Water Quality in PARK HILL, OK (74451)

EPA violation data for public water systems serving ZIP code 74451.

1,269

Total Violations

35

Health-Based

1,234

Monitoring / Reporting

1,252

Resolved

What does this mean?

1,252 of 1,269 violations have been resolved. 35 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 1,234 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.

Water systems: 24 Population served: 1,565

Violations Detail (1269 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
ChlorineMonitoringN/AN/AJul 31, 2025ResolvedEye and nose irritation; stomach discomfort
ChlorineMonitoringN/AN/AJul 31, 2025ResolvedEye and nose irritation; stomach discomfort
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Lead and Copper RuleMonitoringN/AN/AJun 30, 2025ActiveN/A
Lead and Copper RuleMonitoringN/AN/AJun 30, 2025ActiveN/A
Revised Total Coliform RuleMonitoringN/AN/AJun 30, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJun 30, 2025ResolvedN/A
TTHMMonitoringN/AN/AJun 30, 2025ResolvedN/A
TTHMMonitoringN/AN/AJun 30, 2025ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(160)

Revised Total Coliform Rule

3A

Jul 31Resolved

Chlorine

27

Jul 31Resolved

Chlorine

27

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Lead and Copper Rule

52

Jun 30Active

Lead and Copper Rule

52

Jun 30Active

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

TTHM

27

Jun 30Resolved

TTHM

27

Jun 30Resolved

Total Haloacetic Acids (HAA5)

27

Jun 30Resolved

Total Haloacetic Acids (HAA5)

27

Jun 30Resolved

Chlorine

27

Jun 30Resolved

Chlorine

27

Jun 30Resolved

Chlorine

27

Jun 30Resolved

Chlorine

27

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

May 31Resolved

Revised Total Coliform Rule

3A

May 31Resolved

Chlorine

27

May 31Resolved

Chlorine

27

May 31Resolved

E. COLI

34

May 28Active

E. COLI

34

May 28Active

Chlorine

27

Apr 30Resolved

Revised Total Coliform Rule

3A

Apr 30Resolved

Revised Total Coliform Rule

3A

Apr 30Resolved

Chlorine

27

Apr 30Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

TTHM

27

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Total Haloacetic Acids (HAA5)

27

Mar 31Resolved

TTHM

27

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Total Haloacetic Acids (HAA5)

27

Mar 31Resolved

Pentachlorophenol

03

Mar 31Resolved

Carbofuran

03

Mar 31Resolved

Carbofuran

03

Mar 31Resolved

Total Polychlorinated Biphenyls (PCB)

03

Mar 31Resolved

Total Polychlorinated Biphenyls (PCB)

03

Mar 31Resolved

Atrazine

03

Mar 31Resolved

Atrazine

03

Mar 31Resolved

Atrazine

03

Mar 31Resolved

Atrazine

03

Mar 31Resolved

HEXACHLOROBENZENE

03

Mar 31Resolved

HEXACHLOROBENZENE

03

Mar 31Resolved

ETHYLENE DIBROMIDE

03

Mar 31Resolved

ETHYLENE DIBROMIDE

03

Mar 31Resolved

OXAMYL

03

Mar 31Resolved

OXAMYL

03

Mar 31Resolved

ETHYLENE DIBROMIDE

03

Mar 31Resolved

ETHYLENE DIBROMIDE

03

Mar 31Resolved

Hexachlorocyclopentadiene

03

Mar 31Resolved

Di(2-ethylhexyl) phthalate

03

Mar 31Resolved

Di(2-ethylhexyl) phthalate

03

Mar 31Resolved

Hexachlorocyclopentadiene

03

Mar 31Resolved

Pentachlorophenol

03

Mar 31Resolved

Endrin

03

Mar 31Resolved

Endrin

03

Mar 31Resolved

BHC-GAMMA

03

Mar 31Resolved

BHC-GAMMA

03

Mar 31Resolved

Toxaphene

03

Mar 31Resolved

Toxaphene

03

Mar 31Resolved

Dalapon

03

Mar 31Resolved

Dalapon

03

Mar 31Resolved

Endothall

03

Mar 31Resolved

Endothall

03

Mar 31Resolved

Glyphosate

03

Mar 31Resolved

Glyphosate

03

Mar 31Resolved

Di(2-ethylhexyl) adipate

03

Mar 31Resolved

Di(2-ethylhexyl) adipate

03

Mar 31Resolved

Simazine

03

Mar 31Resolved

Simazine

03

Mar 31Resolved

Di(2-ethylhexyl) phthalate

03

Mar 31Resolved

Di(2-ethylhexyl) phthalate

03

Mar 31Resolved

Picloram

03

Mar 31Resolved

Picloram

03

Mar 31Resolved

Dinoseb

03

Mar 31Resolved

Dinoseb

03

Mar 31Resolved

Heptachlor epoxide

03

Mar 31Resolved

Heptachlor epoxide

03

Mar 31Resolved

2,4-D

03

Mar 31Resolved

2,4-D

03

Mar 31Resolved

2,4,5-TP

03

Mar 31Resolved

2,4,5-TP

03

Mar 31Resolved

Total Polychlorinated Biphenyls (PCB)

03

Mar 31Resolved

Total Polychlorinated Biphenyls (PCB)

03

Mar 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

03

Mar 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

03

Mar 31Resolved

Chlordane

03

Mar 31Resolved

Chlordane

03

Mar 31Resolved

Endrin

03

Mar 31Resolved

Endrin

03

Mar 31Resolved

Toxaphene

03

Mar 31Resolved

Toxaphene

03

Mar 31Resolved

Dalapon

03

Mar 31Resolved

Dalapon

03

Mar 31Resolved

Diquat

03

Mar 31Resolved

Diquat

03

Mar 31Resolved

Glyphosate

03

Mar 31Resolved

Glyphosate

03

Mar 31Resolved

Simazine

03

Mar 31Resolved

Simazine

03

Mar 31Resolved

Picloram

03

Mar 31Resolved

Picloram

03

Mar 31Resolved

Dinoseb

03

Mar 31Resolved

Dinoseb

03

Mar 31Resolved

LASSO

03

Mar 31Resolved

LASSO

03

Mar 31Resolved

Heptachlor epoxide

03

Mar 31Resolved

Heptachlor epoxide

03

Mar 31Resolved

2,4,5-TP

03

Mar 31Resolved

2,4,5-TP

03

Mar 31Resolved

Benzo(a)pyrene

03

Mar 31Resolved

Benzo(a)pyrene

03

Mar 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

03

Mar 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

03

Mar 31Resolved

Chlordane

03

Mar 31Resolved

Chlordane

03

Mar 31Resolved

Diquat

03

Mar 31Resolved

Benzo(a)pyrene

03

Mar 31Resolved

Diquat

03

Mar 31Resolved

Carbofuran

03

Mar 31Resolved

Carbofuran

03

Mar 31Resolved

Heptachlor

03

Mar 31Resolved

Heptachlor

03

Mar 31Resolved

Di(2-ethylhexyl) adipate

03

Mar 31Resolved

Di(2-ethylhexyl) adipate

03

Mar 31Resolved

Pentachlorophenol

03

Mar 31Resolved

Pentachlorophenol

03

Mar 31Resolved

Heptachlor

03

Mar 31Resolved

Heptachlor

03

Mar 31Resolved

HEXACHLOROBENZENE

03

Mar 31Resolved

HEXACHLOROBENZENE

03

Mar 31Resolved

BHC-GAMMA

03

Mar 31Resolved

BHC-GAMMA

03

Mar 31Resolved

Endothall

03

Mar 31Resolved

OXAMYL

03

Mar 31Resolved

OXAMYL

03

Mar 31Resolved

2,4-D

03

Mar 31Resolved

2,4-D

03

Mar 31Resolved

LASSO

03

Mar 31Resolved

LASSO

03

Mar 31Resolved

Hexachlorocyclopentadiene

03

Mar 31Resolved

Methoxychlor

03

Mar 31Resolved

Methoxychlor

03

Mar 31Resolved

Hexachlorocyclopentadiene

03

Mar 31Resolved

Methoxychlor

03

Mar 31Resolved

Methoxychlor

03

Mar 31Resolved

Benzo(a)pyrene

03

Mar 31Resolved

Endothall

03

Mar 31Resolved

Chlorine

27

Jan 31Resolved

Chlorine

27

Jan 31Resolved

Chlorine

27

Jan 31Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

2024(197)

TTHM

27

Dec 31Resolved

TTHM

27

Dec 31Resolved

Total Haloacetic Acids (HAA5)

27

Dec 31Resolved

Chlorine

27

Dec 31Resolved

Lead and Copper Rule

56

Dec 31Active

Lead and Copper Rule

56

Dec 31Active

Chlorine

27

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Total Haloacetic Acids (HAA5)

27

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Chlorine

27

Dec 31Resolved

Chlorine

27

Dec 31Resolved

Chlorine

27

Dec 31Resolved

Total Haloacetic Acids (HAA5)

27

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Lead and Copper Rule

52

Dec 31Active

Lead and Copper Rule

52

Dec 31Active

TTHM

27

Dec 31Resolved

TTHM

27

Dec 31Resolved

Total Haloacetic Acids (HAA5)

27

Dec 31Resolved

Dinoseb

03

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

03

Dec 31Resolved

OXAMYL

03

Dec 31Resolved

OXAMYL

03

Dec 31Resolved

ETHYLENE DIBROMIDE

03

Dec 31Resolved

ETHYLENE DIBROMIDE

03

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

03

Dec 31Resolved

Simazine

03

Dec 31Resolved

Dinoseb

03

Dec 31Resolved

Dalapon

03

Dec 31Resolved

Dalapon

03

Dec 31Resolved

Methoxychlor

03

Dec 31Resolved

Methoxychlor

03

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

03

Dec 31Resolved

Dalapon

03

Dec 31Resolved

Dalapon

03

Dec 31Resolved

ETHYLENE DIBROMIDE

03

Dec 31Resolved

ETHYLENE DIBROMIDE

03

Dec 31Resolved

Chlordane

03

Dec 31Resolved

Chlordane

03

Dec 31Resolved

Dinoseb

03

Dec 31Resolved

Dinoseb

03

Dec 31Resolved

2,4-D

03

Dec 31Resolved

2,4-D

03

Dec 31Resolved

Atrazine

03

Dec 31Resolved

Atrazine

03

Dec 31Resolved

Atrazine

03

Dec 31Resolved

Atrazine

03

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

03

Dec 31Resolved

Endothall

03

Dec 31Resolved

Endothall

03

Dec 31Resolved

Benzo(a)pyrene

03

Dec 31Resolved

Benzo(a)pyrene

03

Dec 31Resolved

Simazine

03

Dec 31Resolved

Toxaphene

03

Dec 31Resolved

Toxaphene

03

Dec 31Resolved

Diquat

03

Dec 31Resolved

Diquat

03

Dec 31Resolved

Glyphosate

03

Dec 31Resolved

Glyphosate

03

Dec 31Resolved

Di(2-ethylhexyl) adipate

03

Dec 31Resolved

Di(2-ethylhexyl) adipate

03

Dec 31Resolved

Picloram

03

Dec 31Resolved

Picloram

03

Dec 31Resolved

Hexachlorocyclopentadiene

03

Dec 31Resolved

Hexachlorocyclopentadiene

03

Dec 31Resolved

Carbofuran

03

Dec 31Resolved

Carbofuran

03

Dec 31Resolved

LASSO

03

Dec 31Resolved

LASSO

03

Dec 31Resolved

Heptachlor

03

Dec 31Resolved

Heptachlor

03

Dec 31Resolved

Heptachlor epoxide

03

Dec 31Resolved

Heptachlor epoxide

03

Dec 31Resolved

2,4-D

03

Dec 31Resolved

2,4-D

03

Dec 31Resolved

HEXACHLOROBENZENE

03

Dec 31Resolved

HEXACHLOROBENZENE

03

Dec 31Resolved

Benzo(a)pyrene

03

Dec 31Resolved

Benzo(a)pyrene

03

Dec 31Resolved

BHC-GAMMA

03

Dec 31Resolved

BHC-GAMMA

03

Dec 31Resolved

Methoxychlor

03

Dec 31Resolved

Methoxychlor

03

Dec 31Resolved

Toxaphene

03

Dec 31Resolved

Toxaphene

03

Dec 31Resolved

Glyphosate

03

Dec 31Resolved

Glyphosate

03

Dec 31Resolved

Di(2-ethylhexyl) adipate

03

Dec 31Resolved

Di(2-ethylhexyl) adipate

03

Dec 31Resolved

Simazine

03

Dec 31Resolved

Simazine

03

Dec 31Resolved

Hexachlorocyclopentadiene

03

Dec 31Resolved

Hexachlorocyclopentadiene

03

Dec 31Resolved

Carbofuran

03

Dec 31Resolved

Carbofuran

03

Dec 31Resolved

LASSO

03

Dec 31Resolved

LASSO

03

Dec 31Resolved

Heptachlor

03

Dec 31Resolved

Heptachlor

03

Dec 31Resolved

Heptachlor epoxide

03

Dec 31Resolved

Heptachlor epoxide

03

Dec 31Resolved

Pentachlorophenol

03

Dec 31Resolved

Pentachlorophenol

03

Dec 31Resolved

Endothall

03

Dec 31Resolved

Endrin

03

Dec 31Resolved

Pentachlorophenol

03

Dec 31Resolved

OXAMYL

03

Dec 31Resolved

Di(2-ethylhexyl) phthalate

03

Dec 31Resolved

Di(2-ethylhexyl) phthalate

03

Dec 31Resolved

Diquat

03

Dec 31Resolved

Diquat

03

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

03

Dec 31Resolved

Picloram

03

Dec 31Resolved

HEXACHLOROBENZENE

03

Dec 31Resolved

BHC-GAMMA

03

Dec 31Resolved

BHC-GAMMA

03

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

03

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

03

Dec 31Resolved

Chlordane

03

Dec 31Resolved

Chlordane

03

Dec 31Resolved

Di(2-ethylhexyl) phthalate

03

Dec 31Resolved

Di(2-ethylhexyl) phthalate

03

Dec 31Resolved

2,4,5-TP

03

Dec 31Resolved

2,4,5-TP

03

Dec 31Resolved

Pentachlorophenol

03

Dec 31Resolved

2,4,5-TP

03

Dec 31Resolved

Picloram

03

Dec 31Resolved

HEXACHLOROBENZENE

03

Dec 31Resolved

Endothall

03

Dec 31Resolved

2,4,5-TP

03

Dec 31Resolved

OXAMYL

03

Dec 31Resolved

Endrin

03

Dec 31Resolved

Endrin

03

Dec 31Resolved

Endrin

03

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

03

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Chlorine

27

Nov 30Resolved

Chlorine

27

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

Chlorine

27

Nov 30Resolved

Revised Total Coliform Rule

3A

Oct 31Resolved

Chlorine

27

Oct 31Resolved

Chlorine

27

Oct 31Resolved

Revised Total Coliform Rule

3A

Oct 31Resolved

Revised Total Coliform Rule

3A

Oct 31Resolved

Chlorine

27

Oct 31Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Active

Total Haloacetic Acids (HAA5)

27

Sep 30Resolved

Total Haloacetic Acids (HAA5)

27

Sep 30Resolved

TTHM

27

Sep 30Resolved

TTHM

27

Sep 30Resolved

Lead and Copper Rule

52

Sep 30Resolved

Lead and Copper Rule

52

Sep 30Resolved

Lead and Copper Rule

52

Sep 30Resolved

Lead and Copper Rule

52

Sep 30Resolved

Chlorine

27

Aug 31Resolved

Chlorine

27

Aug 31Resolved

Chlorine

27

Aug 31Resolved

Lead and Copper Rule

56

Jun 30Active

Lead and Copper Rule

56

Jun 30Active

Lead and Copper Rule

52

Jun 30Resolved

Lead and Copper Rule

52

Jun 30Resolved

Lead and Copper Rule

52

Jun 30Resolved

TTHM

27

Jun 30Resolved

TTHM

27

Jun 30Resolved

Total Haloacetic Acids (HAA5)

27

Jun 30Resolved

Total Haloacetic Acids (HAA5)

27

Jun 30Resolved

Consumer Confidence Rule

71

Jun 30Resolved

Consumer Confidence Rule

71

Jun 30Resolved

TTHM

27

Jan 31Resolved

TTHM

27

Jan 31Resolved

Total Haloacetic Acids (HAA5)

27

Jan 31Resolved

Total Haloacetic Acids (HAA5)

27

Jan 31Resolved

Surface Water Treatment Rule

41

Jan 31Resolved

Surface Water Treatment Rule

41

Jan 31Resolved

Surface Water Treatment Rule

41

Jan 31Resolved

Surface Water Treatment Rule

41

Jan 31Resolved

Surface Water Treatment Rule

41

Jan 31Resolved

Surface Water Treatment Rule

41

Jan 31Resolved

Surface Water Treatment Rule

41

Jan 31Resolved

Surface Water Treatment Rule

41

Jan 31Resolved

How Does This Compare?

PARK HILL (74451) has 1,269 recorded violations, including 35 health-based. 17 remain unresolved. Consider testing your tap water independently for added peace of mind.

Recommended Water Filters

Based on the contaminants detected in your area, these filter types may help improve your water quality.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove.

Nearby ZIP Codes

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