Parameter Groups
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# National Water Information System
# 2024/11/21
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# Date Retrieved: USGS Water Data for the Nation Help System
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parm_cd group parm_nm epa_equivalence result_statistical_basis result_time_basis result_weight_basis result_particle_size_basis result_sample_fraction result_temperature_basis CASRN SRSName parm_unit
5s 8s 150s 26s 0s 5s 0s 0s 9s 0s 10s 21s 10s
31730 Toxicity Mean survival of fathead minnows (Pimephales promelas) on day 7 of 7-day exposure to 100 percent effluent water sample, percent Not checked 7 Day %
31731 Toxicity Biomass of fathead minnows (Pimephales promelas) on day 7 of 7-day exposure to 100 percent effluent water sample, milligrams Not checked 7 Day mg
91076 Toxicity Silver, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), micrograms per liter USGS use and no use by EPA 7440-22-4 Silver ug/l
91077 Toxicity Mercury, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), micrograms per liter USGS use and no use by EPA 7439-97-6 Mercury ug/l
91078 Toxicity 1,4-Dichlorobenzene, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 106-46-7 p-Dichlorobenzene mg/l
91084 Toxicity Benzene, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 71-43-2 Benzene mg/l
91085 Toxicity Methyl ethyl ketone, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 78-93-3 Methyl ethyl ketone mg/l
91086 Toxicity Tetrachloromethane, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 56-23-5 Carbon tetrachloride mg/l
91087 Toxicity Chlorobenzene, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 108-90-7 Chlorobenzene mg/l
91088 Toxicity Trichloromethane, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 67-66-3 Chloroform mg/l
91089 Toxicity 1,2-Dichloroethane, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 107-06-2 1,2-Dichloroethane mg/l
91090 Toxicity 1,1-Dichloroethene, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 75-35-4 1,1-Dichloroethylene mg/l
91091 Toxicity Tetrachloroethene, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 127-18-4 Tetrachloroethylene mg/l
91092 Toxicity Trichloroethene, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 79-01-6 Trichloroethylene mg/l
91093 Toxicity Vinyl chloride, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), milligrams per liter USGS use and no use by EPA 75-01-4 Vinyl chloride mg/l
91094 Toxicity Arsenic, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), micrograms per liter USGS use and no use by EPA 7440-38-2 Arsenic ug/l
91095 Toxicity Barium, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), micrograms per liter USGS use and no use by EPA 7440-39-3 Barium ug/l
91096 Toxicity Cadmium, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), micrograms per liter USGS use and no use by EPA 7440-43-9 Cadmium ug/l
91097 Toxicity Chromium, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), micrograms per liter USGS use and no use by EPA 7440-47-3 Chromium ug/l
91098 Toxicity Lead, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), micrograms per liter USGS use and no use by EPA 7439-92-1 Lead ug/l
91099 Toxicity Selenium, waste/reagent water mixture leachate, EPA Toxicity Characteristic Leaching Procedure (1311), micrograms per liter USGS use and no use by EPA 7782-49-2 Selenium ug/l
99452 Toxicity pH, 100 percent effluent water sample on day 0 of 7-day exposure, unfiltered, standard units Not checked 0 Day Total pH std units
99453 Toxicity pH, 100 percent effluent water sample on day 2 of 7-day exposure, unfiltered, standard units Not checked 2 Day Total pH std units
99454 Toxicity pH, 100 percent effluent water sample on day 7 of 7-day exposure, unfiltered, standard units Not checked 7 Day Total pH std units
99455 Toxicity Dissolved oxygen (DO), 100 percent effluent water sample on day 0 of 7-day exposure, unfiltered, milligrams per liter Not checked 0 Day Total 7782-44-7 Dissolved oxygen (DO) mg/l
99456 Toxicity Dissolved oxygen (DO), 100 percent effluent water sample on day 2 of 7-day exposure, unfiltered, milligrams per liter Not checked 2 Day Total 7782-44-7 Dissolved oxygen (DO) mg/l
99457 Toxicity Dissolved oxygen (DO), 100 percent effluent water sample on day 7 of 7-day exposure, unfiltered, milligrams per liter Not checked 7 Day Total 7782-44-7 Dissolved oxygen (DO) mg/l
99458 Toxicity Specific conductance (SC), 100 percent effluent water sample on day 0 of 7-day exposure, unfiltered, microsiemens per centimeter at 25 degrees Celsius Not checked 0 Day Total uS/cm @25C
99459 Toxicity Specific conductance (SC), 100 percent effluent water sample on day 2 of 7-day exposure, unfiltered, microsiemens per centimeter at 25 degrees Celsius Not checked 2 Day Total uS/cm @25C
99460 Toxicity Specific conductance (SC), 100 percent effluent water sample on day 7 of 7-day exposure, unfiltered, microsiemens per centimeter at 25 degrees Celsius Not checked 7 Day Total uS/cm @25C
99461 Toxicity Hardness, 100 percent effluent water sample on day 0 of 7-day exposure, unfiltered, milligrams per liter as calcium carbonate Not checked 0 Day Total mg/l CaCO3
99462 Toxicity Hardness, 100 percent effluent water sample on day 2 of 7-day exposure, unfiltered, milligrams per liter as calcium carbonate Not checked 2 Day Total mg/l CaCO3
99463 Toxicity Hardness, 100 percent effluent water sample on day 7 of 7-day exposure, unfiltered, milligrams per liter as calcium carbonate Not checked 7 Day Total mg/l CaCO3
99464 Toxicity Acid neutralizing capacity (ANC), 100 percent effluent water sample on day 0 of 7-day exposure, unfiltered, milligrams per liter as calcium carbonate Not checked 0 Day Total mg/l CaCO3
99465 Toxicity Acid neutralizing capacity (ANC), 100 percent effluent water sample on day 2 of 7-day exposure, unfiltered, milligrams per liter as calcium carbonate Not checked 2 Day Total mg/l CaCO3
99466 Toxicity Acid neutralizing capacity (ANC), 100 percent effluent water sample on day 7 of 7-day exposure, unfiltered, milligrams per liter as calcium carbonate Not checked 7 Day Total mg/l CaCO3
99467 Toxicity Ammonia (NH3 + NH4+), 100 percent effluent water sample on day 0 of 7-day exposure, unfiltered, milligrams per liter as nitrogen Not checked 0 Day Total mg/l as N
99468 Toxicity Ammonia (NH3 + NH4+), 100 percent effluent water sample on day 2 of 7-day exposure, unfiltered, milligrams per liter as nitrogen Not checked 2 Day Total mg/l as N
99469 Toxicity Ammonia (NH3 + NH4+), 100 percent effluent water sample on day 7 of 7-day exposure, unfiltered, milligrams per liter as nitrogen Not checked 7 Day Total mg/l as N
99470 Toxicity Ammonia (un-ionized), 100 percent effluent water sample on day 0 of 7-day exposure, unfiltered, milligrams per liter as nitrogen Not checked 0 Day Total 7664-41-7 mg/l as N
99471 Toxicity Ammonia (un-ionized), 100 percent effluent water sample on day 2 of 7-day exposure, unfiltered, milligrams per liter as nitrogen Not checked 2 Day Total 7664-41-7 mg/l as N
99472 Toxicity Ammonia (un-ionized), 100 percent effluent water sample on day 7 of 7-day exposure, unfiltered, milligrams per liter as nitrogen Not checked 7 Day Total 7664-41-7 mg/l as N
99473 Toxicity Calcium, 100 percent effluent water sample on day 0 of 7-day exposure, filtered, milligrams per liter Not checked 0 Day Dissolved 7440-70-2 mg/l
99474 Toxicity Calcium, 100 percent effluent water sample on day 2 of 7-day exposure, filtered, milligrams per liter Not checked 2 Day Dissolved 7440-70-2 mg/l
99475 Toxicity Potassium, 100 percent effluent water sample on day 0 of 7-day exposure, filtered, milligrams per liter Not checked 0 Day Dissolved 7440-09-7 mg/l
99476 Toxicity Potassium, 100 percent effluent water sample on day 2 of 7-day exposure, filtered, milligrams per liter Not checked 2 Day Dissolved 7440-09-7 mg/l
99477 Toxicity Magnesium, 100 percent effluent water sample on day 0 of 7-day exposure, filtered, milligrams per liter Not checked 0 Day Dissolved 7439-95-4 mg/l
99478 Toxicity Magnesium, 100 percent effluent water sample on day 2 of 7-day exposure, filtered, milligrams per liter Not checked 2 Day Dissolved 7439-95-4 mg/l
99479 Toxicity Sodium, 100 percent effluent water sample on day 0 of 7-day exposure, filtered, milligrams per liter Not checked 0 Day Dissolved 7440-23-5 mg/l
99480 Toxicity Sodium, 100 percent effluent water sample on day 2 of 7-day exposure, filtered, milligrams per liter Not checked 2 Day Dissolved 7440-23-5 mg/l
99481 Toxicity Sulfate, 100 percent effluent water sample on day 0 of 7-day exposure, filtered, milligrams per liter Not checked 0 Day Dissolved 14808-79-8 mg/l
99482 Toxicity Sulfate, 100 percent effluent water sample on day 2 of 7-day exposure, filtered, milligrams per liter Not checked 2 Day Dissolved 14808-79-8 mg/l
99483 Toxicity Chloride, 100 percent effluent water sample on day 0 of 7-day exposure, filtered, milligrams per liter Not checked 0 Day Dissolved 16887-00-6 mg/l
99484 Toxicity Chloride, 100 percent effluent water sample on day 2 of 7-day exposure, filtered, milligrams per liter Not checked 2 Day Dissolved 16887-00-6 mg/l
