Water Quality in DEER PARK, TX (77536)

EPA violation data for public water systems serving ZIP code 77536.

307

Total Violations

11

Health-Based

296

Monitoring / Reporting

295

Resolved

What does this mean?

295 of 307 violations have been resolved. 11 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 296 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: 25 Population served: 41,281

Violations Detail (307 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Lead and Copper RuleMonitoringN/AN/ASep 28, 2025ActiveN/A
Public NoticeMonitoringN/AN/ASep 6, 2025ActiveN/A
Public NoticeMonitoringN/AN/AApr 30, 2025ResolvedN/A
Public NoticeMonitoringN/AN/AApr 30, 2025ResolvedN/A
Public NoticeMonitoringN/AN/AApr 30, 2025ResolvedN/A
Public NoticeMonitoringN/AN/AApr 30, 2025ResolvedN/A
ChlorineMonitoringN/AN/AMar 31, 2025ResolvedEye and nose irritation; stomach discomfort
Lead and Copper RuleMonitoringN/AN/AMar 31, 2025ActiveN/A
Revised Total Coliform RuleMonitoringN/AN/AFeb 28, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJan 31, 2025ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(10)

Lead and Copper Rule

66

Sep 28Active

Public Notice

75

Sep 6Active

Public Notice

75

Apr 30Resolved

Public Notice

75

Apr 30Resolved

Public Notice

75

Apr 30Resolved

Public Notice

75

Apr 30Resolved

Chlorine

27

Mar 31Resolved

Lead and Copper Rule

66

Mar 31Active

Revised Total Coliform Rule

3A

Feb 28Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

2024(39)

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Lead and Copper Rule

66

Dec 29Resolved

Lead and Copper Rule

66

Dec 29Resolved

Public Notice

75

Nov 30Resolved

Public Notice

75

Nov 30Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Active

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Active

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Active

LEAD AND COPPER RULE REVISIONS

2E

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 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

Lead and Copper Rule

52

Sep 30Resolved

Lead and Copper Rule

52

Sep 30Resolved

Lead and Copper Rule

52

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Fluoride

03

Sep 30Resolved

Fluoride

03

Sep 30Resolved

Lead and Copper Rule

66

Sep 28Active

Lead and Copper Rule

66

Sep 28Active

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

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

How Does This Compare?

DEER PARK (77536) has 307 recorded violations, including 11 health-based. 12 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

Check Another ZIP Code