PlainWater
States → California

SAN ANTONIO WATER COMPANY

PWS ID: CA3610085 · UPLAND, California 91786

Population Served
3,111
Total Violations
7
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
1,219
County
San Bernardino
School/Daycare
No
MCL Violations
5
Monitoring Violations
2
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 5 2015
Lead and Copper Rule MR 2 1993

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
PFHxA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 4/15/2025 <0.02 µg/L 0.02 µg/L Not Detected
4:2 FTS 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 4/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFDA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
lithium 4/15/2025 <9 µg/L 9 µg/L Not Detected
ADONA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 4/15/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 4/15/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 4/15/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFOA 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDoA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 4/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 4/15/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 4/15/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 4/15/2025 <9 µg/L 9 µg/L Not Detected
PFNA 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 4/15/2025 <0.006 µg/L 0.006 µg/L Not Detected
HFPO-DA 4/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 4/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 4/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.