Tap Water in San Mateo, California

Overall rating

High concern tap water rating

Water systems

• Water systems serving ZIP 94401

  Score 20 · 27 contaminants · 16 over guideline

• Haloacetic acids (HAA9)Water systems serving ZIP 944010.0346 mg/L
• Haloacetic acids (HAA5)Water systems serving ZIP 944010.0362 mg/L
• Total Trihalomethanes Water systems serving ZIP 944010.0376 mg/L
• Trichloroacetic acidWater systems serving ZIP 944010.0132 mg/L
• Dichloroacetic acidWater systems serving ZIP 944010.0196 mg/L
• ChloroformWater systems serving ZIP 944010.036 mg/L
• BromodichloromethaneWater systems serving ZIP 944010.0018 mg/L
• Propylene NitrateWater systems serving ZIP 944013.2805
• Propylene NitrateWater systems serving ZIP 944012.9462
• ArsenicWater systems serving ZIP 944017.88e-5 mg/L
• BromateWater systems serving ZIP 944014.00e-4 mg/L
• Chromium (hexavalent)Water systems serving ZIP 944014.53e-5 mg/L
• DibromochloromethaneWater systems serving ZIP 944011.40e-4 mg/L
• Dibromoacetic acidWater systems serving ZIP 944012.93e-5 mg/L
• ChlorateWater systems serving ZIP 944010.1509 mg/L
• UraniumWater systems serving ZIP 944010.2063 pCi/L
• PerchlorateWater systems serving ZIP 944013.32e-4 ppm
• Aluminum FluorideWater systems serving ZIP 944019.1556
• Monochloroacetic acidWater systems serving ZIP 944017.18e-4 ppm
• BariumWater systems serving ZIP 944010.0023 mg/L
• Strontium-90 Water systems serving ZIP 944011.37e-4 pCi/L
• Aluminum FluorideWater systems serving ZIP 944010.2718
• Chromium (hexavalent)Water systems serving ZIP 944010.003 mg/L
• Benzalkonium BromideWater systems serving ZIP 944019.275
• Vanadium (as Vanadium Amino Acid Chelate)Water systems serving ZIP 944010.8438
• Molybdenum (molybdenum (VI) citrate, molybdenum (VI) bisglycinate)Water systems serving ZIP 944010.1625
• ManganeseWater systems serving ZIP 944010.0047 mg/L