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FREDERICK

PWS ID: OK1011401 · FREDERICK, Oklahoma 73542

FREDERICK serves 3,940 people in FREDERICK, Oklahoma using Surface Water water sources. It has 797 recorded EPA violations, including 710 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (2 compounds found).

Water Quality Snapshot: FREDERICK

FREDERICK is a local-owned community water system that delivers drinking water to 3,940 residents in FREDERICK, Oklahoma (Tillman County) through 1,915 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 797 total violations for this system , of which 710 (89%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 79 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is TTHM, recorded in 400 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 2 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.0125 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Oklahoma, EPA tracks 1,262 public water systems serving 3,699,452 people, with 336,706 cumulative violations and 113,804 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 266.8 violations. FREDERICK's 797 violations sit above the Oklahoma average. Statewide, 101 of 166 UCMR5-tested systems have reported PFAS detections (60.8%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

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

Population Served
3,940
Total Violations
797
Health-Based Violations
710
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,915
County
Tillman
School/Daycare
No
MCL Violations
409
Monitoring Violations
79
Treatment Tech Violations
301

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 400 2024
CARBON, TOTAL TT 273 2023
CARBON, TOTAL MR 47 2013
Interim Enhanced Surface Water Treatment Rule TT 18 2010
Surface Water Treatment Rule TT 9 2003
Coliform (TCR) MR 8 2013
Lead and Copper Rule MR 8 2010
Chlorite MR 8 2015
Chlorite MCL 8 2018
TTHM MR 5 2015
Total Haloacetic Acids (HAA5) MR 3 2013
LEAD AND COPPER RULE REVISIONS TT 1 2024
LEAD AND COPPER RULE REVISIONS RPT 1 2024
Coliform (TCR) MCL 1 1998

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 95 samples detected PFAS.

Contaminant Date Result MRL Status
lithium 9/12/2023 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 9/12/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 9/12/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 9/12/2023 <0.008 µg/L 0.008 µg/L Not Detected
NEtFOSAA 9/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/14/2023 <0.002 µg/L 0.002 µg/L Not Detected
9Cl-PF3ONS 8/14/2023 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 8/14/2023 0.0095 µg/L 0.005 µg/L Detected
6:2 FTS 8/14/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/14/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/14/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/14/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/14/2023 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 8/14/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/14/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/14/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/14/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/14/2023 0.0030 µg/L 0.003 µg/L Detected
PFHpA 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/14/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 8/14/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 6/21/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 6/21/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 6/21/2023 <0.008 µg/L 0.008 µg/L Not Detected
lithium 6/21/2023 <9 µg/L 9 µg/L Not Detected
NEtFOSAA 6/21/2023 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 4/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 4/26/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 4/26/2023 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 4/26/2023 <0.006 µg/L 0.006 µg/L Not Detected
lithium 3/14/2023 <9 µg/L 9 µg/L Not Detected
PFTA 12/4/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFMPA 12/4/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 12/4/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 12/4/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 12/4/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 12/4/2023 <0.02 µg/L 0.02 µg/L Not Detected
8:2 FTS 12/4/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 12/4/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 12/4/2023 <9 µg/L 9 µg/L Not Detected
PFTrDA 12/4/2023 <0.007 µg/L 0.007 µg/L Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for FREDERICK.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID OK1011401 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Oklahoma Drinking Water Authority

Oklahoma's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find OK regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 TTHM MCL 400 SDWIS / OK1011401 / 2950
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / OK1011401 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / OK1011401 / 5200
2023 CARBON, TOTAL TT 273 SDWIS / OK1011401 / 2920
2018 Chlorite MCL 8 SDWIS / OK1011401 / 1009
2015 Chlorite MR 8 SDWIS / OK1011401 / 1009
2015 TTHM MR 5 SDWIS / OK1011401 / 2950
2013 CARBON, TOTAL MR 47 SDWIS / OK1011401 / 2920
2013 Coliform (TCR) MR 8 SDWIS / OK1011401 / 3100
2013 Total Haloacetic Acids (HAA5) MR 3 SDWIS / OK1011401 / 2456
2010 Interim Enhanced Surface Water Treatment Rule TT 18 SDWIS / OK1011401 / 0300
2010 Lead and Copper Rule MR 8 SDWIS / OK1011401 / 5000
2003 Surface Water Treatment Rule TT 9 SDWIS / OK1011401 / 0200
1998 Coliform (TCR) MCL 1 SDWIS / OK1011401 / 3100

How FREDERICK Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric FREDERICK Oklahoma avg Federal benchmark
Total violations 797 266.8 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 710 90.2 Indicates a contaminant exceeded a federal MCL
PFAS detection 2 compounds 60.8% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,940 2,931 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,262 regulated public water systems in Oklahoma.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is FREDERICK water safe to drink? ▼
FREDERICK (PWS ID: OK1011401) has 797 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 2 PFAS compounds found. This system serves 3,940 people using Surface Water sources.
How many people does FREDERICK serve? ▼
FREDERICK serves 3,940 people in FREDERICK, Oklahoma. It is a Local-owned system using Surface Water water sources with 1,915 service connections.
What type of violations does FREDERICK have? ▼
FREDERICK has 797 total violations: 710 health-based violations (MCL exceedances or treatment failures), 79 monitoring/reporting violations, and 301 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in FREDERICK water? ▼
Yes. UCMR5 testing detected 2 PFAS compounds in FREDERICK's water supply: PFBA, PFHxS. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does FREDERICK use? ▼
FREDERICK uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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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.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial