PFAS Comply

CALIFORNIA WATER SERVICE - SAN MATEO

PWSID: CA4110008 · SAN JOSE, CA · Serving 102,348 people

Type: CWSOwner: PSource: SW
Compliant

All PFAS compounds below EPA Maximum Contaminant Levels.

Key contaminants vs MCL

EPA MCL: 4 ppt (parts per trillion) for PFOA and PFOS individually. Compliance deadline: 2031-12-31

Detection summary

0
PFAS compounds detected
N/A ppt
Highest single detection
2024-08-15
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
ADONAND—Below MRL2024-05-16
lithiumND—Below MRL2024-05-16
PFMBAND—Below MRL2024-05-16
PFPeAND—Below MRL2024-05-16
PFMPAND—Below MRL2024-05-16
PFPeSND—Below MRL2024-05-16
8:2 FTSND—Below MRL2024-05-16
4:2 FTSND—Below MRL2024-05-16
6:2 FTSND—Below MRL2024-05-16
HFPO-DAND10Below MRL2024-05-16
9Cl-PF3ONSND—Below MRL2024-05-16
PFHpSND—Below MRL2024-05-16
PFBSND—Below MRL2024-05-16
PFOSND4Below MRL2024-05-16
11Cl-PF3OUdSND—Below MRL2024-05-16
PFHpAND—Below MRL2024-05-16
PFBAND—Below MRL2024-05-16
PFDoAND—Below MRL2024-05-16
PFTAND—Below MRL2024-05-16
NEtFOSAAND—Below MRL2024-05-16
NMeFOSAAND—Below MRL2024-05-16
PFHxSND10Below MRL2024-05-16
PFTrDAND—Below MRL2024-05-16
PFHxAND—Below MRL2024-05-16
PFDAND—Below MRL2024-05-16
PFOAND4Below MRL2024-05-16
PFNAND10Below MRL2024-05-16
PFUnAND—Below MRL2024-05-16
NFDHAND—Below MRL2024-05-16
PFEESAND—Below MRL2024-05-16
PFTAND—Below MRL2024-08-15
PFHpSND—Below MRL2024-08-15
PFPeSND—Below MRL2024-08-15
NFDHAND—Below MRL2024-08-15
PFBSND—Below MRL2024-08-15
PFTrDAND—Below MRL2024-08-15
NMeFOSAAND—Below MRL2024-08-15
NEtFOSAAND—Below MRL2024-08-15
8:2 FTSND—Below MRL2024-08-15
PFBAND—Below MRL2024-08-15
HFPO-DAND10Below MRL2024-08-15
ADONAND—Below MRL2024-08-15
9Cl-PF3ONSND—Below MRL2024-08-15
11Cl-PF3OUdSND—Below MRL2024-08-15
PFUnAND—Below MRL2024-08-15
PFHxAND—Below MRL2024-08-15
6:2 FTSND—Below MRL2024-08-15
PFMPAND—Below MRL2024-08-15
4:2 FTSND—Below MRL2024-08-15
PFEESAND—Below MRL2024-08-15
PFDAND—Below MRL2024-08-15
PFHxSND10Below MRL2024-08-15
PFOSND4Below MRL2024-08-15
PFNAND10Below MRL2024-08-15
PFHpAND—Below MRL2024-08-15
lithiumND—Below MRL2024-08-15
PFDoAND—Below MRL2024-08-15
PFMBAND—Below MRL2024-08-15
PFPeAND—Below MRL2024-08-15
PFOAND4Below MRL2024-08-15
PFTrDAND—Below MRL2024-11-06
PFTAND—Below MRL2024-11-06
NEtFOSAAND—Below MRL2024-11-06
4:2 FTSND—Below MRL2024-11-06
PFOSND4Below MRL2024-11-06
NMeFOSAAND—Below MRL2024-11-06
PFHxAND—Below MRL2024-11-06
PFHpAND—Below MRL2024-11-06
PFNAND10Below MRL2024-11-06
PFOAND4Below MRL2024-11-06
PFDAND—Below MRL2024-11-06
PFDoAND—Below MRL2024-11-06
PFBSND—Below MRL2024-11-06
PFHpSND—Below MRL2024-11-06
PFMPAND—Below MRL2024-11-06
PFPeAND—Below MRL2024-11-06
PFMBAND—Below MRL2024-11-06
PFEESAND—Below MRL2024-11-06
PFHxSND10Below MRL2024-11-06
PFUnAND—Below MRL2024-11-06
8:2 FTSND—Below MRL2024-11-06
PFPeSND—Below MRL2024-11-06
NFDHAND—Below MRL2024-11-06
lithiumND—Below MRL2024-11-06
6:2 FTSND—Below MRL2024-11-06
PFBAND—Below MRL2024-11-06
HFPO-DAND10Below MRL2024-11-06
ADONAND—Below MRL2024-11-06
9Cl-PF3ONSND—Below MRL2024-11-06
11Cl-PF3OUdSND—Below MRL2024-11-06
PFBSND—Below MRL2025-02-03
PFPeSND—Below MRL2025-02-03
PFHpAND—Below MRL2025-02-03
NFDHAND—Below MRL2025-02-03
PFHpSND—Below MRL2025-02-03
PFEESAND—Below MRL2025-02-03
NMeFOSAAND—Below MRL2025-02-03
PFTrDAND—Below MRL2025-02-03
PFTAND—Below MRL2025-02-03
PFHxSND10Below MRL2025-02-03
8:2 FTSND—Below MRL2025-02-03
NEtFOSAAND—Below MRL2025-02-03
9Cl-PF3ONSND—Below MRL2025-02-03
lithiumND—Below MRL2025-02-03
PFMBAND—Below MRL2025-02-03
PFPeAND—Below MRL2025-02-03
PFMPAND—Below MRL2025-02-03
4:2 FTSND—Below MRL2025-02-03
PFBAND—Below MRL2025-02-03
6:2 FTSND—Below MRL2025-02-03
ADONAND—Below MRL2025-02-03
PFNAND10Below MRL2025-02-03
11Cl-PF3OUdSND—Below MRL2025-02-03
PFUnAND—Below MRL2025-02-03
PFHxAND—Below MRL2025-02-03
PFDoAND—Below MRL2025-02-03
PFDAND—Below MRL2025-02-03
PFOAND4Below MRL2025-02-03
PFOSND4Below MRL2025-02-03
HFPO-DAND10Below MRL2025-02-03

Next steps