Water Quality in NORMAN, OK (73071)

EPA violation data for public water systems serving ZIP code 73071.

408

Total Violations

7

Health-Based

401

Monitoring / Reporting

404

Resolved

What does this mean?

404 of 408 violations have been resolved. 7 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 401 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: 39 Population served: 109,555

Violations Detail (408 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Carbon tetrachlorideMonitoringN/AN/AMar 31, 2025ResolvedLiver problems; increased risk of cancer
1,1,1-TrichloroethaneMonitoringN/AN/AMar 31, 2025ResolvedN/A
StyreneMonitoringN/AN/AMar 31, 2025ResolvedN/A
BenzeneMonitoringN/AN/AMar 31, 2025ResolvedAnemia; decrease in blood platelets; increased risk of cancer
BenzeneMonitoringN/AN/AMar 31, 2025ResolvedAnemia; decrease in blood platelets; increased risk of cancer
TolueneMonitoringN/AN/AMar 31, 2025ResolvedN/A
TolueneMonitoringN/AN/AMar 31, 2025ResolvedN/A
StyreneMonitoringN/AN/AMar 31, 2025ResolvedN/A
1,1-DichloroethyleneMonitoringN/AN/AMar 31, 2025ResolvedN/A
trans-1,2-DichloroethyleneMonitoringN/AN/AMar 31, 2025ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(47)

Carbon tetrachloride

03

Mar 31Resolved

1,1,1-Trichloroethane

03

Mar 31Resolved

Styrene

03

Mar 31Resolved

Benzene

03

Mar 31Resolved

Benzene

03

Mar 31Resolved

Toluene

03

Mar 31Resolved

Toluene

03

Mar 31Resolved

Styrene

03

Mar 31Resolved

1,1-Dichloroethylene

03

Mar 31Resolved

trans-1,2-Dichloroethylene

03

Mar 31Resolved

Trichloroethylene

03

Mar 31Resolved

Trichloroethylene

03

Mar 31Resolved

Vinyl chloride

03

Mar 31Resolved

Vinyl chloride

03

Mar 31Resolved

p-Dichlorobenzene

03

Mar 31Resolved

p-Dichlorobenzene

03

Mar 31Resolved

trans-1,2-Dichloroethylene

03

Mar 31Resolved

1,2-Dichloroethane

03

Mar 31Resolved

1,2-Dichloroethane

03

Mar 31Resolved

Ethylbenzene

03

Mar 31Resolved

Ethylbenzene

03

Mar 31Resolved

1,1,1-Trichloroethane

03

Mar 31Resolved

Carbon tetrachloride

03

Mar 31Resolved

CHLOROBENZENE

03

Mar 31Resolved

CHLOROBENZENE

03

Mar 31Resolved

cis-1,2-Dichloroethylene

03

Mar 31Resolved

cis-1,2-Dichloroethylene

03

Mar 31Resolved

1,1-Dichloroethylene

03

Mar 31Resolved

DICHLOROMETHANE

03

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

1,2-Dichloropropane

03

Mar 31Resolved

1,2-Dichloropropane

03

Mar 31Resolved

Tetrachloroethylene

03

Mar 31Resolved

Tetrachloroethylene

03

Mar 31Resolved

1,1,2-Trichloroethane

03

Mar 31Resolved

o-Dichlorobenzene

03

Mar 31Resolved

o-Dichlorobenzene

03

Mar 31Resolved

1,2,4-Trichlorobenzene

03

Mar 31Resolved

1,2,4-Trichlorobenzene

03

Mar 31Resolved

Xylenes, Total

03

Mar 31Resolved

Xylenes, Total

03

Mar 31Resolved

DICHLOROMETHANE

03

Mar 31Resolved

1,1,2-Trichloroethane

03

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

2024(67)

DICHLOROMETHANE

03

Dec 31Resolved

Toluene

03

Dec 31Resolved

1,1,1-Trichloroethane

03

Dec 31Resolved

1,1,2-Trichloroethane

03

Dec 31Resolved

cis-1,2-Dichloroethylene

03

Dec 31Resolved

cis-1,2-Dichloroethylene

03

Dec 31Resolved

Ethylbenzene

03

Dec 31Resolved

1,1-Dichloroethylene

03

Dec 31Resolved

trans-1,2-Dichloroethylene

03

Dec 31Resolved

trans-1,2-Dichloroethylene

03

Dec 31Resolved

o-Dichlorobenzene

03

Dec 31Resolved

o-Dichlorobenzene

03

Dec 31Resolved

1,1,2-Trichloroethane

03

Dec 31Resolved

CHLOROBENZENE

03

Dec 31Resolved

CHLOROBENZENE

03

Dec 31Resolved

Xylenes, Total

03

Dec 31Resolved

Xylenes, Total

03

Dec 31Resolved

p-Dichlorobenzene

03

Dec 31Resolved

1,1-Dichloroethylene

03

Dec 31Resolved

p-Dichlorobenzene

03

Dec 31Resolved

1,2-Dichloropropane

03

Dec 31Resolved

Carbon tetrachloride

03

Dec 31Resolved

Carbon tetrachloride

03

Dec 31Resolved

Trichloroethylene

03

Dec 31Resolved

Trichloroethylene

03

Dec 31Resolved

Tetrachloroethylene

03

Dec 31Resolved

Tetrachloroethylene

03

Dec 31Resolved

Benzene

03

Dec 31Resolved

Benzene

03

Dec 31Resolved

1,2-Dichloropropane

03

Dec 31Resolved

Styrene

03

Dec 31Resolved

Styrene

03

Dec 31Resolved

Ethylbenzene

03

Dec 31Resolved

Toluene

03

Dec 31Resolved

DICHLOROMETHANE

03

Dec 31Resolved

1,1,1-Trichloroethane

03

Dec 31Resolved

1,2,4-Trichlorobenzene

03

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Vinyl chloride

03

Dec 31Resolved

Vinyl chloride

03

Dec 31Resolved

1,2-Dichloroethane

03

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

1,2-Dichloroethane

03

Dec 31Resolved

1,2,4-Trichlorobenzene

03

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 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

2E

Oct 16Active

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

E. COLI

34

May 14Active

E. COLI

34

May 14Active

Revised Total Coliform Rule

3B

Apr 30Resolved

Revised Total Coliform Rule

3B

Apr 30Resolved

Revised Total Coliform Rule

3B

Apr 30Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

How Does This Compare?

NORMAN (73071) has 408 recorded violations, including 7 health-based. 4 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

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

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

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