Water Quality in Washington, DC (20240)
EPA violation data for public water systems serving ZIP code 20240.
62
Total Violations
8
Health-Based
54
Monitoring / Reporting
50
Resolved
What does this mean?
50 of 62 violations have been resolved. 8 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 54 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 (62 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Combined Uranium | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Combined Uranium | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Gross Alpha, Excl. Radon and U | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Combined Uranium | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Combined Uranium | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Gross Alpha, Excl. Radon and U | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Active | N/A |
| Public Notice | Monitoring | N/A | N/A | Dec 12, 2024 | Resolved | N/A |
| LEAD AND COPPER RULE REVISIONS | Monitoring | N/A | N/A | Nov 15, 2024 | Active | N/A |
Lead & Copper Levels
Violation Timeline
2025(3)
Combined Uranium
03
Combined Uranium
03
Gross Alpha, Excl. Radon and U
03
2024(21)
Combined Uranium
03
Combined Uranium
03
Gross Alpha, Excl. Radon and U
03
Lead and Copper Rule
52
Lead and Copper Rule
52
Public Notice
75
LEAD AND COPPER RULE REVISIONS
4H
LEAD AND COPPER RULE REVISIONS
4H
LEAD AND COPPER RULE REVISIONS
4H
LEAD AND COPPER RULE REVISIONS
4H
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
4G
Gross Alpha, Excl. Radon and U
03
Combined Uranium
03
Combined Uranium
03
Revised Total Coliform Rule
2A
E. COLI
34
Consumer Confidence Rule
71
Consumer Confidence Rule
71
How Does This Compare?
Washington (20240) has 62 recorded violations, including 8 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
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
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.