Los Angeles County, CA
ZIP 93551
In ZIP 93551, 7 of the 12 things we check have at least one part graded D or F.
- Drinking water: Santa Clarita Valley Water Agency has 2 contaminants at or over an EPA legal limit; 19 contaminants are above health goals, led by lithium at 2.3× the USGS health-based screening level.
- Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
- Largest share of modeled toxic air from industry: Lockheed Martin Aeronautics Co (99%), mostly chromium.
- Fine particles (PM2.5) average 8.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
- About 250,208 kg of agricultural pesticides are applied in the county each year.
Grades for ZIP 93551
- Superfund sites nearbyA
- Factories and industrial sitesB to F
- Oil and gas wellsA to C
- Parks and nature nearbyA to D
- Air qualityA to D
- Drinking water qualityB to F
- Pesticide useB to C
- Neighborhood health statusA to C
- Past wildfire impactsA to F
- Past flood impactsA
- Noise levelsA to D
- Radiation signalsB to D
Based on 16 census tracts · compiled October 25, 2026 · how each grade works and its sources
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