PlainWater
States → Arizona

SAN LUIS CITY OF

PWS ID: AZ0414005 · SAN LUIS, Arizona 85349

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
39,705
Total Violations
682
Health-Based Violations
14
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
6,100
County
Yuma
School/Daycare
No
MCL Violations
6
Monitoring Violations
638
Treatment Tech Violations
8

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 19 2019
Coliform (TCR) MR 18 2015
Thallium, Total MR 18 2012
ETHYLENE DIBROMIDE MR 15 2006
Lead and Copper Rule MR 14 2024
1,1,1-Trichloroethane MR 12 2003
Antimony, Total MR 12 2003
Endrin MR 11 2006
BHC-GAMMA MR 11 2006
Methoxychlor MR 11 2006
Dalapon MR 11 2006
Toxaphene MR 11 2006
Diquat MR 11 2006
Endothall MR 11 2006
Glyphosate MR 11 2006
Di(2-ethylhexyl) adipate MR 11 2006
OXAMYL MR 11 2006
Simazine MR 11 2006
Di(2-ethylhexyl) phthalate MR 11 2006
Picloram MR 11 2006
Dinoseb MR 11 2006
Hexachlorocyclopentadiene MR 11 2006
Carbofuran MR 11 2006
Atrazine MR 11 2006
LASSO MR 11 2006
Heptachlor MR 11 2006
Heptachlor epoxide MR 11 2006
2,4-D MR 11 2006
2,4,5-TP MR 11 2006
HEXACHLOROBENZENE MR 11 2006

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 12 of 360 samples detected PFAS.

Contaminant Date Result MRL Status
PFBA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
HFPO-DA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 9/25/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFNA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 9/25/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFTA 9/25/2024 <0.008 µg/L 0.008 µg/L Not Detected
NEtFOSAA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/25/2024 100.0000 µg/L 9 µg/L Detected
NMeFOSAA 9/25/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFPeS 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 9/25/2024 <0.008 µg/L 0.008 µg/L Not Detected
4:2 FTS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 9/25/2024 <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.