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States → Arizona

UNIVERSITY OF ARIZONA

PWS ID: AZ0420423 · TUCSON, Arizona 85754

PFAS Detected

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

Population Served
50,000
Total Violations
1,168
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
State
Connections
139
County
Pima
School/Daycare
Yes
MCL Violations
1
Monitoring Violations
1,159
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 38 2012
Chlorine MR 29 2015
Total Haloacetic Acids (HAA5) MR 26 2021
TTHM MR 26 2021
1,2-Dichloropropane MR 21 2013
Trichloroethylene MR 21 2013
Tetrachloroethylene MR 21 2013
CHLOROBENZENE MR 21 2013
p-Dichlorobenzene MR 21 2013
Toluene MR 20 2013
DICHLOROMETHANE MR 20 2013
1,2-DIBROMO-3-CHLOROPROPANE MR 20 2013
ETHYLENE DIBROMIDE MR 20 2013
Di(2-ethylhexyl) phthalate MR 20 2017
Styrene MR 19 2013
trans-1,2-Dichloroethylene MR 19 2013
1,1,1-Trichloroethane MR 18 2013
Carbon tetrachloride MR 18 2013
1,1,2-Trichloroethane MR 18 2013
Ethylbenzene MR 18 2013
1,2,4-Trichlorobenzene MR 18 2013
cis-1,2-Dichloroethylene MR 18 2013
Xylenes, Total MR 18 2013
Benzene MR 18 2013
1,1-Dichloroethylene MR 18 2013
1,2-Dichloroethane MR 18 2013
Diquat MR 18 2013
Di(2-ethylhexyl) adipate MR 18 2013
Simazine MR 18 2013
2,4-D MR 18 2013

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 24 of 420 samples detected PFAS.

Contaminant Date Result MRL Status
PFMPA 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 5/9/2024 0.0040 µg/L 0.003 µg/L Detected
PFUnA 5/9/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/9/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFPeA 5/9/2024 0.0054 µg/L 0.003 µg/L Detected
PFMBA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/9/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 5/9/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 5/9/2024 <0.007 µg/L 0.007 µg/L Not Detected
lithium 5/9/2024 34.1000 µg/L 9 µg/L Detected
PFBS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 5/9/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFBS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 5/9/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/9/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/9/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 5/9/2024 <0.002 µg/L 0.002 µg/L Not Detected
lithium 5/9/2024 37.0000 µg/L 9 µg/L Detected
PFHxS 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 5/9/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 5/9/2024 <0.006 µg/L 0.006 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.