Water Quality in NICHOLS HILLS, OK (73116)

EPA violation data for public water systems serving ZIP code 73116.

204

Total Violations

Health-Based

202

Monitoring / Reporting

202

Resolved

What does this mean?

202 of 204 violations have been resolved. 2 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 202 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: 3 Population served: 4,071

Violations Detail (204 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2024	Active	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Atrazine	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	Cardiovascular system or reproductive problems
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2023	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Atrazine	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Cardiovascular system or reproductive problems
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Toxaphene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
1,2-DIBROMO-3-CHLOROPROPANE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Nitrate-Nitrite	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Endothall	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Endrin	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Atrazine	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Cardiovascular system or reproductive problems
Benzo(a)pyrene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Dalapon	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Diquat	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Glyphosate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Picloram	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
2,4,5-TP	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Total Polychlorinated Biphenyls (PCB)	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
ETHYLENE DIBROMIDE	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Chlordane	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Dinoseb	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
2,4-D	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2024(6)

Total Haloacetic Acids (HAA5)

Dec 31Active

TTHM

Dec 31Active

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

Oct 16Resolved

2023(103)

Chlordane

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

Diquat

Dec 31Resolved

Diquat

Dec 31Resolved

Diquat

Dec 31Resolved

Atrazine

Dec 31Resolved

Atrazine

Dec 31Resolved

Atrazine

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

OXAMYL

Dec 31Resolved

OXAMYL

Dec 31Resolved

OXAMYL

Dec 31Resolved

Chlordane

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

TTHM

Dec 31Resolved

Dinoseb

Dec 31Resolved

Dinoseb

Dec 31Resolved

Dinoseb

Dec 31Resolved

Chlordane

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Endrin

Dec 31Resolved

Endrin

Dec 31Resolved

Endrin

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

Toxaphene

Dec 31Resolved

Toxaphene

Dec 31Resolved

Toxaphene

Dec 31Resolved

Dalapon

Dec 31Resolved

Dalapon

Dec 31Resolved

Dalapon

Dec 31Resolved

Endothall

Dec 31Resolved

Endothall

Dec 31Resolved

Endothall

Dec 31Resolved

Glyphosate

Dec 31Resolved

Glyphosate

Dec 31Resolved

Glyphosate

Dec 31Resolved

Simazine

Dec 31Resolved

Simazine

Dec 31Resolved

Simazine

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Picloram

Dec 31Resolved

Picloram

Dec 31Resolved

Picloram

Dec 31Resolved

Carbofuran

Dec 31Resolved

Carbofuran

Dec 31Resolved

Carbofuran

Dec 31Resolved

LASSO

Dec 31Resolved

LASSO

Dec 31Resolved

LASSO

Dec 31Resolved

Heptachlor

Dec 31Resolved

Heptachlor

Dec 31Resolved

Heptachlor

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

2,4-D

Dec 31Resolved

2,4-D

Dec 31Resolved

2,4-D

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Total Haloacetic Acids (HAA5)

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Consumer Confidence Rule

Oct 1Resolved

Consumer Confidence Rule

Oct 1Resolved

2022(91)

Endrin

Dec 31Resolved

Atrazine

Dec 31Resolved

Toxaphene

Dec 31Resolved

Toxaphene

Dec 31Resolved

Toxaphene

Dec 31Resolved

Endrin

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

1,2-DIBROMO-3-CHLOROPROPANE

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Nitrate-Nitrite

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

LASSO

Dec 31Resolved

Endothall

Dec 31Resolved

Endothall

Dec 31Resolved

Endothall

Dec 31Resolved

Carbofuran

Dec 31Resolved

Carbofuran

Dec 31Resolved

Carbofuran

Dec 31Resolved

LASSO

Dec 31Resolved

LASSO

Dec 31Resolved

Endrin

Dec 31Resolved

Atrazine

Dec 31Resolved

Atrazine

Dec 31Resolved

Benzo(a)pyrene

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

BHC-GAMMA

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Methoxychlor

Dec 31Resolved

Dalapon

Dec 31Resolved

Dalapon

Dec 31Resolved

Dalapon

Dec 31Resolved

Diquat

Dec 31Resolved

Diquat

Dec 31Resolved

Diquat

Dec 31Resolved

Glyphosate

Dec 31Resolved

Glyphosate

Dec 31Resolved

Glyphosate

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Di(2-ethylhexyl) adipate

Dec 31Resolved

Simazine

Dec 31Resolved

Simazine

Dec 31Resolved

Simazine

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Di(2-ethylhexyl) phthalate

Dec 31Resolved

Picloram

Dec 31Resolved

Picloram

Dec 31Resolved

Picloram

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Hexachlorocyclopentadiene

Dec 31Resolved

Heptachlor

Dec 31Resolved

Heptachlor

Dec 31Resolved

Heptachlor

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

2,4,5-TP

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

HEXACHLOROBENZENE

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

Total Polychlorinated Biphenyls (PCB)

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

ETHYLENE DIBROMIDE

Dec 31Resolved

Chlordane

Dec 31Resolved

Chlordane

Dec 31Resolved

Chlordane

Dec 31Resolved

OXAMYL

Dec 31Resolved

2,4-D

Dec 31Resolved

Dinoseb

Dec 31Resolved

OXAMYL

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

Heptachlor epoxide

Dec 31Resolved

Dinoseb

Dec 31Resolved

Dinoseb

Dec 31Resolved

2,4-D

Dec 31Resolved

2,4-D

Dec 31Resolved

OXAMYL

Dec 31Resolved

How Does This Compare?

NICHOLS HILLS (73116) has 204 recorded violations, including 2 health-based. 2 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 →

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

Water Quality in NICHOLS HILLS, OK (73116)

What does this mean?

Violations Detail (204 total)

Lead & Copper Levels

Violation Timeline

2024(6)

2023(103)

2022(91)

2021(4)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Activated Carbon Filter

Nearby ZIP Codes

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