DAO 2021 - 19: UPDATED WATER QUALITY GUIDELINES (WQG) AND GENERAL EFFLUENT STANDARDS (GES) FOR SELECTED PARAMETERS

What are the 6 updated WQG and GES of DAO 2021-19

Ammonia as NH3-N

Boron

Copper as Dissolved Copper

Fecal Coliform

Phosphate as Phosphorus

Sulfate

CLASS AA - Ammonia as NH3-N (WQG)

0. 06 mg/L

CLASS A - Ammonia as NH3-N (WQG)

0. 06 mg/L

CLASS B - Ammonia as NH3-N (WQG)

0. 06 mg/L

CLASS C - Ammonia as NH3-N (WQG)

0. 06 mg/L

CLASS D - Ammonia as NH3-N (WQG)

0. 30 mg/L

CLASS SA - Ammonia as NH3-N (WQG)

0. 04 mg/L

CLASS SB - Ammonia as NH3-N (WQG)

0. 06 mg/L

CLASS SC - Ammonia as NH3-N (WQG)

0. 06 mg/L

CLASS SD - Ammonia as NH3-N (WQG)

0. 30 mg/L

CLASS AA - Ammonia as NH3-N (GES)

No Discharged Allowed (NDA)

CLASS A - Ammonia as NH3-N (GES)

2 mg/L

CLASS B - Ammonia as NH3-N (GES)

3 mg/L

CLASS C - Ammonia as NH3-N (GES)

4 mg/L

CLASS D - Ammonia as NH3-N (GES)

9 mg/L

CLASS SA - Ammonia as NH3-N (GES)

No Discharged Allowed (NDA)

CLASS SB - Ammonia as NH3-N (GES)

3 mg/L

CLASS SC - Ammonia as NH3-N (GES)

4 mg/L

CLASS SD - Ammonia as NH3-N (GES)

9 mg/L

CLASS AA - BORON (WQG)

0.75 mg/L

CLASS A - BORON (WQG)

0.75 mg/L

CLASS B - BORON (WQG)

0.75 mg/L

CLASS C - BORON (WQG)

0.75 mg/L

CLASS D - BORON (WQG)

3 mg/L

CLASS SA - BORON (WQG)

0.75 mg/L

CLASS SB - BORON (WQG)

0.75 mg/L

CLASS SC - BORON (WQG)

5 mg/L

CLASS SD - BORON (WQG)

20 mg/L

CLASS AA - BORON (GES)

NO DISCHARGED ALLOWED

CLASS A - BORON (GES)

4 mg/L

CLASS B - BORON (GES)

4 mg/L

CLASS C - BORON (GES)

4 mg/L

CLASS D - BORON (GES)

12 mg/L

CLASS SA - BORON (GES)

NO DISCHARGED ALLOWED

CLASS SB - BORON (GES)

4 mg/L

CLASS SC - BORON (GES)

25 mg/L

CLASS SD - BORON (GES)

100 mg/L

CLASS AA - COPPER AS DISSOLVED COPPER (WQG)

0.2 mg/L

CLASS A - COPPER AS DISSOLVED COPPER (WQG)

0.2 mg/L

CLASS B - COPPER AS DISSOLVED COPPER (WQG)

0.2 mg/L

CLASS C - COPPER AS DISSOLVED COPPER (WQG)

0.2 mg/L

CLASS D - COPPER AS DISSOLVED COPPER (WQG)

0.4 mg/L

CLASS SA - COPPER AS DISSOLVED COPPER (WQG)

0.2 mg/L

CLASS SB - COPPER AS DISSOLVED COPPER (WQG)

0.2 mg/L

CLASS SC - COPPER AS DISSOLVED COPPER (WQG)

0.2 mg/L

CLASS SD - COPPER AS DISSOLVED COPPER (WQG)

0.4 mg/L

CLASS AA - COPPER AS DISSOLVED COPPER (GES)

NDA

CLASS A - COPPER AS DISSOLVED COPPER (GES)

1 mg/L

CLASS B - COPPER AS DISSOLVED COPPER (GES)

1 mg/L

CLASS C - COPPER AS DISSOLVED COPPER (GES)

1 mg/L

CLASS D - COPPER AS DISSOLVED COPPER (GES)

2 mg/L

CLASS SA - COPPER AS DISSOLVED COPPER (GES)

NDA

CLASS SB - COPPER AS DISSOLVED COPPER (GES)

1 mg/L

CLASS SC - COPPER AS DISSOLVED COPPER (GES)

1 mg/L

CLASS SD - COPPER AS DISSOLVED COPPER (GES)

2 mg/L

CLASS AA - FECAL COLIFORM (WQG)

20 MPN/100 mL

CLASS A - FECAL COLIFORM (WQG)

50 MPN/100 mL

CLASS B - FECAL COLIFORM (WQG)

100 MPN/100 mL

CLASS C - FECAL COLIFORM (WQG)

200 MPN/100 mL

CLASS D - FECAL COLIFORM (WQG)

400 MPN/100 mL

CLASS SA - FECAL COLIFORM (WQG)

20 MPN/100 mL

CLASS SB - FECAL COLIFORM (WQG)

100 MPN/100 mL

CLASS SC - FECAL COLIFORM (WQG)

200 MPN/100 mL

CLASS SD - FECAL COLIFORM (WQG)

400 MPN/100 mL

CLASS AA - FECAL COLIFORM (GES)

NDA

CLASS A - FECAL COLIFORM (GES)

100 MPN/100 mL

CLASS B - FECAL COLIFORM (GES)

200 MPN/100 mL

CLASS C - FECAL COLIFORM (GES)

400 MPN/100 mL

CLASS D - FECAL COLIFORM (GES)

800 MPN/100 mL

CLASS SA - FECAL COLIFORM (GES)

NDA

CLASS SB - FECAL COLIFORM (GES)

200 MPN/100 mL

CLASS SC - FECAL COLIFORM (GES)

400 MPN/100 mL

CLASS SD - FECAL COLIFORM (GES)

800 MPN/100 mL

CLASS AA - Phosphate as Phosphorus (WQG)

0.025 mg/L

CLASS A - Phosphate as Phosphorus (WQG)

0.025 mg/L

CLASS B - Phosphate as Phosphorus (WQG)

0.025 mg/L

CLASS C - Phosphate as Phosphorus (WQG)

0.025 mg/L

CLASS D - Phosphate as Phosphorus (WQG)

0.05 mg/L

CLASS SA - Phosphate as Phosphorus (WQG)

0.1 mg/L

CLASS SB - Phosphate as Phosphorus (WQG)

0.2 mg/L

CLASS SC - Phosphate as Phosphorus (WQG)

0.2 mg/L

CLASS SD - Phosphate as Phosphorus (WQG)

0.4 mg/L

CLASS AA - Phosphate as Phosphorus (GES)

NDA

CLASS A - Phosphate as Phosphorus (GES)

1

CLASS B - Phosphate as Phosphorus (GES)

1.5

CLASS C - Phosphate as Phosphorus (GES)

4

CLASS D - Phosphate as Phosphorus (GES)

10

CLASS SA - Phosphate as Phosphorus (GES)

NDA

CLASS SB - Phosphate as Phosphorus (GES)

2

CLASS SC - Phosphate as Phosphorus (GES)

4

CLASS SD - Phosphate as Phosphorus (GES)

10

CLASS AA - SULFATE (WQG)

250 mg/L

CLASS A - SULFATE (WQG)

250 mg/L

CLASS B - SULFATE (WQG)

250 mg/L

CLASS C - SULFATE (WQG)

275 mg/L

CLASS D - SULFATE (WQG)

500 mg/L

CLASS SA - SULFATE (WQG)

- means no recommended values due to the natural occurrence in marine/brackish waters

CLASS SB - SULFATE (WQG)

- means no recommended values due to the natural occurrence in marine/brackish waters

CLASS SC - SULFATE (WQG)

- means no recommended values due to the natural occurrence in marine/brackish waters

CLASS SD - SULFATE (WQG)

- means no recommended values due to the natural occurrence in marine/brackish waters