Water Quality in MERCERSBURG, PA (17236)

EPA violation data for public water systems serving ZIP code 17236.

417

Total Violations

18

Health-Based

399

Monitoring / Reporting

413

Resolved

What does this mean?

413 of 417 violations have been resolved. 18 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 399 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: 27 Population served: 8,054

Violations Detail (417 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Revised Total Coliform RuleMonitoringN/AN/AJul 10, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 10, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AMay 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AMay 1, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AMay 1, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AMay 1, 2025ResolvedN/A
CARBON, TOTALMonitoringN/AN/AMar 31, 2025ResolvedN/A
CARBON, TOTALMonitoringN/AN/AMar 31, 2025ResolvedN/A
ChlorineMonitoringN/AN/AJan 31, 2025ResolvedEye and nose irritation; stomach discomfort
Revised Total Coliform RuleMonitoringN/AN/AJan 31, 2025ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(18)

Revised Total Coliform Rule

4B

Jul 10Resolved

Revised Total Coliform Rule

4B

Jul 10Resolved

Revised Total Coliform Rule

3A

May 31Resolved

Revised Total Coliform Rule

4C

May 1Resolved

Revised Total Coliform Rule

4C

May 1Resolved

Revised Total Coliform Rule

4C

May 1Resolved

CARBON, TOTAL

27

Mar 31Resolved

CARBON, TOTAL

27

Mar 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

Revised Total Coliform Rule

3A

Jan 31Resolved

Groundwater Rule

31

Jan 31Resolved

Groundwater Rule

31

Jan 31Resolved

Groundwater Rule

31

Jan 31Resolved

Chlorine

27

Jan 31Resolved

Chlorine

27

Jan 31Resolved

2024(73)

CARBON, TOTAL

27

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Groundwater Rule

31

Dec 31Resolved

Chlorine

27

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

E. COLI

34

Oct 12Resolved

E. COLI

34

Oct 12Resolved

E. COLI

34

Oct 12Resolved

E. COLI

34

Oct 12Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Groundwater Rule

31

Jul 31Resolved

Chlorine

27

Jul 31Resolved

Chlorine

27

Jul 31Resolved

Groundwater Rule

31

Jul 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

Jul 31Resolved

Public Notice

75

Jul 10Resolved

Public Notice

75

Jul 10Resolved

Public Notice

75

Jul 10Resolved

Public Notice

75

Jul 10Resolved

Public Notice

75

Jul 10Resolved

Public Notice

75

Jul 10Resolved

Groundwater Rule

31

May 31Resolved

Surface Water Treatment Rule

36

May 31Resolved

Surface Water Treatment Rule

36

May 31Resolved

Groundwater Rule

31

May 31Resolved

Public Notice

75

May 12Resolved

Public Notice

75

May 12Resolved

Public Notice

75

May 12Resolved

Public Notice

75

May 12Resolved

Public Notice

75

May 12Resolved

Public Notice

75

May 12Resolved

Public Notice

75

May 12Resolved

Public Notice

75

May 12Resolved

Groundwater Rule

41

Apr 30Resolved

Groundwater Rule

41

Apr 30Resolved

Groundwater Rule

41

Apr 30Resolved

Groundwater Rule

41

Apr 30Resolved

Groundwater Rule

41

Apr 30Resolved

Groundwater Rule

41

Apr 30Resolved

Groundwater Rule

41

Apr 30Resolved

Groundwater Rule

41

Apr 30Resolved

Public Notice

75

Apr 12Resolved

Public Notice

75

Apr 12Resolved

Public Notice

75

Apr 12Resolved

Public Notice

75

Apr 12Resolved

Public Notice

75

Apr 12Resolved

Groundwater Rule

41

Mar 31Resolved

Groundwater Rule

41

Mar 31Resolved

Groundwater Rule

41

Mar 31Resolved

Groundwater Rule

41

Mar 31Resolved

Groundwater Rule

41

Mar 31Resolved

Groundwater Rule

31

Feb 29Resolved

Surface Water Treatment Rule

36

Jan 31Resolved

Surface Water Treatment Rule

36

Jan 31Resolved

Interim Enhanced Surface Water Treatment Rule

38

Jan 31Resolved

Chlorine

27

Jan 31Resolved

Groundwater Rule

31

Jan 31Resolved

Groundwater Rule

31

Jan 31Resolved

Chlorine

27

Jan 31Resolved

Interim Enhanced Surface Water Treatment Rule

38

Jan 31Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

Revised Total Coliform Rule

3A

Jan 31Resolved

How Does This Compare?

MERCERSBURG (17236) has 417 recorded violations, including 18 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

One of the few filtration methods effective at removing nitrates and nitrites. Essential for households with infants.

Targets:Nitrate, Nitrite, Dissolved Solids

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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