Clean Water Act discharge permit · NPDES WVG671061

MAYFIELD LP PIPELINE HYDROSTATIC DISCHARGE, Sistersville, WV: NPDES WVG671061 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
5Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MAYFIELD LP PIPELINE HYDROSTATIC DISCHARGE, held by ANTERO MIDSTREAM LLC, holds NPDES permit WVG671061, which discharges to Nd/Unt/Point Pleasant Ck/ Middle Island Ck/Ohio Rv. EPA’s file records it issued October 9, 2024 and expiring May 11, 2027. 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 MAYFIELD LP PIPELINE HYDROSTATIC DISCHARGE: its NPDES ID, its permit type and status, its dates, its address in Sistersville, West Virginia, its receiving water, and 5 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES WVG671061.

Identity

Facility as filed	MAYFIELD LP PIPELINE HYDROSTATIC DISCHARGE
Permittee as filed	ANTERO MIDSTREAM LLC
NPDES ID	WVG671061
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	October 9, 2024
Expiration date	May 11, 2027
Address	Sistersville, WV 26175
Receiving water	ND/UNT/Point Pleasant Ck/ Middle Island Ck/Ohio Rv
Subwatershed	Point Pleasant Creek (HUC 050302010503)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

5Pollutants on file
5Under a numeric limit
0With a violation of any kind
0With 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
pH	4	0	0
Solids, total suspended	2	0	0
Oil & Grease	2	0	0
Flow, in conduit or thru treatment plant	2	0	0
Chlorine, total residual	2	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WVG671061.

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 WVG671061.

Inspections

EPA’s inspection file holds no inspection for NPDES WVG671061.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES WVG671061.

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

Watch this permit

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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 WVG671061 there.

MAYFIELD LP PIPELINE HYDROSTATIC DISCHARGE, Sistersville, West Virginia: Coverage under a general permit WVG671061, held by ANTERO MIDSTREAM LLC; Effective; issued October 9, 2024, term to May 11, 2027; discharges to ND/UNT/Point Pleasant Ck/ Middle Island Ck/Ohio Rv.

pH: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Solids, total suspended: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Oil & Grease: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 2 limits, 0 violations of any kind, 0 effluent exceedances.

Other permits held by ANTERO MIDSTREAM LLC

WRIGLEY LP HYDROSTATIC DISCHARGE, Middlebourne: WVG670980, issued November 4, 2022
FLUHARTY LP PL HYDROSTATIC DISCHARGE, North District: WVG671047, issued May 16, 2024
NALLEY TO ELDON EASTERN LOOP PL HYDROSTATIC DISCHARGE, Sistersville: WVG671048, issued May 29, 2024
STARKEY LP PIPELINE HYDROSTATIC DISCHARGE, Sistersville: WVG671054, issued August 30, 2024
RED LADY TO LINCOLN SWL HYDROSTATIC DISCHARGE, Reader: WVG671055, issued August 30, 2024
MARY PATTERSON LP PL HYDROSTATIC DISCHARGE, Friendly: WVG671072, issued March 28, 2025
WHITE OAK CONNECTOR HYDROSTATIC DISCHARGE, Pennsboro: WVG671073, issued March 28, 2025
YEATER SWL HYDROSTATIC DISCHARGE, Center Point: WVG671081, issued July 31, 2025
NARROWS LP PL, Sistersville: WVG671083, issued August 27, 2025
FLANIGAN SWL, Lumberport: WVG671087, issued December 5, 2025

MAYFIELD LP PIPELINE HYDROSTATIC DISCHARGE among its neighbors

EPA’s permit file holds 12 discharge permits in the Point Pleasant Creek subwatershed (HUC 050302010503), WVG671061 among them. Its county holds 24, 1 of them major permits; WVG671061 is a minor permit.

Other permits in the Point Pleasant Creek subwatershed (HUC 050302010503)

BILL AND PEG MCNEELY, New Martinsville: WVG417691, minor permit, discharging to Natural drainage/Point Pleasant Ck/Middle Island C, permit term to June 30, 2029
ELK FORK, BENS RUN AND FLUHARTY ADDITION WATER EXTENSIONS, Friendly: WVR105708, not classed, discharging to Point Pleasant Ck/ Middle Island Ck/ Sheets Rn/ Oh
GREENWOOD RD (CO.18/11) COUNTY ROUTE IMPROVEMENTS, Sistersville: WVR112840, minor permit, discharging to Pursley Creek/Point Pleasant Creek/Middle Island C, permit term to April 5, 2029
GREGORY A. COMPTON, New Martinsville: WVG417633, minor permit, discharging to Roadside Ditch/UNT/Point Pleasant CK/Middle Island, permit term to June 30, 2029
JAMES E. GODDARD, New Martinsville: WVG417824, minor permit, discharging to Roadside Ditch/Paden Fk/Point Pleasant Ck/Middle I, permit term to June 30, 2029
NARROWS LP PL, Sistersville: WVG671083, minor permit, discharging to ND/Narrows Rn/Point Pleasant Ck/Middle Island/Ck/O, permit term to May 11, 2027
SHERMAN LP PL HYDROSTATIC DISCHARGE, Sistersville: WVG671092, minor permit, discharging to ND/UNT/Pursley Ck/Point Pleasant Ck/ Middle Island, permit term to May 11, 2027
STARKEY LP PIPELINE HYDROSTATIC DISCHARGE, Sistersville: WVG671054, minor permit, discharging to ND/Willow Fk/Point Pleasant Ck/ Middle Island Ck/O, permit term to May 11, 2027
STOKES, DONALD B, Sistersville: WVG416512, minor permit, discharging to Pursely Ck/Point Pleasant Ck/Middle Island Ck/Ohio, permit term to June 30, 2024
TRAD DILL, Sistersville: WVG417562, minor permit, discharging to Pond/UNT/Badger Rn/Pursley Ck/Point Pleasant Ck/ M, permit term to June 30, 2029

Nearby on the register

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

This public-records page covers NPDES permit WVG671061 for the MAYFIELD LP PIPELINE HYDROSTATIC DISCHARGE in Sistersville, West Virginia, held by ANTERO MIDSTREAM LLC, with a Minor Discharger class and Effective permit status. The page lists 5 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and it records no violation under EPA's effluent or single-event violation files for this permit.