CONGRESSIONAL DISTRICT MO

Missouri - 3rd District

119th Congress · 122 ZIP codes · Avg score 80/100 · Grade B · Updated N/A

Data: EPA SDWIS / Census 119th Congress Last verified: N/A

ZipCheckup's versioned Home Safety Profile covers 122 ZIP codes in Missouri's 3rd District: the measured model 4.0.0 average is Grade B (80/100). 580 EPA violations on record, 21 health-based.

B
District Grade
80
Avg Safety Score
122
ZIP Codes
580
Total Violations
21
Health Violations
87
Water Systems
Best ZIP: 63301 (83/100)
Lowest ZIP: 63376 (65/100)

Top Contaminants

Consumer Confidence Report Rule (139) Stage 2 DBP Rule (78) Stage 1 DBP Rule (53) Lead and Copper Rule (38) Surface Water Treatment Rule (38)

ZIP Codes in This District

100 ZIP codes tracked in Missouri's 3rd District. Showing top 50 by safety score.

# ZIP Code City Safety Score Grade Violations
1 63301 Saint Charles 83 B 1
2 63303 Saint Charles 83 B 1
3 63304 Saint Charles 83 B 2
4 63388 Williamsburg 83 B 0
5 65059 Mokane 83 B 0
6 65063 New Bloomfield 83 B 1
7 65067 Portland 83 B 0
8 65077 Steedman 83 B 0
9 65080 Tebbetts 83 B 0
10 65010 Ashland 82 B 2
11 65039 Hartsburg 82 B 2
12 65043 Holts Summit 82 B 1
13 65231 Auxvasse 82 B 3
14 65251 Fulton 82 B 5
15 65262 Kingdom City 82 B 3
16 63367 Lake Saint Louis 81 B 3
17 63016 Cedar Hill 80 B 6 (1 health)
18 63051 House Springs 80 B 7
19 65203 Columbia 80 B 3
20 65201 Columbia 79 B 7
21 65279 Rocheport 79 B 5 (1 health)
22 63020 De Soto 78 B 9 (1 health)
23 63050 Hillsboro 78 B 9 (1 health)
24 63366 O Fallon 77 B 10
25 63049 High Ridge 76 B 49 (1 health)
26 63376 Saint Peters 65 C 4
27 63023 Dittmer N/A N/A 1
28 63030 Fletcher N/A N/A N/A
29 63066 Morse Mill N/A N/A N/A
30 63071 Richwoods N/A N/A N/A
31 63091 Rosebud N/A N/A 0
32 63302 Saint Charles N/A N/A N/A
33 63333 Bellflower N/A N/A 10 (1 health)
34 63338 Cottleville N/A N/A N/A
35 63346 Flinthill N/A N/A N/A
36 63350 High Hill N/A N/A 5 (1 health)
37 63351 Jonesburg N/A N/A 5 (1 health)
38 63359 Middletown N/A N/A 5
39 63361 Montgomery City N/A N/A 10 (1 health)
40 63363 New Florence N/A N/A 5 (1 health)
41 63373 Portage Des Sioux N/A N/A N/A
42 63381 Truxton N/A N/A 5 (1 health)
43 63384 Wellsville N/A N/A 10 (1 health)
44 63386 West Alton N/A N/A N/A
45 63622 Belgrade N/A N/A 3
46 63630 Cadet N/A N/A 4
47 63631 Caledonia N/A N/A 3
48 63648 Irondale N/A N/A 19 (4 health)
49 63660 Mineral Point N/A N/A 7
50 63664 Potosi N/A N/A 7

Overview

Missouri's 3rd District encompasses 122 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (80/100).

580 EPA violations have been recorded across this district's water systems. 21 are health-based violations. About 89% of the 84 ZIP records with a reported violation count have at least one violation.

Top Contaminants

The most frequently cited water quality issues in this district:

  • Consumer Confidence Report Rule - 139 violations
  • Stage 2 DBP Rule - 78 violations
  • Stage 1 DBP Rule - 53 violations
  • Lead and Copper Rule - 38 violations
  • Surface Water Treatment Rule - 38 violations

Housing Context

Homes in this district were built on average around 1981 (~45 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.

Data Sources

Updated daily. Data covers 122 ZIP codes in Missouri's 3rd District.

← Back to Missouri overview

How to cite this page

APA ZipCheckup. (2026). Missouri 3rd District: 580 EPA Violations - B. https://zipcheckup.com/congressional/mo-3/
BibTeX
@misc{zipcheckup-congressional-mo-3,
  author = {{ZipCheckup}},
  title  = {{Missouri 3rd District: 580 EPA Violations - B}},
  year   = {2026},
  url    = {https://zipcheckup.com/congressional/mo-3/}
}

Page version: August 2026.

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