PlainWater
States → Minnesota

Lake Elmo

PWS ID: MN1820009 · Lake Elmo, Minnesota 55042

PFAS Detected

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

Population Served
10,978
Total Violations
73
Health-Based Violations
39
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
3,540
County
Washington
School/Daycare
No
MCL Violations
39
Monitoring Violations
31
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 39 2015
Coliform (TCR) MR 3 2002
Endrin MR 2 2024
Di(2-ethylhexyl) adipate MR 2 2024
Simazine MR 2 2024
LASSO MR 2 2024
Heptachlor epoxide MR 2 2024
HEXACHLOROBENZENE MR 2 2024
Benzo(a)pyrene MR 2 2024
Chlordane MR 2 2024
BHC-GAMMA MR 2 2024
Heptachlor MR 2 2024
Methoxychlor MR 2 2024
Hexachlorocyclopentadiene MR 2 2024
Atrazine MR 2 2024
Di(2-ethylhexyl) phthalate MR 2 2024

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 10 of 180 samples detected PFAS.

Contaminant Date Result MRL Status
PFHpA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/9/2023 <9 µg/L 9 µg/L Not Detected
PFBA 8/9/2023 0.1000 µg/L 0.005 µg/L Detected
9Cl-PF3ONS 8/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFTrDA 8/9/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 8/9/2023 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 8/9/2023 <0.006 µg/L 0.006 µg/L Not Detected
NFDHA 8/9/2023 <0.02 µg/L 0.02 µg/L Not Detected
NEtFOSAA 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/9/2023 0.0030 µg/L 0.003 µg/L Detected
PFMPA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 8/9/2023 0.1400 µg/L 0.005 µg/L Detected
PFHxS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/9/2023 <9 µg/L 9 µg/L Not Detected
ADONA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/9/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/9/2023 <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.