CONGRESSIONAL DISTRICT CA

California - 27th District

119th Congress · 30 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 30 ZIP codes in California's 27th District: the measured model 4.0.0 average is Grade C (64/100). 75 EPA violations on record, 40 health-based.

C
District Grade
64
Avg Safety Score
30
ZIP Codes
75
Total Violations
40
Health Violations
21
Water Systems
Best ZIP: 91344 (75/100)
Lowest ZIP: 93550 (58/100)

Top Contaminants

Barium (36) Lead (9) Total Trihalomethanes (TTHM) (8) Haloacetic Acids (HAA5) (8) Stage 2 DBP Rule (3)

ZIP Codes in This District

30 ZIP codes tracked in California's 27th District.

# ZIP Code City Safety Score Grade Violations
1 91344 Granada Hills 75 B 0
2 93510 Acton 75 B 0
3 93552 Palmdale 73 B 5
4 93536 Lancaster 72 B 25 (19 health)
5 93551 Palmdale 72 B 8 (1 health)
6 93534 Lancaster 70 B 29 (19 health)
7 93543 Littlerock 69 C 7 (1 health)
8 91321 Newhall 58 C 0
9 91350 Santa Clarita 58 C 0
10 91351 Canyon Country 58 C 0
11 91354 Valencia 58 C 0
12 91355 Valencia 58 C 0
13 91381 Stevenson Ranch 58 C 0
14 91384 Castaic 58 C 0
15 91387 Canyon Country 58 C 0
16 91390 Santa Clarita 58 C 0
17 93550 Palmdale 58 C 0
18 91310 Castaic N/A N/A N/A
19 91322 Newhall N/A N/A N/A
20 91380 Santa Clarita N/A N/A N/A
21 91382 Santa Clarita N/A N/A N/A
22 91383 Santa Clarita N/A N/A N/A
23 91385 Valencia N/A N/A N/A
24 91386 Canyon Country N/A N/A N/A
25 93532 Lake Hughes N/A N/A 1
26 93539 Lancaster N/A N/A N/A
27 93584 Lancaster N/A N/A N/A
28 93586 Lancaster N/A N/A N/A
29 93590 Palmdale N/A N/A N/A
30 93599 Palmdale N/A N/A N/A

Overview

California's 27th District encompasses 30 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (64/100).

75 EPA violations have been recorded across this district's water systems. 40 are health-based violations. About 33% 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:

  • Barium - 36 violations
  • Lead - 9 violations
  • Total Trihalomethanes (TTHM) - 8 violations
  • Haloacetic Acids (HAA5) - 8 violations
  • Stage 2 DBP Rule - 3 violations

Housing Context

Homes in this district were built on average around 1984 (~42 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 30 ZIP codes in California's 27th District.

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How to cite this page

APA ZipCheckup. (2026). California 27th District: 75 EPA Violations - C. https://zipcheckup.com/congressional/ca-27/
BibTeX
@misc{zipcheckup-congressional-ca-27,
  author = {{ZipCheckup}},
  title  = {{California 27th District: 75 EPA Violations - C}},
  year   = {2026},
  url    = {https://zipcheckup.com/congressional/ca-27/}
}

Page version: August 2026.

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