Martinsburg, WV Water Quality (ZIP 25402)

Quick Answers

Is ZIP 25402 tap water safe to drink? Water for ZIP 25402 shows high PFAS contamination. EPA testing found a peak of 86.1 ppt, above the EPA's 4 ppt enforceable limit. A reverse osmosis or certified PFAS filter is strongly recommended.

What filter should I use in 25402? Match the filter to the data: reverse osmosis handles PFAS, lead, and arsenic together; NSF-53 pitchers cover the taps you drink from. A basic Brita pitcher will not remove PFAS.

ZIP 25402 Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in the water system serving ZIP 25402 (Martinsburg, WV). Monitoring found a peak of 86.1 ppt across 1 system, averaging 17.45 ppt over 5 detected compounds.

Contamination Level: HIGH – High contamination – multiple PFAS compounds detected at levels significantly above EPA safety thresholds.

Top Detected Compounds in ZIP 25402

• PFOS: 86.1 ppt (exceeds the EPA 4 ppt limit)
• PFHXS: 70.9 ppt (exceeds the EPA 10 ppt limit)
• PFPEA: 0.02 ppt
• PFBA: 0.01 ppt
• PFHXA: 0.01 ppt

Lead in ZIP 25402 Water

EPA Lead and Copper Rule testing recorded 17 lead samples for the system serving 25402, with a 90th-percentile high of 0.007 mg/L (within the EPA 0.015 mg/L action level). There is no safe level of lead for children; homes built before 1986 should use a certified NSF/ANSI 53 lead filter.

EPA Violations Affecting ZIP 25402

The water system serving 25402 have 2 health-based EPA Safe Drinking Water Act violations on record, including Selenium. A health-based violation means a contaminant exceeded its federal limit or required treatment was not applied.

About the Data

These figures come from EPA UCMR5 (2023-2025) plus Lead and Copper Rule and SDWIS records for the public water system serving ZIP 25402. UCMR5 is the most comprehensive national drinking water survey in US history.