Water Quality in LAKE HOPATCONG, NJ (07849)

EPA violation data for public water systems serving ZIP code 07849.

463

Total Violations

71

Health-Based

392

Monitoring / Reporting

441

Resolved

What does this mean?

441 of 463 violations have been resolved. 71 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 392 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: 95 Population served: 51,027

Violations Detail (463 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Revised Total Coliform RuleMonitoringN/AN/ASep 10, 2025ActiveN/A
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
E. COLIMonitoring0N/AJul 18, 2025ActiveSevere gastrointestinal illness; may be fatal in vulnerable populations
E. COLIMonitoring0N/AJul 18, 2025ActiveSevere gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform RuleMonitoringN/AN/AJul 10, 2025ActiveN/A
Revised Total Coliform RuleMonitoringN/AN/AJun 30, 2025ResolvedN/A
Public NoticeMonitoringN/AN/AJun 20, 2025ResolvedN/A
Public NoticeMonitoringN/AN/AJun 20, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJun 10, 2025ActiveN/A

Lead & Copper Levels

Violation Timeline

2025(32)

Revised Total Coliform Rule

4B

Sep 10Active

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

E. COLI

34

Jul 18Active

E. COLI

34

Jul 18Active

Revised Total Coliform Rule

4B

Jul 10Active

Revised Total Coliform Rule

3A

Jun 30Resolved

Public Notice

75

Jun 20Resolved

Public Notice

75

Jun 20Resolved

Revised Total Coliform Rule

4B

Jun 10Active

Revised Total Coliform Rule

3A

May 31Resolved

Revised Total Coliform Rule

3A

May 31Resolved

Revised Total Coliform Rule

3A

Apr 30Resolved

Revised Total Coliform Rule

3A

Apr 30Resolved

Lead and Copper Rule

66

Mar 31Resolved

Lead and Copper Rule

66

Mar 31Resolved

Lead and Copper Rule

66

Mar 31Resolved

Revised Total Coliform Rule

4B

Mar 10Resolved

Revised Total Coliform Rule

4B

Mar 10Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

Revised Total Coliform Rule

2B

Jan 24Resolved

Revised Total Coliform Rule

2B

Jan 24Resolved

Revised Total Coliform Rule

2B

Jan 24Resolved

Revised Total Coliform Rule

2B

Jan 24Resolved

Revised Total Coliform Rule

4B

Jan 10Resolved

Revised Total Coliform Rule

4B

Jan 10Resolved

Revised Total Coliform Rule

2B

Jan 1Resolved

Revised Total Coliform Rule

2B

Jan 1Resolved

Revised Total Coliform Rule

2B

Jan 1Resolved

Revised Total Coliform Rule

2B

Jan 1Resolved

2024(126)

Lead and Copper Rule

59

Dec 31Resolved

Revised Total Coliform Rule

4A

Dec 9Active

Revised Total Coliform Rule

4A

Dec 9Active

Revised Total Coliform Rule

3A

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

E. COLI

34

Nov 25Active

E. COLI

34

Nov 25Active

E. COLI

34

Nov 25Active

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Active

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Active

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

Revised Total Coliform Rule

4B

Oct 10Resolved

Revised Total Coliform Rule

4B

Oct 10Resolved

Lead and Copper Rule

52

Sep 30Active

Lead and Copper Rule

52

Sep 30Active

Consumer Confidence Rule

72

Sep 30Resolved

Consumer Confidence Rule

72

Sep 30Resolved

Consumer Confidence Rule

72

Sep 30Resolved

Consumer Confidence Rule

72

Sep 30Resolved

Revised Total Coliform Rule

2A

Sep 18Resolved

Revised Total Coliform Rule

2A

Sep 18Resolved

Revised Total Coliform Rule

2A

Sep 18Resolved

Revised Total Coliform Rule

2A

Sep 18Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

4B

Aug 21Resolved

Revised Total Coliform Rule

4B

Aug 21Resolved

E. COLI

34

Jul 16Resolved

E. COLI

34

Jul 16Resolved

E. COLI

34

Jul 16Resolved

Revised Total Coliform Rule

4B

Jul 10Resolved

Revised Total Coliform Rule

4B

Jul 10Resolved

Lead and Copper Rule

53

Jun 30Resolved

Lead and Copper Rule

59

Jun 30Resolved

Lead and Copper Rule

59

Jun 30Resolved

Lead and Copper Rule

59

Jun 30Resolved

Lead and Copper Rule

53

Jun 30Resolved

o-Dichlorobenzene

03

Jun 30Resolved

p-Dichlorobenzene

03

Jun 30Resolved

Vinyl chloride

03

Jun 30Resolved

CHLOROBENZENE

03

Jun 30Resolved

CHLOROBENZENE

03

Jun 30Resolved

Toluene

03

Jun 30Resolved

Toluene

03

Jun 30Resolved

Toluene

03

Jun 30Resolved

Xylenes, Total

03

Jun 30Resolved

Ethylbenzene

03

Jun 30Resolved

trans-1,2-Dichloroethylene

03

Jun 30Resolved

trans-1,2-Dichloroethylene

03

Jun 30Resolved

trans-1,2-Dichloroethylene

03

Jun 30Resolved

1,1-Dichloroethylene

03

Jun 30Resolved

1,1-Dichloroethylene

03

Jun 30Resolved

1,1-Dichloroethylene

03

Jun 30Resolved

1,2,4-Trichlorobenzene

03

Jun 30Resolved

1,1,2-Trichloroethane

03

Jun 30Resolved

1,2,4-Trichlorobenzene

03

Jun 30Resolved

Styrene

03

Jun 30Resolved

Styrene

03

Jun 30Resolved

Styrene

03

Jun 30Resolved

Vinyl chloride

03

Jun 30Resolved

Trichloroethylene

03

Jun 30Resolved

DICHLOROMETHANE

03

Jun 30Resolved

Vinyl chloride

03

Jun 30Resolved

DICHLOROMETHANE

03

Jun 30Resolved

DICHLOROMETHANE

03

Jun 30Resolved

Benzene

03

Jun 30Resolved

Benzene

03

Jun 30Resolved

cis-1,2-Dichloroethylene

03

Jun 30Resolved

cis-1,2-Dichloroethylene

03

Jun 30Resolved

cis-1,2-Dichloroethylene

03

Jun 30Resolved

o-Dichlorobenzene

03

Jun 30Resolved

Benzene

03

Jun 30Resolved

Tetrachloroethylene

03

Jun 30Resolved

Tetrachloroethylene

03

Jun 30Resolved

Tetrachloroethylene

03

Jun 30Resolved

Trichloroethylene

03

Jun 30Resolved

Trichloroethylene

03

Jun 30Resolved

1,1,2-Trichloroethane

03

Jun 30Resolved

Ethylbenzene

03

Jun 30Resolved

p-Dichlorobenzene

03

Jun 30Resolved

p-Dichlorobenzene

03

Jun 30Resolved

1,1,2-Trichloroethane

03

Jun 30Resolved

1,2-Dichloropropane

03

Jun 30Resolved

Ethylbenzene

03

Jun 30Resolved

1,1,1-Trichloroethane

03

Jun 30Resolved

1,1,1-Trichloroethane

03

Jun 30Resolved

1,1,1-Trichloroethane

03

Jun 30Resolved

Xylenes, Total

03

Jun 30Resolved

Xylenes, Total

03

Jun 30Resolved

CHLOROBENZENE

03

Jun 30Resolved

Carbon tetrachloride

03

Jun 30Resolved

Carbon tetrachloride

03

Jun 30Resolved

Carbon tetrachloride

03

Jun 30Resolved

1,2-Dichloroethane

03

Jun 30Resolved

1,2-Dichloroethane

03

Jun 30Resolved

1,2-Dichloroethane

03

Jun 30Resolved

1,2-Dichloropropane

03

Jun 30Resolved

1,2-Dichloropropane

03

Jun 30Resolved

o-Dichlorobenzene

03

Jun 30Resolved

1,2,4-Trichlorobenzene

03

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 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

Jun 18Resolved

E. COLI

34

Jun 18Resolved

E. COLI

34

Jun 18Resolved

E. COLI

34

Jun 18Resolved

E. COLI

34

Jun 18Resolved

E. COLI

34

Jun 18Resolved

E. COLI

34

Jun 18Resolved

Public Notice

75

May 9Resolved

Public Notice

75

May 9Resolved

Chlorine

27

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Lead and Copper Rule

66

Mar 30Resolved

Lead and Copper Rule

66

Mar 30Resolved

Lead and Copper Rule

66

Mar 30Active

Revised Total Coliform Rule

4B

Jan 10Resolved

Revised Total Coliform Rule

4B

Jan 10Resolved

How Does This Compare?

LAKE HOPATCONG (07849) has 463 recorded violations, including 71 health-based. 22 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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