Water Quality in CLARKSBURG, MD (20871)
EPA violation data for public water systems serving ZIP code 20871.
51
Total Violations
16
Health-Based
35
Monitoring / Reporting
48
Resolved
What does this mean?
48 of 51 violations have been resolved. 16 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 35 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.
Violations Detail (51 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Public Notice | Monitoring | N/A | N/A | Aug 10, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Aug 10, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jan 22, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jan 22, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 22, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 22, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Dec 22, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Dec 22, 2024 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Nov 23, 2024 | Resolved | N/A |
| E. COLI | Monitoring | 0 | N/A | Nov 23, 2024 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
Violation Timeline
2025(4)
Public Notice
75
Public Notice
75
Public Notice
75
Public Notice
75
2024(35)
Revised Total Coliform Rule
4F
Revised Total Coliform Rule
4F
Revised Total Coliform Rule
2B
Revised Total Coliform Rule
2B
Public Notice
75
E. COLI
34
E. COLI
34
E. COLI
34
Public Notice
75
Public Notice
75
Public Notice
75
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
2E
Revised Total Coliform Rule
2A
Revised Total Coliform Rule
2A
Revised Total Coliform Rule
4F
Revised Total Coliform Rule
4F
Revised Total Coliform Rule
4F
Revised Total Coliform Rule
2B
Revised Total Coliform Rule
2B
Revised Total Coliform Rule
2B
Revised Total Coliform Rule
4F
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
How Does This Compare?
CLARKSBURG (20871) has 51 recorded violations, including 16 health-based. 3 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.