CONGRESSIONAL DISTRICT NC

North Carolina - 4th District

119th Congress · 35 ZIP codes · Avg score 71/100 · Grade B · Updated N/A

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

ZipCheckup's versioned Home Safety Profile covers 35 ZIP codes in North Carolina's 4th District: the measured model 4.0.0 average is Grade B (71/100). 593 EPA violations on record, 27 health-based.

B
District Grade
71
Avg Safety Score
35
ZIP Codes
593
Total Violations
27
Health Violations
40
Water Systems
Durham
Best ZIP: 27701 (83/100)
Apex
Lowest ZIP: 27539 (50/100)

Top Contaminants

Surface Water Treatment Rule (71) Consumer Confidence Report Rule (50) Stage 1 DBP Rule (32) Stage 2 DBP Rule (32) Total Trihalomethanes (TTHM) (30)

ZIP Codes in This District

35 ZIP codes tracked in North Carolina's 4th District.

# ZIP Code City Safety Score Grade Violations
1 27701 Durham 83 B 2
2 27704 Durham 82 B 3
3 27707 Durham 81 B 8
4 27712 Durham 81 B 7
5 27523 Apex 79 B 10 (3 health)
6 27519 Cary 75 B 25 (1 health)
7 27562 New Hill 75 B 16 (2 health)
8 27705 Durham 73 B 23 (1 health)
9 27713 Durham 72 B 24 (2 health)
10 27703 Durham 67 C 102 (1 health)
11 27502 Apex 65 C 3 (1 health)
12 27540 Holly Springs 60 C 14
13 27560 Morrisville 53 D 40 (1 health)
14 27539 Apex 50 D 131 (1 health)
15 27228 Bynum N/A N/A N/A
16 27231 Cedar Grove N/A N/A N/A
17 27243 Efland N/A N/A 55 (3 health)
18 27278 Hillsborough N/A N/A 70 (4 health)
19 27312 Pittsboro N/A N/A 21 (4 health)
20 27503 Bahama N/A N/A 2
21 27510 Carrboro N/A N/A 1
22 27514 Chapel Hill N/A N/A 6
23 27515 Chapel Hill N/A N/A N/A
24 27516 Chapel Hill N/A N/A 19 (2 health)
25 27517 Chapel Hill N/A N/A 8 (1 health)
26 27599 Chapel Hill N/A N/A 1
27 27702 Durham N/A N/A N/A
28 27706 Durham N/A N/A N/A
29 27708 Durham N/A N/A 2
30 27709 Durham N/A N/A N/A
31 27710 Durham N/A N/A N/A
32 27711 Durham N/A N/A N/A
33 27715 Durham N/A N/A N/A
34 27717 Durham N/A N/A N/A
35 27722 Durham N/A N/A N/A

Overview

North Carolina's 4th District encompasses 35 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (71/100).

593 EPA violations have been recorded across this district's water systems. 27 are health-based violations. About 100% of the 24 ZIP records with a reported violation count have at least one violation.

Top Contaminants

The most frequently cited water quality issues in this district:

  • Surface Water Treatment Rule - 71 violations
  • Consumer Confidence Report Rule - 50 violations
  • Stage 1 DBP Rule - 32 violations
  • Stage 2 DBP Rule - 32 violations
  • Total Trihalomethanes (TTHM) - 30 violations

Housing Context

Homes in this district were built on average around 1993 (~33 years old). Most homes were built after lead pipe regulations were tightened.

Data Sources

Updated daily. Data covers 35 ZIP codes in North Carolina's 4th District.

← Back to North Carolina overview

How to cite this page

APA ZipCheckup. (2026). North Carolina 4th District: 593 EPA Violations - B. https://zipcheckup.com/congressional/nc-4/
BibTeX 
@misc{zipcheckup-congressional-nc-4,
  author = {{ZipCheckup}},
  title  = {{North Carolina 4th District: 593 EPA Violations - B}},
  year   = {2026},
  url    = {https://zipcheckup.com/congressional/nc-4/}
}

Page version: August 2026.

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