CONGRESSIONAL DISTRICT CA

California - 23rd District

119th Congress · 76 ZIP codes · Avg score 65/100 · Grade C · Updated N/A

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

ZipCheckup's versioned Home Safety Profile covers 76 ZIP codes in California's 23rd District: the measured model 4.0.0 average is Grade C (65/100). 168 EPA violations on record, 82 health-based.

C
District Grade
65
Avg Safety Score
76
ZIP Codes
168
Total Violations
82
Health Violations
74
Water Systems
Best ZIP: 92277 (75/100)
Lowest ZIP: 92399 (52/100)

Top Contaminants

Combined Radium (63) Stage 2 DBP Rule (27) Lead (25) Haloacetic Acids (HAA5) (17) Total Trihalomethanes (TTHM) (13)

ZIP Codes in This District

76 ZIP codes tracked in California's 23rd District. Showing top 50 by safety score.

# ZIP Code City Safety Score Grade Violations
1 92277 Twentynine Palms 75 B 0
2 92310 Fort Irwin 75 B 0
3 92344 Hesperia 75 B 0
4 92371 Phelan 75 B 0
5 92372 Pinon Hills 75 B 0
6 92392 Victorville 75 B 0
7 92394 Victorville 75 B 2
8 92395 Victorville 75 B 1
9 93591 Palmdale 75 B 0
10 92252 Joshua Tree 74 B 1
11 92284 Yucca Valley 74 B 22 (21 health)
12 92307 Apple Valley 74 B 6 (1 health)
13 92385 Skyforest 74 B 2
14 93505 California City 74 B 1
15 93535 Lancaster 70 B 4 (1 health)
16 92308 Apple Valley 62 C 12 (3 health)
17 92301 Adelanto 58 C 1
18 92311 Barstow 58 C 1
19 92314 Big Bear City 58 C 3
20 92315 Big Bear Lake 58 C 0
21 92317 Blue Jay 58 C 0
22 92342 Helendale 58 C 0
23 92345 Hesperia 58 C 0
24 92350 Loma Linda 58 C 1
25 92352 Lake Arrowhead 58 C 2
26 92354 Loma Linda 58 C 2
27 92386 Sugarloaf 58 C 0
28 92382 Running Springs 57 C 4
29 92324 Colton 56 C 3
30 92321 Cedar Glen 55 C 7
31 92325 Crestline 54 D 2 (1 health)
32 92373 Redlands 53 D 6 (3 health)
33 92399 Yucaipa 52 D 6 (3 health)
34 92256 Morongo Valley N/A N/A 43 (42 health)
35 92268 Pioneertown N/A N/A 1
36 92278 Twentynine Palms N/A N/A N/A
37 92285 Landers N/A N/A 1
38 92286 Yucca Valley N/A N/A N/A
39 92304 Amboy N/A N/A N/A
40 92305 Angelus Oaks N/A N/A 7 (1 health)
41 92309 Baker N/A N/A N/A
42 92312 Barstow N/A N/A N/A
43 92318 Bryn Mawr N/A N/A N/A
44 92322 Cedarpines Park N/A N/A 2 (1 health)
45 92323 Cima N/A N/A N/A
46 92327 Daggett N/A N/A 0
47 92329 Phelan N/A N/A N/A
48 92332 Essex N/A N/A N/A
49 92333 Fawnskin N/A N/A N/A
50 92338 Ludlow N/A N/A N/A

Overview

California's 23rd District encompasses 76 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (65/100).

168 EPA violations have been recorded across this district's water systems. 82 are health-based violations. About 64% of the 47 ZIP records with a reported violation count have at least one violation.

Top Contaminants

The most frequently cited water quality issues in this district:

  • Combined Radium - 63 violations
  • Stage 2 DBP Rule - 27 violations
  • Lead - 25 violations
  • Haloacetic Acids (HAA5) - 17 violations
  • Total Trihalomethanes (TTHM) - 13 violations

Housing Context

Homes in this district were built on average around 1976 (~50 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.

Lead Alert: 2 ZIP codes in this district exceed the EPA action level for lead. Consider using a certified lead-removal filter.

Data Sources

Updated daily. Data covers 76 ZIP codes in California's 23rd District.

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How to cite this page

APA ZipCheckup. (2026). Lead Risk in California 23rd District (CA-23). https://zipcheckup.com/congressional/ca-23/
BibTeX
@misc{zipcheckup-congressional-ca-23,
  author = {{ZipCheckup}},
  title  = {{Lead Risk in California 23rd District (CA-23)}},
  year   = {2026},
  url    = {https://zipcheckup.com/congressional/ca-23/}
}

Page version: August 2026.

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