Official PFAS Records — TX

Potosi Wsc

PWSID: TX2210008View full utility profile

Source data retrieved: April 20, 2026

UCMR 5 monitoring results are not compliance determinations. Detection does not imply regulatory violation or health risk determination. Methodology

Official Record Summary

Official EPA monitoring records show 87 PFAS results for this water system in the UCMR 5 dataset. 24 results reported as detected above the minimum reporting limit. 63 reported as not detected above MRL.

PFAS Monitoring Records

Analyte	Result	Status	Sample Date	Sample Point	Source
11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
4:2FTS 4:2 Fluorotelomer sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
6:2FTS 6:2 Fluorotelomer sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
8:2FTS 8:2 Fluorotelomer sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid	0.002 µg/L MRL: 0.002	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
DONA 4,8-Dioxa-3H-perfluorononanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
HFPO-DA Hexafluoropropylene oxide dimer acid	0.005 µg/L MRL: 0.005	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
NEtFOSAA N-Ethyl perfluorooctane sulfonamido acetic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
NFDHA Nonafluoro-3,6-dioxaheptanoic acid	0.02 µg/L MRL: 0.02	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
NMeFOSAA N-Methyl perfluorooctane sulfonamido acetic acid	0.006 µg/L MRL: 0.006	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFBA Perfluorobutanoic acid	0.0102 µg/L MRL: 0.005	Official detection	Jul 23, 2025	EP001	EPA UCMR 5
PFBS Perfluorobutane sulfonic acid	0.0061 µg/L MRL: 0.003	Official detection	Jul 23, 2025	EP001	EPA UCMR 5
PFDA Perfluorodecanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFDoA Perfluorododecanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFEESA Perfluoro(2-ethoxyethane)sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFHpA Perfluoroheptanoic acid	0.0067 µg/L MRL: 0.003	Official detection	Jul 23, 2025	EP001	EPA UCMR 5
PFHpS Perfluoroheptane sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFHxA Perfluorohexanoic acid	0.0142 µg/L MRL: 0.003	Official detection	Jul 23, 2025	EP001	EPA UCMR 5
PFHxS Perfluorohexane sulfonic acid	0.0156 µg/L MRL: 0.003	Official detection	Jul 23, 2025	EP001	EPA UCMR 5
PFMBA Perfluoro-4-methoxybutanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFMPA Perfluoro-3-methoxypropanoic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFNA Perfluorononanoic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFOA Perfluorooctanoic acid	0.0056 µg/L MRL: 0.004	Official detection	Jul 23, 2025	EP001	EPA UCMR 5
PFOS Perfluorooctane sulfonic acid	0.0204 µg/L MRL: 0.004	Official detection	Jul 23, 2025	EP001	EPA UCMR 5
PFPeA Perfluoropentanoic acid	0.0105 µg/L MRL: 0.003	Official detection	Jul 23, 2025	EP001	EPA UCMR 5
PFPeS Perfluoropentane sulfonic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFTeDA Perfluorotetradecanoic acid	0.008 µg/L MRL: 0.008	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFTrDA Perfluorotridecanoic acid	0.007 µg/L MRL: 0.007	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
PFUnA Perfluoroundecanoic acid	0.002 µg/L MRL: 0.002	Official non-detect	Jul 23, 2025	EP001	EPA UCMR 5
11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
4:2FTS 4:2 Fluorotelomer sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
6:2FTS 6:2 Fluorotelomer sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
8:2FTS 8:2 Fluorotelomer sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid	0.002 µg/L MRL: 0.002	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
DONA 4,8-Dioxa-3H-perfluorononanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
HFPO-DA Hexafluoropropylene oxide dimer acid	0.005 µg/L MRL: 0.005	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
NFDHA Nonafluoro-3,6-dioxaheptanoic acid	0.02 µg/L MRL: 0.02	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFBA Perfluorobutanoic acid	0.022 µg/L MRL: 0.005	Official detection	Jun 17, 2025	EP001	EPA UCMR 5
PFBS Perfluorobutane sulfonic acid	0.0053 µg/L MRL: 0.003	Official detection	Jun 17, 2025	EP001	EPA UCMR 5
PFDA Perfluorodecanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFDoA Perfluorododecanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFEESA Perfluoro(2-ethoxyethane)sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFHpA Perfluoroheptanoic acid	0.0087 µg/L MRL: 0.003	Official detection	Jun 17, 2025	EP001	EPA UCMR 5
PFHpS Perfluoroheptane sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFHxA Perfluorohexanoic acid	0.014 µg/L MRL: 0.003	Official detection	Jun 17, 2025	EP001	EPA UCMR 5
PFHxS Perfluorohexane sulfonic acid	0.019 µg/L MRL: 0.003	Official detection	Jun 17, 2025	EP001	EPA UCMR 5
PFMBA Perfluoro-4-methoxybutanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFMPA Perfluoro-3-methoxypropanoic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFNA Perfluorononanoic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFOA Perfluorooctanoic acid	0.0057 µg/L MRL: 0.004	Official detection	Jun 17, 2025	EP001	EPA UCMR 5
PFOS Perfluorooctane sulfonic acid	0.021 µg/L MRL: 0.004	Official detection	Jun 17, 2025	EP001	EPA UCMR 5
PFPeA Perfluoropentanoic acid	0.013 µg/L MRL: 0.003	Official detection	Jun 17, 2025	EP001	EPA UCMR 5
PFPeS Perfluoropentane sulfonic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
PFUnA Perfluoroundecanoic acid	0.002 µg/L MRL: 0.002	Official non-detect	Jun 17, 2025	EP001	EPA UCMR 5
NEtFOSAA N-Ethyl perfluorooctane sulfonamido acetic acid	0.005 µg/L MRL: 0.005	Official non-detect	Apr 16, 2025	EP001	EPA UCMR 5
NMeFOSAA N-Methyl perfluorooctane sulfonamido acetic acid	0.006 µg/L MRL: 0.006	Official non-detect	Apr 16, 2025	EP001	EPA UCMR 5
PFTeDA Perfluorotetradecanoic acid	0.008 µg/L MRL: 0.008	Official non-detect	Apr 16, 2025	EP001	EPA UCMR 5
PFTrDA Perfluorotridecanoic acid	0.007 µg/L MRL: 0.007	Official non-detect	Apr 16, 2025	EP001	EPA UCMR 5
11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
4:2FTS 4:2 Fluorotelomer sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
6:2FTS 6:2 Fluorotelomer sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
8:2FTS 8:2 Fluorotelomer sulfonic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid	0.002 µg/L MRL: 0.002	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
DONA 4,8-Dioxa-3H-perfluorononanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
HFPO-DA Hexafluoropropylene oxide dimer acid	0.005 µg/L MRL: 0.005	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
NEtFOSAA N-Ethyl perfluorooctane sulfonamido acetic acid	0.005 µg/L MRL: 0.005	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
NFDHA Nonafluoro-3,6-dioxaheptanoic acid	0.02 µg/L MRL: 0.02	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
NMeFOSAA N-Methyl perfluorooctane sulfonamido acetic acid	0.006 µg/L MRL: 0.006	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFBA Perfluorobutanoic acid	0.0162 µg/L MRL: 0.005	Official detection	Jan 22, 2025	EP001	EPA UCMR 5
PFBS Perfluorobutane sulfonic acid	0.0055 µg/L MRL: 0.003	Official detection	Jan 22, 2025	EP001	EPA UCMR 5
PFDA Perfluorodecanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFDoA Perfluorododecanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFEESA Perfluoro(2-ethoxyethane)sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFHpA Perfluoroheptanoic acid	0.0077 µg/L MRL: 0.003	Official detection	Jan 22, 2025	EP001	EPA UCMR 5
PFHpS Perfluoroheptane sulfonic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFHxA Perfluorohexanoic acid	0.0157 µg/L MRL: 0.003	Official detection	Jan 22, 2025	EP001	EPA UCMR 5
PFHxS Perfluorohexane sulfonic acid	0.0199 µg/L MRL: 0.003	Official detection	Jan 22, 2025	EP001	EPA UCMR 5
PFMBA Perfluoro-4-methoxybutanoic acid	0.003 µg/L MRL: 0.003	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFMPA Perfluoro-3-methoxypropanoic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFNA Perfluorononanoic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFOA Perfluorooctanoic acid	0.0067 µg/L MRL: 0.004	Official detection	Jan 22, 2025	EP001	EPA UCMR 5
PFOS Perfluorooctane sulfonic acid	0.0199 µg/L MRL: 0.004	Official detection	Jan 22, 2025	EP001	EPA UCMR 5
PFPeA Perfluoropentanoic acid	0.0136 µg/L MRL: 0.003	Official detection	Jan 22, 2025	EP001	EPA UCMR 5
PFPeS Perfluoropentane sulfonic acid	0.004 µg/L MRL: 0.004	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFTeDA Perfluorotetradecanoic acid	0.008 µg/L MRL: 0.008	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFTrDA Perfluorotridecanoic acid	0.007 µg/L MRL: 0.007	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5
PFUnA Perfluoroundecanoic acid	0.002 µg/L MRL: 0.002	Official non-detect	Jan 22, 2025	EP001	EPA UCMR 5

Source: EPA UCMR 5 Occurrence Data · Retrieved April 20, 2026

Water System

PWSID

TX2210008

State

Texas

Population served

7,413

System type

Surface water

Full utility profile

PFAS Record Summary

Total records87

Official detections24

Official non-detects63

Monitoring results from EPA UCMR 5 are not compliance determinations.

Official Sources

EPA ECHO Facility Report UCMR 5 Data Finder EPA PFAS Rule

This page shows only official government PFAS records. No risk scores, safety judgments, or inferred compliance determinations are generated by this system. Read methodology

Texas PFAS records Methodology