Clean Water Act discharge permit · NPDES MD0003484

R. C. WILLSON WATER TREATMENT PLANT, Hagerstown, MD: NPDES MD0003484 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
5Pollutants under a numeric limit
2Pollutants with an effluent exceedance

R. C. WILLSON WATER TREATMENT PLANT, held by CITY OF HAGERSTOWN WATER DEPT., holds NPDES permit MD0003484, which discharges to Upper Potomac River - Washington County. EPA’s file records it issued April 14, 2017 and expiring May 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	R. C. WILLSON WATER TREATMENT PLANT
Permittee as filed	CITY OF HAGERSTOWN WATER DEPT.
NPDES ID	MD0003484
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	April 14, 2017
Expiration date	May 31, 2022
Issuing agency	MD DEPARTMENT OF THE ENVIRONMENT
Address	Hagerstown, MD 21795
Receiving water	UPPER POTOMAC RIVER - WASHINGTON COUNTY
Receiving water impaired	303(D) Listed
Subwatershed	Camp Spring Run-Potomac River (HUC 020700041103)
SIC	4941 – Water Supply
Other EPA IDs (FRS)	RCRA handler MDR000525501

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

6Pollutants on file
5Under a numeric limit
5With a violation of any kind
2With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Aluminum, total [as Al]	0	9	3	December 31, 2005	122% over the limit
Solids, total suspended	2	7	3	December 31, 2005	140% over the limit
pH	2	4	0
Chlorine, total residual	1	3	0
Flow, in conduit or thru treatment plant	1	2	0
Aluminum, total recoverable	2	0	0

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MD0003484.

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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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 MD0003484 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers the Clean Water Act NPDES discharge permit MD0003484 for the R. C. Willson Water Treatment Plant in Hagerstown, MD, held by City of Hagerstown Water Dept., which discharges to the Upper Potomac River in Washington County. The permit is listed as administratively continued with a minor discharger class of 5, with 2 pollutants under a numeric limit and 2 pollutants showing an effluent exceedance. The file records an issue date of April 14, 2017 and an expiration date of May 31, 2022.