Drug concentrations in wastewater treatment plant effluent, in ng/l. 1 nanogram (ng) = 0.001 microgram (µg)

Drug
BupropionCarbamazepine
Celecoxib Diazepam
Fexofenadine Fluconazole Metaxalone
PNEC calculated by industry
10000
1100
27300
—
—
PNEC 
calculated by 
academic 
scientists
420
2000
250
Company

Actavis Generics (owned by Teva)
 Mallinckrodt Inc Pharmaceuticals Group 
(SpecGx LLC)
Mylan Pharmaceuticals Inc
Pfizer*
Pfizer

Teva Pharmaceuticals (site sold to G&W 
Laboratories, Inc in 2015)
Teva Women's Health 
Watson Laboratories (Closed in 2011). Silarx 
(now owned by Lannett) moved on site in 
2013.

WWTP
 Town of Davie 
Wastewater 
Treatment Plant
Hobart 
Wastewater 
Treatment Plant 
Morgantown 
Utility Board 
Barceloneta 
Regional WWTP

Town 

Pembroke Pines FL

1076

500

17400

6989

NY

Morgantown

WV

Barceloneta

PR

Sellersville

PA

730

Little Miami WWTP Cincinnati

OH

436

Carmel Town 
Sewage District 2

NY

Carmel 

10600

Verapamil
–

State

Hobart 

Pennridge 
Wastewater 
Treatment 
Authority WWTP

Metoprolol Methadone Methocarbamol Phenytoin Temazepam
—
—

9883
1645

4770

5669

16400
17400

43842

Notes: * denotes samples taken before and after the phamaceutical manufacturing facility closed.
 Watson Laboratories bought Actavis in 2013 and changed its name to Actavis; in 2016, Actavis was purchased by Teva.

198

4119

554000
555000

2987

89463

Highest concentration from treatment plant 
with no drug manufactring waste

11904

17376

7790

248

76

7

3447

175

161

289

76

734

320 <80

41