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Clean Water Act discharge permit · NPDES MDR002523

MESO SCALE DIAGNOSTICS, LLC, Gaithersburg, MD: NPDES MDR002523 discharge permit, effluent exceedances, inspections, penalties

MESO SCALE DIAGNOSTICS, LLC holds NPDES permit MDR002523. EPA’s file records it issued July 9, 2021 and expiring December 31, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for MESO SCALE DIAGNOSTICS, LLC: its NPDES ID, its permit type and status, its dates, its address in Gaithersburg, Maryland. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MDR002523.

Identity

Facility as filedMESO SCALE DIAGNOSTICS, LLC
Permittee as filedMESO SCALE DIAGNOSTICS, LLC
NPDES IDMDR002523
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJuly 9, 2021
Expiration dateDecember 31, 2026
Issuing agencyMARYLAND DEPARTMENT OF THE ENVIRONMENT
AddressGaithersburg, MD 20877
Receiving water impaired303(D) Listed
SubwatershedMuddy Branch (HUC 020700081001)
Other EPA IDs (FRS)RCRA handler MDR000510834

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MDR002523.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MDR002523.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MDR002523 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

MESO SCALE DIAGNOSTICS, LLC's general permit coverage MDR002523 in Gaithersburg is one of 120 such coverages in Montgomery County, and 22.5% of those 120 were issued before this one. It sits among 14 NPDES permits in the Muddy Branch subwatershed, and 30.8% of the county's 120 general permit coverages have a violation on file, while this permit has none of the recorded pollutants under a numeric limit or effluent exceedances.