B60/100

Louisiana Tap Water Quality Rankings 2026

259 cities · 5,018,767 people served

Top Contaminant Concerns

Copper (90th percentile)PFOSPFOALead (90th percentile)

All Cities in Louisiana

#	City	Score	Population	Violations
1	Baton Rouge	B (78)	700,026	43
2	Jefferson	A (90)	415,427	5
3	New Orleans	B (64)	387,688	17
4	Lafayette	A (95)	200,526	14
5	Shreveport	D (29)	199,329	92
6	Houma	B (75)	128,118	17
7	Lake Charles	B (70)	117,938	102
8	West Monroe	D (25)	115,164	426
9	Hammond	C (43)	99,533	61
10	Denham Springs	A (84)	99,231	13
11	Lockport	B (77)	81,609	4
12	Covington	B (64)	79,450	118
13	Bossier City	A (80)	78,960	5
14	Alexandria	B (63)	68,128	43
15	Monroe	D (27)	65,313	85
16	Mandeville	A (84)	59,635	75
17	Luling	A (84)	52,879	2
18	Slidell	D (33)	46,338	35
19	Laplace	C (41)	46,151	98
20	Sulphur	C (51)	45,906	43
21	Chalmette	F (0)	44,783	46
22	Opelousas	C (47)	34,989	53
23	Ruston	B (77)	34,087	34
24	Plaquemine	B (72)	32,715	38
25	Benton	B (70)	31,732	59
26	Zachary	B (64)	31,569	8
27	Belle Chasse	F (10)	31,200	99
28	Port Allen	B (71)	30,096	36
29	Abbeville	B (75)	30,009	21
30	Natchitoches	F (0)	27,693	23
31	Maurice	C (52)	27,582	30
32	Pineville	C (53)	25,350	19
33	New Roads	A (85)	24,664	43
34	Bastrop	D (32)	24,531	77
35	Longville	C (54)	24,000	15
36	Minden	B (62)	23,381	109
37	Fort Johnson	B (71)	22,477	20
38	Napoleonville	F (0)	21,366	32
39	Ville Platte	C (45)	20,972	106
40	Tioga	B (62)	19,983	10
41	Many	F (2)	19,929	291
42	Broussard	B (69)	19,575	42
43	Youngsville	B (76)	18,801	16
44	Duson	A (89)	18,798	16
45	Gretna	F (1)	17,026	23
46	Marksville	B (65)	17,001	28
47	Mansfield	F (0)	16,854	177
48	Gonzales	F (17)	16,806	19
49	Blanchard	F (0)	16,326	51
50	Rayne	C (54)	15,996	40
51	Walker	C (55)	15,813	17
52	Morgan City	D (34)	14,965	40
53	Thibodaux	F (0)	14,862	38
54	Ethel	C (41)	14,829	15
55	Convent	F (4)	14,713	69
56	Deridder	B (66)	14,400	7
57	St. Francisville	B (73)	14,349	17
58	Jennings	B (69)	14,031	15
59	Bogalusa	F (0)	14,000	30
60	Breaux Bridge	B (62)	13,890	22
61	Baker	B (75)	13,855	14
62	Patterson	B (67)	13,835	17
63	St. Martinville	D (26)	13,824	84
64	Church Point	C (54)	13,656	21
65	Milton	A (84)	13,212	9
66	Livingston	B (68)	13,202	35
67	Ferriday	D (28)	13,181	372
68	Barksdale Afb	F (12)	13,000	21
69	Parks	F (0)	12,801	34
70	Lake Arthur	A (87)	12,486	14
71	Cecilia	D (31)	12,249	14
72	Albany	C (57)	12,144	21
73	Tallulah	F (5)	12,132	87
74	Deville	A (90)	12,078	3
75	Donaldsonville	F (0)	11,961	102
76	Farmerville	F (0)	11,598	433
77	Kinder	D (33)	11,334	43
78	Boyce	B (62)	11,319	42
79	Coushatta	D (25)	11,217	327
80	Winnfield	F (0)	11,190	164
81	Zwolle	F (0)	11,019	213
82	Grambling	F (0)	10,949	75
83	Sunset	C (48)	10,737	53
84	Leesville	D (38)	10,545	19
85	Carencro	A (89)	10,485	4
86	Westlake	C (48)	10,198	30
87	Loreauville	F (17)	10,137	20
88	Greensburg	B (63)	10,112	18
89	Welsh	A (82)	10,020	10
90	Lawtell	B (64)	9,831	19
91	Eunice	C (42)	9,804	32
92	Charenton	D (24)	9,709	16
93	Scott	A (82)	9,696	10
94	Leonville	F (2)	9,552	30
95	Harrisonburg	D (26)	9,435	171
96	Gilbert	D (29)	9,186	185
97	Winnsboro	C (48)	9,120	31
98	Oakdale	C (41)	8,814	59
99	New Iberia	D (33)	8,775	16
100	New Llano	D (38)	8,595	33
101	Westwego	F (0)	8,534	54
102	Angie	C (49)	8,430	24
103	Natchez	F (0)	8,415	27
104	Arnaudville	D (32)	8,403	50
105	Rayville	F (0)	8,352	140
106	Franklin	F (0)	8,325	123
107	Bernice	F (0)	8,310	139
108	Egan	F (10)	8,193	63
109	Jonesboro	F (1)	8,121	152
110	Crowville	B (67)	7,989	6
111	Delhi	C (49)	7,947	63
112	Homer	C (49)	7,946	82
113	Columbia	C (55)	7,842	68
114	Springhill	C (50)	7,800	11
115	Keithville	A (84)	7,782	16
116	Stonewall	A (82)	7,608	11
117	Franklinton	D (34)	7,600	45
118	Centerville	C (47)	7,500	13
119	Jeanerette	C (51)	7,429	32
120	Basile	D (37)	6,978	41
121	Lake Providence	F (0)	6,954	73
122	Jena	C (52)	6,845	40
123	Oak Grove	C (56)	6,681	46
124	Ponchatoula	B (70)	6,657	10
125	Singer	C (43)	6,613	14
126	Rosepine	B (72)	6,510	16
127	Slagle	A (100)	6,363	0
128	Angola	B (61)	6,362	11
129	Vidalia	B (62)	6,354	10
130	Bunkie	C (46)	6,222	36
131	Jackson	B (68)	6,036	50
132	Jonesville	B (62)	5,952	20
133	Berwick	A (91)	5,898	5
134	Anacoco	B (76)	5,871	13
135	Oberlin	C (47)	5,760	42
136	Port Barre	B (75)	5,688	22
137	Kaplan	D (36)	5,570	48
138	Amite	B (61)	5,434	26
139	Haughton	C (50)	5,355	14
140	Bently	A (80)	5,289	5
141	Pollock	B (78)	5,253	12
142	Choudrant	F (10)	5,250	56
143	Monterey	B (70)	5,250	7
144	Greenwood	D (33)	5,205	20
145	St Joseph	F (0)	5,175	104
146	Turkey Creek	A (84)	5,169	8
147	Bell City	B (64)	5,127	16
148	Woodworth	C (55)	4,818	17
149	Dequincy	A (80)	4,791	4
150	Lutcher	F (0)	4,781	24
151	Downsville	F (0)	4,641	125
152	Mamou	F (0)	4,559	37
153	Plaucheville	A (86)	4,233	6
154	Archibald	B (61)	4,200	16
155	Vinton	A (85)	4,101	4
156	Vivian	F (13)	4,050	20
157	Bordelonville	A (81)	3,900	4
158	Colfax	F (18)	3,896	42
159	Glenmora	B (72)	3,882	24
160	Athens	B (78)	3,843	6
161	Keatchie	F (0)	3,759	53
162	Effie	B (69)	3,726	8
163	Abita Springs	B (61)	3,693	12
164	Grayson	F (14)	3,693	106
165	Iowa	B (78)	3,636	10
166	Calhoun	C (42)	3,633	58
167	Forest Hill	A (82)	3,600	6
168	Haynesville	B (73)	3,600	12
169	Reeves	D (34)	3,582	19
170	Lena	B (69)	3,540	8
171	Arcadia	D (22)	3,508	22
172	Kilbourne	D (20)	3,507	32
173	Ringgold	D (38)	3,408	41
174	Dry Prong	C (40)	3,405	37
175	Pearl River	A (81)	3,333	7
176	Alanta	F (7)	3,324	34
177	Maringouin	C (57)	3,300	12
178	Hessmer	B (70)	3,246	7
179	Trout	C (46)	3,240	11
180	Sarepta	C (55)	3,219	33
181	Starks	B (70)	3,150	18
182	Marion	F (0)	3,147	195
183	Elmer	B (70)	3,135	6
184	Cottonport	D (23)	3,120	21
185	Independence	C (52)	3,052	32
186	Erath	B (67)	2,973	14
187	Prairieville	B (76)	2,904	20
188	Gramercy	F (0)	2,860	69
189	Amelia	B (71)	2,823	17
190	Belmont	F (0)	2,805	140
191	Clinton	B (71)	2,805	14
192	Mer Rouge	B (77)	2,754	17
193	Dubach	F (0)	2,748	145
194	Simsboro	B (77)	2,718	19
195	Hornbeck	A (99)	2,715	1
196	Mansura	A (94)	2,619	2
197	Cankton	C (50)	2,598	18
198	Pine Praire	B (72)	2,598	8
199	Olla	D (24)	2,565	20
200	White Castle	C (48)	2,550	17
201	Start	A (82)	2,514	6
202	Delcambre	B (66)	2,457	15
203	Logansport	F (0)	2,448	28
204	Innis	A (90)	2,400	6
205	Doyline	F (19)	2,373	62
206	Plain Dealing	F (0)	2,346	67
207	Bethany	A (82)	2,334	10
208	Evergreen	B (73)	2,205	11
209	Kentwood	F (0)	2,205	24
210	Pioneer	B (78)	2,190	7
211	Palmetto	F (0)	2,178	43
212	Oil City	F (0)	2,148	146
213	Simmesport	C (58)	2,142	14
214	Krotz Springs	A (87)	2,130	9
215	Provencal	F (9)	2,049	112
216	Gueydan	F (19)	2,016	22
217	Folsom	A (82)	1,992	10
218	Slaughter	A (93)	1,920	7
219	Castor	F (0)	1,860	115
220	Iota	D (30)	1,842	19
221	Cameron	F (0)	1,798	27
222	Sibley	B (62)	1,767	14
223	Grant	A (80)	1,761	13
224	Elm Grove	F (7)	1,755	33
225	Moureauville	A (85)	1,725	11
226	Washington	C (46)	1,713	15
227	Quitman	B (64)	1,710	8
228	Grand Coteau	F (0)	1,650	47
229	Morrow	A (97)	1,572	0
230	Forest	A (80)	1,560	5
231	Chatham	F (0)	1,557	80
232	Cheneyville	C (54)	1,531	22
233	Roseland	F (0)	1,521	33
234	Campti	F (9)	1,515	24
235	Elton	D (29)	1,512	28
236	Johnson Bayou	A (90)	1,509	2
237	Shongaloo	B (79)	1,485	6
238	Cotton Valley	F (15)	1,380	46
239	Fordoche	A (86)	1,380	6
240	Summerfield	A (84)	1,329	5
241	Montgomery	F (0)	1,317	40
242	Kelly	B (70)	1,314	7
243	Melville	D (27)	1,314	34
244	Converse	F (0)	1,260	73
245	Dubberly	A (89)	1,239	7
246	Cullen	F (1)	1,236	59
247	Livonia	A (99)	1,234	1
248	Wisner	D (38)	1,221	27
249	Pelican	B (75)	1,161	9
250	Sicily Island	C (40)	1,140	20
251	Simpson	A (82)	1,116	7
252	Merryville	D (35)	1,107	18
253	Mount Hermon	B (65)	1,107	11
254	Newellton	F (0)	1,100	146
255	Sterlington	F (0)	1,095	41
256	Hineston	F (0)	1,089	27
257	Transylvania	F (9)	1,071	40
258	Echo	B (68)	1,044	13
259	Morganza	A (97)	1,005	3