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States → Oklahoma

MARSHALL COUNTY RURAL WATER DISTRICT #2

PWS ID: OK1010848 · MADILL, Oklahoma 73446

Population Served
17,587
Total Violations
206
Health-Based Violations
186
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
7,146
County
Marshall
School/Daycare
No
MCL Violations
162
Monitoring Violations
20
Treatment Tech Violations
24

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 123 2025
Total Haloacetic Acids (HAA5) MCL 32 2019
CARBON, TOTAL TT 20 2006
Coliform (TCR) MCL 7 2011
Nitrate-Nitrite MR 4 2004
Total Haloacetic Acids (HAA5) MR 4 2008
Interim Enhanced Surface Water Treatment Rule TT 4 2006
Coliform (TCR) MR 4 2011
TTHM MR 4 2008
Combined Radium (-226 and -228) MR 1 2004
Combined Uranium MR 1 2004
Gross Alpha, Excl. Radon and U MR 1 2004
Gross Beta Particle Activity MR 1 2004

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFHxS 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/6/2024 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/6/2024 <0.002 µg/L 0.002 µg/L Not Detected
lithium 8/6/2024 <9 µg/L 9 µg/L Not Detected
PFOS 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 8/6/2024 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 8/6/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFPeS 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 8/6/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/6/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFHxA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 5/5/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFPeA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 5/5/2025 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 5/5/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFMBA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/5/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/5/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFPeS 5/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 5/5/2025 <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.