How many wastewater treatment plants are there in West Virginia?

Klarifi tracks 228 publicly owned wastewater treatment plants in West Virginia with a combined average flow of 111 million gallons per day, serving about 829,991 residents. 24 of them treat more than 1 MGD and 1 more than 10 MGD.

What is the largest wastewater treatment plant in West Virginia?

Huntington WWTP in Huntington is the largest plant in West Virginia by average flow, treating about 10.72 MGD.

What treatment technologies are common in West Virginia?

47 of West Virginia's plants use lagoon systems and 8 have biogas or anaerobic digestion infrastructure, based on Klarifi's aerial imagery review.

How many NPDES permits in West Virginia are up for renewal?

1 permits held by West Virginia plants expire in 2026 and 3 in 2027. Renewals typically bring new limits and trigger upgrade projects.

Try for free Log in

Wastewater treatment plants in West Virginia

Name: Wastewater treatment plants in West Virginia
Creator: Klarifi
License: https://klarifi.io/terms-of-service

228 facilities · 111 MGD combined flow

Klarifi tracks 228 publicly owned wastewater treatment plants in West Virginia with a combined average flow of 111 MGD, serving about 829,991 residents. 24 plants treat more than 1 MGD and 1 more than 10 MGD; 47 use lagoon systems and 8 have digesters or biogas infrastructure. The largest is Huntington WWTP in Huntington at 10.72 MGD. 1 NPDES permits expire this year and 3 next year.

Every plant below links to a profile with average and design flow, the NPDES permit and its expiry, a three-year compliance snapshot and the capital projects planned in its city. Treatment technology and verified contacts are shown with a free Klarifi account. Showing facilities 1–200 of 228 by average flow — browse the rest with the page links below.

228 plant locations in West Virginia; dot size follows average flow. Boundaries: U.S. Census Bureau.

NPDES permits and renewals in West Virginia

Every plant discharges under an NPDES permit that is renewed every five years, usually with tighter limits. The renewal year is the year a plant budgets for upgrades.

All NPDES permits in West Virginia →15 permits expiring in 2028 →Find plants near you on the map →

Largest wastewater treatment plants in West Virginia

The 10 largest publicly owned wastewater treatment plants in West Virginia by average flow, with NPDES permit, expiry and three-year violation count. Source: EPA ICIS-NPDES via Klarifi.
Facility	City	Avg flow (MGD)	Design (MGD)	NPDES permit	Expires	Violations (3y)
Huntington WWTP	Huntington	10.72	—	WVL023159	Dec 2030	72
City Of Wheeling - Water Pollution Control Division	Wheeling	6.65	10	WV0023230	Jun 2010	130
Fairmont Wastewater Treatment Plant	Fairmont	6.18	—	WVL023353	Dec 2030	52
Clarksburg Sanitary Bd	Clarksburg	5.7	8	WV0023302	Apr 2015	584
Parkersburg Utility Board	Parkersburg	5.53	—	WVL023213	Dec 2030	3
South Charleston Wwtw	South Charleston	4.7	13	WV0023116	Jan 2012	26
Weirton, City Of	Weirton	3.77	—	WVL023108	Dec 2030	84
Princeton, City Of	Princeton	3.64	—	WVL023094	Dec 2030	21
Moorefield/hardy County Regional Wastewater	Moorefield	2.79	4.1	WV0106038	May 2026	18
Hurricane City Of	Hurricane	2.7	—	WVR030010	Sep 2030	79

Treatment technology for each plant is shown with a free Klarifi account. Create one →

The 50 largest plants in West Virginia →EPA enforcement actions in West Virginia →

West Virginia plants by treatment technology

Activated sludge and clarifiers (80)Lagoon systems (50)Chlorine disinfection (37)Oxidation ditches (37)UV disinfection (18)Anaerobic digesters and biogas (9)

All 228 plants in West Virginia

Facility	City	Flow (MGD)
Huntington WWTP	Huntington	10.72
City Of Wheeling - Water Pollution Control Division	Wheeling	6.65
Fairmont Wastewater Treatment Plant	Fairmont	6.18
Clarksburg Sanitary Bd	Clarksburg	5.7
Parkersburg Utility Board	Parkersburg	5.53
South Charleston Wwtw	South Charleston	4.7
Weirton, City Of	Weirton	3.77
Princeton, City Of	Princeton	3.64
Moorefield/hardy County Regional Wastewater	Moorefield	2.79
Hurricane City Of	Hurricane	2.7
Malden Public Service District	Charleston	1.99
Bridgeport Wastewater Treatment Plant	Bridgeport	1.87
Martinsburg City Of WWTP	Martinsburg	1.84
North Beckley Psd	Beckley	1.71
City Of St. Albans	Saint Albans	1.68
City Of Ronceverte	Ronceverte	1.47
Rocky Fork Wastewater Plant	Cross Lanes	1.44
Oh/ Inw/ Bh/ NE 001-004	Martinsburg	1.43
Weston City Of	Weston	1.18
Buckhannon Sewer Plant	Buckhannon	1.17
Nitro WWTP	Nitro	1.15
Shady Spring Psd	Beaver	1.1
Philippi City Of	Philippi	1.02
Keyser City Of	Keyser	1
Salt Rock Sewer Psd	Ona	1
Green Valley-Glenwood Psd	Princeton	0.96
Pea Ridge Public Svc	Barboursville	0.93
Crab Orchard/macarthur Psd	Macarthur	0.92
Oak Hill, City Of	Oak Hill	0.88
City Of New Martinsville	New Martinsville	0.87
Kanawha Public Service District	Chelyan	0.87
Kanawha Falls Psd	Deepwater	0.84
Elk-Pinch Public Servic Distri	Elkview	0.8
Welch City Of	Welch	0.79
Summersville, City Of	Summersville	0.78
Ripley WWTP	Ripley	0.7
White Oak Psd	Scarbro	0.7
Warm Springs Psd	Berkeley Springs	0.66
Milton Water Plant	Milton	0.66
Follansbee City Of	Follansbee	0.65
City Of Glenville	Glenville	0.62
Glenville Utility Water Treatment Plant	Glenville	0.62
Buffalo Creek Psd	Amherstdale	0.57
Bradley Psd	Bradley	0.57
Kingwood City Of	Kingwood	0.54
Oceana Town Of	Lynco	0.52
Sanitary Board	Barboursville	0.51
City Of Spencer	Spencer	0.47
Town Of Marmet	Marmet	0.46
Flatwoods-Canoe Run Public Service District	Gassaway	0.45
Richwood City Of	Richwood	0.44
Frankfort Public Service District	Patterson Creek	0.44
Salem City Of	Salem	0.43
City Of Petersburg	Petersburg	0.43
Mineral Wells Psd	Mineral Wells	0.42
Greater Harrison Co. Psd	West Milford	0.41
City Of Parsons	Parsons	0.4
City Of Gary/warehouse Project	Gary	0.39
Red Sulphur Psd	Peterstown	0.38
Sissonville Psd	Sissonville	0.37
Shinnston City Of WWTP	Shinnston	0.37
Belington City Of	Belington	0.36
Town Of Ansted	Ansted	0.36
Chester City Of	Chester	0.34
Union-Williams Psd	Waverly	0.34
Eleanor Town Of	Eleanor	0.33
Matewan Town Of	Matewan	0.33
Marlinton, Town Of	Marlinton	0.32
Town Of Chapmanville	Chapmanville	0.31
Wellsburg, City Of	Wellsburg	0.31
Boone County Psd	Danville	0.31
Clay Sanitation Plant	Clay	0.31
Beverly Town Of	Beverly	0.31
Thomas City Of	Thomas	0.31
City Of Pennsboro	Pennsboro	0.31
Rowlesburg,town Of	Rowlesburg	0.3
Romney WWTP	Romney	0.3
Corporation Of Harpers Ferry	Harpers Ferry	0.28
Craigsville Psd	Craigsville	0.28
Town Of Masontown	Reedsville	0.28
Logan County Psd	Peach Creek	0.28
Southern Jackson County Psd	Kenna	0.28
Point Pleasant Wastewater Treatment Plant	Point Pleasant	0.27
Logan City Of	Logan	0.27
Center Psd	Pineville	0.26
Mannington City Of	Mannington	0.26
Town Of West Union	West Union	0.25
Junior Town Of	Junior	0.25
Paden City WWTP	Paden City	0.24
Ravencliff-Mcgraws-Saulsville Psd	Mcgraws	0.24
Harrisville Town Of	Harrisville	0.24
St Mary'S City Of	Saint Marys	0.23
Hinton Sanitary Board	Hinton	0.23
Town Of Sophia	Sophia	0.23
Mcmechen City Of	Mcmechen	0.23
Bluefield, Sanitary Board Of	Bluefield	0.22
Claywood Park Psd-S. B. R. Pla	Parkersburg	0.21
Putnam Psd - Hometown WWTP	Hometown	0.21
City Of Winfield	Winfield	0.2
City Of Williamstown	Williamstown	0.19
Cameron, City Of	Cameron	0.19
New Haven Town Of	New Haven	0.18
Clarksburg Water Board	Clarksburg	0.18
Shepherdstown WWTP	Shepherdstown	0.17
Hamlin Psd	Hamlin	0.17
Pratt Town Of	Pratt	0.17
Shady Spring Psd	Ghent	0.16
Webster Springs Psd	Webster Springs	0.13
Town Of Newell	Newell	0.12
Beech Bottom/franklin Manor	Beech Bottom	0.12
Buffalo Town Of	Buffalo	0.11
Mason County Psd	Point Pleasant	0.11
Franklin, Municipality Of-Treatment Plant	Franklin	0.11
Town Of Elizabeth	Elizabeth	0.11
Harpers Ferry-Bolivar Psd	Harpers Ferry	0.11
Wayne, Town Of	Wayne	0.1
New Cumberland City Of	New Cumberland	0.1
City Of Mullens Sanitery Board	Mullens	0.1
Glasgow Town Of	Glasgow	0.1
Poca Sewer Plant	Poca	0.09
Hancock County Bus Garage	New Cumberland	0.09
Central Hampshire Psd-Booster Chlorination Treatment Plant	Romney	0.09
Town Of Lumberport POTW	Lumberport	0.09
Flemington Town Of	Flemington	0.08
Mason Town Of	Mason	0.08
Hamrick Psd	Hendricks	0.08
Hancock County Psd	New Cumberland	0.08
Middlebourne Town Of	Middlebourne	0.08
Belmont Town Of	Belmont	0.08
Bluewell Psd	Montcalm	0.08
Bethany Sanitation Board	Bethany	0.07
Enlarged Hepzibah Psd	Hepzibah	0.07
Town Of Fort Gay Wastewater Pond	Fort Gay	0.07
Central Boaz Public Service Di	Vienna	0.07
City Of Sistersville	Sistersville	0.07
Gilbert, Town Of	Gilbert	0.06
Town Of Kermit	Kermit	0.06
Union Town Of	Union	0.06
Ravencliff-Mcgraws-Saulsville Psd	Glen Rogers	0.06
Woods Ii Subdivision	Martinsburg	0.06
Town Of Durbin	Durbin	0.06
Paw Paw Town Of	Paw Paw	0.06
War WWTP	War	0.05
Town Of Meadow Bridge	Meadow Bridge	0.05
Putnam P S D-Peach Ridge Tank Booster Chlorination	Scott Depot	0.05
Grantsville WWTP	Grantsville	0.05
Canaan Valley Psd	Davis	0.04
Page-Kincaid Psd	Kincaid	0.04
Wardensville Town Of	Wardensville	0.04
Rainelle Water Department	Rainelle	0.04
Greenbrier Psd No 1	Lewisburg	0.04
West Hamlin Town Of	West Hamlin	0.04
Burnsville Public Utility Board	Burnsville	0.04
Cottageville Psd	Millwood	0.04
Worthington Town Of	Worthington	0.03
Matoaka WWTP	Matoaka	0.03
Mountwood Park WWTP	Waverly	0.03
Town Of Harman	Harman	0.03
Tyler County Psd-Treatment Plant	Friendly	0.03
Albright Sewer Dept.	Albright	0.03
Harvest Hills WWTP	Romney	0.03
Pax Town Of	Pax	0.03
Pine Grove Town Of	Pine Grove	0.02
Bramwell Psd	Bramwell	0.02
Moorefield Wastewater Collection System	Moorefield	0.02
Marshall County Sewerage District	Glen Dale	0.02
Capon Bridge WWTP	Capon Bridge	0.02
Davis Town Of	Davis	0.02
Hundred Operating Center	Hundred	0.02
Blacksville Sewage Department	Blacksville	0.02
Slab Fork Treatment Facilities	Slab Fork	0.02
Town Of Tunnelton	Tunnelton	0.02
Alderson Water Plant	Alderson	0.02
Bradley Psd - Walhonde Subdivision #2	Bradley	0.02
Pleasant View Psd	Branchland	0.01
Town Of Reedy	Reedy	0.01
Rolling Acres Subdivision	Pt. Pleasant	0.01
Sandstone Sewage Facility	Sandstone	0.01
Rupert Water Department	Rupert	0.01
Meadow Creek Psd	Meadow Creek	0.01
Northbrook WWTP	Falling Waters	0.01
Stevenwood Subdivision	Surveyor	0.01
Newburg WWTP	Newburg	0.0097
Prichard Public Service District	Prichard	0.0072
Town Of Sand Fork	Sand Fork	0.0066
Mt. Zion Psd	Grantsville	0.0061
Hillsboro Town Of-Treatment Plant	Hillsboro	0.0061
Home School Village	Bradley	0.0059
Auburn Village Subdivision	Bridgeport	0.0054
Big Bend Psd	Talcott	0.0052
Honeywood WWTP	Falling Waters	0.005
Valley Point Sanitary Sewer Collection And Treatment System	Bruceton Mills	0.005
Bennett Manor Addition	Quiet Dell	0.0047
Marlowe Garden Apts-Phase I	Falling Waters	0.0045
Upper Tract WTP	Upper Tract	0.0045
Berkeley County Public Service District	Bunker Hill	0.0042
Town Of Reedsville	Reedsville	0.0039
Highpointe Subdivision	Bunker Hill	0.0037
Community Of Helen	Helen	0.0031
Mingo County Psd	Naugatuck	0.0029

Page

Wastewater treatment in West Virginia: questions

Sources and methodology

Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.

Data refreshed October 26, 2026.

Wastewater terms: WWTP · POTW · MGD · NPDES permit · Activated sludge · Oxidation ditch · all terms

Cite this page

Journalists, researchers and educators are welcome to quote these figures. Please credit Klarifi as the source and link to this page.

Klarifi. “Wastewater treatment plants in West Virginia.” Updated October 26, 2026. https://klarifi.io/facilities/west-virginia

Need a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free