	64/100
43	70148	New Orleans	LA	79/100
44	70114	New Orleans	LA	64/100
45	70131	New Orleans	LA	64/100
46	70460	Slidell	LA	74/100
47	71201	Monroe	LA	51/100
48	71202	Monroe	LA	51/100
49	71203	Monroe	LA	51/100
50	71403	Anacoco	LA	84/100
51	71429	Florien	LA	85/100
52	71449	Many	LA	65/100
53	70037	Belle Chasse	LA	50/100
54	70083	Port Sulphur	LA	37/100
55	70353	Dulac	LA	37/100
56	70360	Houma	LA	80/100
57	70397	Theriot	LA	42/100
58	71101	Shreveport	LA	65/100
59	71103	Shreveport	LA	65/100
60	71104	Shreveport	LA	55/100
61	71105	Shreveport	LA	55/100
62	71106	Shreveport	LA	55/100
63	71107	Shreveport	LA	60/100
64	71108	Shreveport	LA	60/100
65	71109	Shreveport	LA	60/100
66	71115	Shreveport	LA	60/100
67	71118	Shreveport	LA	55/100
68	71119	Shreveport	LA	60/100
69	71129	Shreveport	LA	60/100
70	70392	Patterson	LA	69/100
71	71006	Benton	LA	89/100
72	70052	Gramercy	LA	69/100
73	70343	Bourg	LA	47/100
74	70344	Chauvin	LA	37/100
75	70352	Donner	LA	60/100
76	70356	Gibson	LA	47/100
77	70359	Gray	LA	47/100
78	70377	Montegut	LA	37/100
79	70395	Schriever	LA	47/100
80	70301	Thibodaux	LA	75/100
81	70345	Cut Off	LA	37/100
82	70346	Donaldsonville	LA	81/100
83	70354	Galliano	LA	42/100
84	70355	Gheens	LA	52/100
85	70357	Golden Meadow	LA	37/100
86	70364	Houma	LA	75/100
87	70373	Larose	LA	42/100
88	70374	Lockport	LA	80/100
89	70375	Mathews	LA	60/100
90	70394	Raceland	LA	42/100
91	70001	Metairie	LA	37/100
92	70002	Metairie	LA	37/100
93	70003	Metairie	LA	37/100
94	70005	Metairie	LA	37/100
95	70006	Metairie	LA	37/100
96	70121	New Orleans	LA	64/100
97	70123	New Orleans	LA	64/100
98	70036	Barataria	LA	37/100
99	70056	Gretna	LA	73/100
100	70058	Harvey	LA	37/100

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.