Guymon

Published drinking-water records and contacts for Guymon. System OK2007003. Review sources and dates; not a real-time water assessment.

System ID: OK2007003
State or territory: OK
Published population served: 11442
System type (source code): CWS

Published records and dates

PFAS / lithium (EPA UCMR 5): 360 — 2023-03-06 – 2023-09-04
Lead and copper monitoring summaries: 18 — 1992-07-01 – 2025-12-31
Oklahoma selected chemical sample panels: 22 — 2026-03-10 – 2026-08-11

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
Substance	Published result	Reporting limit	Sample date	Sampling location
11Cl-PF3OUdS	< 0.005 µg/L	0.005 µg/L	2023-09-04	Cl2 Station - Northeast Station / CL003
4:2 FTS	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Northeast Station / CL003
6:2 FTS	< 0.005 µg/L	0.005 µg/L	2023-09-04	Cl2 Station - Northwest Station / CL006
8:2 FTS	< 0.005 µg/L	0.005 µg/L	2023-09-04	CL2 Station- Well 20 / CLOO7
9Cl-PF3ONS	< 0.002 µg/L	0.002 µg/L	2023-09-04	CL2 Station-Cactus T Station / CL008
ADONA	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Well 18 / CL001
HFPO-DA	< 0.005 µg/L	0.005 µg/L	2023-09-04	Cl2 Station - Northeast Station / CL003
NEtFOSAA	< 0.005 µg/L	0.005 µg/L	2023-09-04	Cl2 Station - Well 18 / CL001
NFDHA	< 0.02 µg/L	0.02 µg/L	2023-09-04	Cl2 Station - Northeast Station / CL003
NMeFOSAA	< 0.006 µg/L	0.006 µg/L	2023-09-04	CL2 Station- Well 20 / CLOO7
PFBA	< 0.005 µg/L	0.005 µg/L	2023-09-04	CL2 Station-Cactus T Station / CL008
PFBS	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - North Station / CL002
PFDA	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Well 18 / CL001
PFDoA	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Northeast Station / CL003
PFEESA	< 0.003 µg/L	0.003 µg/L	2023-09-04	CL2 Station- Well 20 / CLOO7
PFHpA	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Well 18 / CL001
PFHpS	< 0.003 µg/L	0.003 µg/L	2023-09-04	CL2 Station- Well 20 / CLOO7
PFHxA	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Northwest Station / CL006
PFHxS	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Northwest Station / CL006
PFMBA	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Well 18 / CL001
PFMPA	< 0.004 µg/L	0.004 µg/L	2023-09-04	Cl2 Station - Northeast Station / CL003
PFNA	< 0.004 µg/L	0.004 µg/L	2023-09-04	CL2 Station-Cactus T Station / CL008
PFOA	< 0.004 µg/L	0.004 µg/L	2023-09-04	CL2 Station-Cactus T Station / CL008
PFOS	< 0.004 µg/L	0.004 µg/L	2023-09-04	CL2 Station- Well 20 / CLOO7
PFPeA	< 0.003 µg/L	0.003 µg/L	2023-09-04	Cl2 Station - Well 18 / CL001
PFPeS	< 0.004 µg/L	0.004 µg/L	2023-09-04	CL2 Station- Well 20 / CLOO7
PFTA	< 0.008 µg/L	0.008 µg/L	2023-09-04	CL2 Station-Cactus T Station / CL008
PFTrDA	< 0.007 µg/L	0.007 µg/L	2023-09-04	Cl2 Station - Well 18 / CL001
PFUnA	< 0.002 µg/L	0.002 µg/L	2023-09-04	Cl2 Station - North Station / CL002
lithium	116 µg/L	9 µg/L	2023-09-04	Cl2 Station - Well 18 / CL001

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
Substance	Monitoring period	Source quarter
Lead (PB90)	2023-01-01 – 2025-12-31	2026Q3
Lead (PB90)	2020-01-01 – 2022-12-31	2026Q3
Lead (PB90)	2017-01-01 – 2019-12-31	2026Q3
Lead (PB90)	2015-01-01 – 2017-12-31	2026Q3
Lead (PB90)	2013-01-01 – 2013-06-30	2026Q3
Lead (PB90)	2012-07-01 – 2012-12-31	2026Q3
Lead (PB90)	2011-07-01 – 2011-12-31	2026Q3
Lead (PB90)	2011-01-01 – 2011-06-30	2026Q3

Twelve most recent imported state laboratory records
Substance	Published result	Sample date	Location / source
NITRATE-NITRITE	7.900 mg/L	2026-08-11	CL006 / Oklahoma selected chemical sample panels
NITRATE-NITRITE	7.810 mg/L	2026-08-11	CL007 / Oklahoma selected chemical sample panels
NITRATE-NITRITE	7.700 mg/L	2026-05-12	CL006 / Oklahoma selected chemical sample panels
NITRATE-NITRITE	7.260 mg/L	2026-05-12	CL007 / Oklahoma selected chemical sample panels
NITRATE-NITRITE	3.840 mg/L	2026-03-23	CL002 / Oklahoma selected chemical sample panels
ARSENIC	0.0024 mg/L	2026-03-23	CL003 / Oklahoma selected chemical sample panels
NITRATE-NITRITE	2.860 mg/L	2026-03-23	CL003 / Oklahoma selected chemical sample panels
NITRATE-NITRITE	4.240 mg/L	2026-03-23	CL004 / Oklahoma selected chemical sample panels
NITRATE-NITRITE	8.550 mg/L	2026-03-23	CL006 / Oklahoma selected chemical sample panels
ARSENIC	0.0024 mg/L	2026-03-23	CL007 / Oklahoma selected chemical sample panels
NITRATE-NITRITE	7.000 mg/L	2026-03-23	CL007 / Oklahoma selected chemical sample panels
ARSENIC	0.0044 mg/L	2026-03-23	CL008 / Oklahoma selected chemical sample panels

State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.

Download state records with source notes (CSV)

Published compliance history

14 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / record	Period	Recorded status	Health-based (EPA classification)	Source quarter
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2025-01-01 – 2025-12-31	Resolved	Yes	2026Q3
Nitrate Rule / Monitoring, Regular	2023-01-01 – 2023-12-31	Resolved	No	2026Q3
Nitrate Rule / Monitoring, Regular	2023-01-01 – 2023-12-31	Resolved	No	2026Q3
Nitrate Rule / Monitoring, Regular	2023-01-01 – 2023-12-31	Resolved	No	2026Q3
Nitrate Rule / Monitoring, Regular	2023-01-01 – 2023-12-31	Resolved	No	2026Q3
Nitrate Rule / Monitoring, Regular	2023-01-01 – 2023-12-31	Resolved	No	2026Q3
Arsenic Rule / Monitoring, Regular	2023-01-01 – 2025-12-31	Resolved	No	2026Q3
Arsenic Rule / Monitoring, Regular	2023-01-01 – 2025-12-31	Resolved	No	2026Q3
Arsenic Rule / Monitoring, Regular	2023-01-01 – 2025-12-31	Resolved	No	2026Q3
Revised Total Coliform Rule / Monitoring, Routine (RTCR)	2019-05-01 – 2019-05-31	Resolved	No	2026Q3
Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)	2019-04-01 – 2019-06-30	Resolved	No	2026Q3
Total Coliform Rule / Monitoring, Routine Minor (TCR)	1999-07-01 – 1999-07-31	Archived	No	2026Q3
Inorganic Chemicals / Maximum Contaminant Level Violation, Average	1981-12-01 – 1984-11-30	Archived	Yes	2026Q3
Inorganic Chemicals / Maximum Contaminant Level Violation, Average	1979-04-25 – 1980-10-24	Archived	Yes	2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
Oklahoma selected chemical sample panels — last successful check: 2026-10-16

Administrative contact (EPA filing)

Guymon: 580-338-0137

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records