CONGRESSIONAL DISTRICT CA

California - 33rd District

119th Congress · 27 ZIP codes · Avg score 64/100 · Grade C · Updated N/A

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

ZipCheckup's versioned Home Safety Profile covers 27 ZIP codes in California's 33rd District: the measured model 4.0.0 average is Grade C (64/100). 64 EPA violations on record, 7 health-based.

C
District Grade
64
Avg Safety Score
27
ZIP Codes
64
Total Violations
7
Health Violations
19
Water Systems
Best ZIP: 91730 (75/100)
Lowest ZIP: 92374 (53/100)

Top Contaminants

Consumer Confidence Report Rule (33) Lead (11) Haloacetic Acids (HAA5) (6) Total Trihalomethanes (TTHM) (4) Stage 1 DBP Rule (2)

ZIP Codes in This District

27 ZIP codes tracked in California's 33rd District.

# ZIP Code City Safety Score Grade Violations
1 91730 Rancho Cucamonga 75 B 0
2 92336 Fontana 75 B 0
3 92401 San Bernardino 75 B 0
4 92405 San Bernardino 75 B 0
5 92415 San Bernardino 75 B 0
6 92316 Bloomington 73 B 3
7 92411 San Bernardino 70 B 16
8 92407 San Bernardino 65 C 20 (1 health)
9 92376 Rialto 58 C 1
10 92377 Rialto 58 C 0
11 92404 San Bernardino 58 C 2
12 92408 San Bernardino 58 C 2
13 92410 San Bernardino 58 C 1
14 92313 Grand Terrace 57 C 2
15 92346 Highland 56 C 6
16 92359 Mentone 54 D 5 (3 health)
17 92374 Redlands 53 D 6 (3 health)
18 92369 Patton N/A N/A 0
19 92402 San Bernardino N/A N/A N/A
20 92403 San Bernardino N/A N/A N/A
21 92406 San Bernardino N/A N/A N/A
22 92412 San Bernardino N/A N/A N/A
23 92413 San Bernardino N/A N/A N/A
24 92418 San Bernardino N/A N/A N/A
25 92423 San Bernardino N/A N/A N/A
26 92424 San Bernardino N/A N/A N/A
27 92427 San Bernardino N/A N/A N/A

Overview

California's 33rd District encompasses 27 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (64/100).

64 EPA violations have been recorded across this district's water systems. 7 are health-based violations. About 61% of the 18 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 - 33 violations
  • Lead - 11 violations
  • Haloacetic Acids (HAA5) - 6 violations
  • Total Trihalomethanes (TTHM) - 4 violations
  • Stage 1 DBP Rule - 2 violations

Housing Context

Homes in this district were built on average around 1975 (~51 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.

Lead Alert: 1 ZIP code in this district exceed the EPA action level for lead. Consider using a certified lead-removal filter.

Data Sources

Updated daily. Data covers 27 ZIP codes in California's 33rd District.

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How to cite this page

APA ZipCheckup. (2026). Lead Risk in California 33rd District (CA-33). https://zipcheckup.com/congressional/ca-33/
BibTeX
@misc{zipcheckup-congressional-ca-33,
  author = {{ZipCheckup}},
  title  = {{Lead Risk in California 33rd District (CA-33)}},
  year   = {2026},
  url    = {https://zipcheckup.com/congressional/ca-33/}
}

Page version: August 2026.

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