2026 Rankings

Least Reliable Water Systems in Louisiana — 2026

Last updated: June 4, 2026

801 ZIP codes ranked by Reliability Score #1: ZIP 71247 (Hodge, LA) — 10/100
Lead Violations Lowest Score Safest Flood Risk Energy Cost Radon PFAS Reliability EJ Index Homebuyer Risk CO & Gas Safest Gas Remediation Burden Unresolved Violations (by Utility) Water Equity (by Utility)

Out of 801 ZIP codes with data in Louisiana, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All Louisiana Rankings

Statistic Value
ZIP codes ranked 801
Lowest value 10/100
Median value 65/100
State Louisiana

100 Lowest-Ranked ZIP Codes

Rank ZIP Code City State Reliability Score Safety Score
1 71247 Hodge LA 10/100 82/100
2 71432 Georgetown LA 10/100 65/100
3 70037 Belle Chasse LA 15/100 50/100
4 70093 Belle Chasse LA 15/100 66/100
5 70462 Springfield LA 15/100 61/100
6 70538 Franklin LA 15/100 50/100
7 70630 Bell City LA 15/100 66/100
8 70631 Cameron LA 15/100 42/100
9 70632 Creole LA 15/100 55/100
10 70643 Grand Chenier LA 15/100 55/100
11 71016 Castor LA 15/100 46/100
12 71019 Coushatta LA 15/100 65/100
13 71037 Haughton LA 15/100 63/100
14 71046 Keatchie LA 15/100 66/100
15 71070 Saline LA 15/100 65/100
16 71222 Bernice LA 15/100 65/100
17 71223 Bonita LA 15/100 65/100
18 71229 Collinston LA 15/100 80/100
19 71234 Downsville LA 15/100 65/100
20 71235 Dubach LA 15/100 70/100
21 71238 Eros LA 15/100 70/100
22 71241 Farmerville LA 15/100 55/100
23 71260 Marion LA 15/100 65/100
24 71269 Rayville LA 15/100 55/100
25 71280 Sterlington LA 15/100 65/100
26 71326 Clayton LA 15/100 50/100
27 71334 Ferriday LA 15/100 55/100
28 71336 Gilbert LA 15/100 65/100
29 71340 Harrisonburg LA 15/100 60/100
30 71353 Melville LA 15/100 75/100
31 71357 Newellton LA 15/100 60/100
32 71406 Belmont LA 15/100 66/100
33 71410 Calvin LA 15/100 70/100
34 71414 Clarence LA 15/100 52/100
35 71419 Converse LA 15/100 70/100
36 71435 Grayson LA 15/100 70/100
37 71440 Joyce LA 15/100 66/100
38 71449 Many LA 15/100 65/100
39 71467 Pollock LA 15/100 60/100
40 71468 Provencal LA 15/100 70/100
41 71473 Sikes LA 15/100 66/100
42 71479 Tullos LA 15/100 66/100
43 71483 Winnfield LA 15/100 60/100
44 71486 Zwolle LA 15/100 70/100
45 70576 Pine Prairie LA 18/100 85/100
46 71023 Doyline LA 18/100 72/100
47 71282 Tallulah LA 18/100 47/100
48 71284 Tallulah LA 18/100 62/100
49 70772 Rosedale LA 20/100 80/100
50 71008 Bienville LA 20/100 70/100
51 71033 Greenwood LA 20/100 60/100
52 70560 New Iberia LA 21/100 59/100
53 70562 New Iberia LA 21/100 74/100
54 70788 White Castle LA 21/100 78/100
55 71021 Cullen LA 21/100 84/100
56 71039 Heflin LA 21/100 81/100
57 71245 Grambling LA 21/100 86/100
58 71268 Quitman LA 21/100 86/100
59 71454 Montgomery LA 21/100 86/100
60 70052 Gramercy LA 23/100 69/100
61 70392 Patterson LA 23/100 69/100
62 70523 Charenton LA 23/100 79/100
63 70444 Kentwood LA 25/100 75/100
64 70531 Egan LA 25/100 67/100
65 71040 Homer LA 25/100 70/100
66 71052 Mansfield LA 25/100 65/100
67 71064 Plain Dealing LA 25/100 69/100
68 71065 Pleasant Hill LA 25/100 66/100
69 71111 Bossier City LA 25/100 55/100
70 71112 Bossier City LA 25/100 55/100
71 71113 Bossier City LA 25/100 66/100
72 71171 Bossier City LA 25/100 70/100
73 71172 Bossier City LA 25/100 66/100
74 71201 Monroe LA 25/100 51/100
75 71202 Monroe LA 25/100 51/100
76 71203 Monroe LA 25/100 51/100
77 71207 Monroe LA 25/100 66/100
78 71208 Monroe LA 25/100 69/100
79 71209 Monroe LA 25/100 69/100
80 71210 Monroe LA 25/100 66/100
81 71211 Monroe LA 25/100 66/100
82 71212 Monroe LA 25/100 69/100
83 71213 Monroe LA 25/100 69/100
84 71217 Monroe LA 25/100 69/100
85 71220 Bastrop LA 25/100 67/100
86 71221 Bastrop LA 25/100 77/100
87 71254 Lake Providence LA 25/100 74/100
88 71301 Alexandria LA 25/100 55/100
89 71302 Alexandria LA 25/100 55/100
90 71303 Alexandria LA 25/100 55/100
91 71306 Alexandria LA 25/100 70/100
92 71307 Alexandria LA 25/100 70/100
93 71309 Alexandria LA 25/100 65/100
94 71315 Alexandria LA 25/100 70/100
95 71322 Bunkie LA 25/100 66/100
96 70340 Amelia LA 26/100 68/100
97 70669 Westlake LA 26/100 71/100
98 71028 Gibsland LA 28/100 88/100
99 70422 Amite LA 29/100 77/100
100 70577 Port Barre LA 29/100 77/100

Methodology

Water system reliability scores (0-100) combine violation frequency, violation recency, resolution rate, and system size. Systems with repeated health-based violations and unresolved issues score lowest. The reliability score focuses specifically on the water utility performance, distinct from the broader Home Safety Score.

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 does a low water reliability score mean?

A low reliability score (below 50) indicates a water system with frequent violations, poor resolution rates, or recurring compliance issues. These systems may have aging infrastructure, inadequate treatment, or management challenges.

How is reliability different from safety score?

The reliability score focuses specifically on the water utility performance (violations, resolution, compliance). The Home Safety Score is broader, also including lead risk, radon, and flood data. A ZIP code can have a reliable water system but still have high radon or flood risk.

Explore More Rankings

How this ranking is calculated, data sources, and limitations: Rankings Methodology →

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Home Safety 2026 Combined water, lead, radon and environmental risk PFAS 2026 Forever chemicals detected in drinking water Lead Risk 2026 Lead pipe infrastructure and EPA exceedances
Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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