Worst Infrastructure: Missouri — 2026 Rankings

Out of 1,134 ZIP codes with infrastructure data in Missouri, these areas face the highest estimated risk of water pipe failure based on infrastructure age, funding gaps, and violation history.

Statistic	Value
ZIP codes ranked	1,134
Highest risk	67%
Median risk	41%
Average risk	40%
State	Missouri

Top 100 Highest Risk ZIP Codes

Rank	ZIP Code	City	State	Pipe Failure Risk	Risk Level	Safety Score
1	64066	Levasy	MO	67%	Very High	65/100
2	63387	Whiteside	MO	64%	Very High	53/100
3	63950	Lodi	MO	64%	Very High	63/100
4	63653	Leadwood	MO	62%	Very High	58/100
5	63934	Clubb	MO	62%	Very High	53/100
6	63663	Pilot Knob	MO	61%	Very High	69/100
7	65409	Rolla	MO	61%	Very High	82/100
8	64496	Watson	MO	60%	High	64/100
9	64501	Saint Joseph	MO	60%	High	45/100
10	65436	Beulah	MO	60%	High	63/100
11	63566	Winigan	MO	59%	High	53/100
12	64446	Fairfax	MO	59%	High	60/100
13	64781	Roscoe	MO	59%	High	53/100
14	65728	Ponce De Leon	MO	59%	High	63/100
15	65330	Gilliam	MO	58%	High	80/100
16	63118	Saint Louis	MO	57%	High	55/100
17	63567	Worthington	MO	57%	High	53/100
18	64422	Amity	MO	57%	High	50/100
19	64491	Tarkio	MO	57%	High	57/100
20	63109	Saint Louis	MO	56%	High	55/100
21	63111	Saint Louis	MO	56%	High	50/100
22	63115	Saint Louis	MO	56%	High	63/100
23	63116	Saint Louis	MO	56%	High	50/100
24	63353	Louisiana	MO	56%	High	56/100
25	63746	Farrar	MO	56%	High	83/100
26	64021	Corder	MO	56%	High	53/100
27	64683	Trenton	MO	56%	High	83/100
28	64752	Hume	MO	56%	High	60/100
29	64779	Rich Hill	MO	56%	High	78/100
30	65344	Miami	MO	56%	High	83/100
31	63107	Saint Louis	MO	55%	High	55/100
32	63113	Saint Louis	MO	55%	High	63/100
33	63365	New Melle	MO	55%	High	53/100
34	63743	Daisy	MO	55%	High	53/100
35	63824	Blodgett	MO	55%	High	86/100
36	64420	Allendale	MO	55%	High	53/100
37	64475	Parnell	MO	55%	High	66/100
38	64772	Nevada	MO	55%	High	74/100
39	64780	Rockville	MO	55%	High	82/100
40	65248	Fayette	MO	55%	High	83/100
41	65320	Arrow Rock	MO	55%	High	77/100
42	65654	Freistatt	MO	55%	High	78/100
43	65783	Windyville	MO	55%	High	63/100
44	63120	Saint Louis	MO	54%	High	55/100
45	63125	Saint Louis	MO	54%	High	45/100
46	63139	Saint Louis	MO	54%	High	55/100
47	63352	Laddonia	MO	54%	High	81/100
48	63601	Park Hills	MO	54%	High	66/100
49	63703	Cape Girardeau	MO	54%	High	72/100
50	63846	Essex	MO	54%	High	92/100
51	64053	Independence	MO	54%	High	65/100
52	64097	Wellington	MO	54%	High	75/100
53	64428	Burlington Junction	MO	54%	High	61/100
54	65339	Malta Bend	MO	54%	High	82/100
55	65349	Slater	MO	54%	High	81/100
56	65715	Noble	MO	54%	High	53/100
57	63386	West Alton	MO	53%	High	40/100
58	63401	Hannibal	MO	53%	High	59/100
59	63433	Ashburn	MO	53%	High	53/100
60	63750	Gipsy	MO	53%	High	73/100
61	64092	Waldron	MO	53%	High	70/100
62	64113	Kansas City	MO	53%	High	65/100
63	64126	Kansas City	MO	53%	High	60/100
64	64461	Hopkins	MO	53%	High	65/100
65	64463	King City	MO	53%	High	61/100
66	64645	Harris	MO	53%	High	53/100
67	64767	Milo	MO	53%	High	72/100
68	64783	Schell City	MO	53%	High	81/100
69	65246	Dalton	MO	53%	High	53/100
70	65564	Solo	MO	53%	High	63/100
71	63053	Kimmswick	MO	52%	High	63/100
72	63104	Saint Louis	MO	52%	High	63/100
73	63117	Saint Louis	MO	52%	High	55/100
74	63130	Saint Louis	MO	52%	High	40/100
75	63138	Saint Louis	MO	52%	High	50/100
76	63143	Saint Louis	MO	52%	High	50/100
77	63147	Saint Louis	MO	52%	High	55/100
78	63456	Monroe City	MO	52%	High	58/100
79	63552	Macon	MO	52%	High	77/100
80	63555	Memphis	MO	52%	High	69/100
81	63561	Queen City	MO	52%	High	72/100
82	63740	Chaffee	MO	52%	High	74/100
83	63833	Catron	MO	52%	High	66/100
84	63882	Wyatt	MO	52%	High	94/100
85	64022	Dover	MO	52%	High	53/100
86	64123	Kansas City	MO	52%	High	70/100
87	64124	Kansas City	MO	52%	High	70/100
88	64441	Denver	MO	52%	High	53/100
89	64444	Edgerton	MO	52%	High	63/100
90	64449	Fillmore	MO	52%	High	69/100
91	64466	Maitland	MO	52%	High	55/100
92	64655	Lucerne	MO	52%	High	53/100
93	64730	Butler	MO	52%	High	74/100
94	64790	Walker	MO	52%	High	79/100
95	64833	Avilla	MO	52%	High	53/100
96	65327	Emma	MO	52%	High	78/100
97	65529	Jerome	MO	52%	High	50/100
98	65566	Viburnum	MO	52%	High	65/100
99	65777	Moody	MO	52%	High	53/100
100	63006	Chesterfield	MO	51%	High	66/100

Methodology

Infrastructure risk rankings combine four data sources, each weighted equally (25%): (1) EPA Drinking Water Infrastructure Needs Survey (DWINS 2023) — state-level 20-year funding gap per capita for pipe replacement, treatment, and storage; (2) Census ACS housing vintage — percentage of homes built before 1980, when lead solder and galvanized pipes were common; (3) EPA SDWIS violation and enforcement data — system-level compliance history; (4) Lead and Copper Rule indicators — service line material inventories and 90th percentile lead testing results. The combined score is normalized to a 0-100% probability scale.

Data sources: EPA DWINS 2023, Census ACS, EPA SDWIS, Lead and Copper Rule data. Last updated: 2026-07-19.

Frequently Asked Questions

What does pipe failure probability mean?

Pipe failure probability estimates the likelihood of water main breaks, lead contamination from corroded pipes, or service disruptions based on infrastructure age, state funding gaps, violation history, and lead indicators. It is not a prediction of imminent failure, but a risk assessment based on known factors.

How is infrastructure risk calculated?

The risk score combines four equally weighted factors: state-level infrastructure funding gap per capita (from EPA DWINS 2023), housing vintage (Census ACS pre-1980 housing percentage), water system violation and enforcement history (EPA SDWIS), and lead exposure indicators (service line probability and testing results).

What can homeowners do about aging infrastructure?

Test your tap water annually, especially for lead. Check if your home has a lead service line through your water utility. Consider a whole-house water filter (NSF/ANSI 53 certified). Review your water system Consumer Confidence Report for violation history.

Does high risk mean my water is unsafe right now?

Not necessarily. Infrastructure risk indicates long-term vulnerability, not current contamination. However, areas with aging pipes and high violation counts have a statistically higher chance of water quality issues. Regular testing is the best way to verify your water safety.