EBMUD's Wastewater Control Ordinance regulates wastewater discharges into our wastewater system and includes discharge limits (local limits) for select pollutants.
Wastewater Control Ordinance
EBMUD's Wastewater Control Ordinance provides legal authority for EBMUD to implement the pretreatment program. The ordinance establishes regulations and charges for the collection, treatment, and disposal of wastewater, as well as penalties for violations.
| Document | Type | Size |
|---|---|---|
| EBMUD's Wastewater Control Ordinance | <1 MB |
Wastewater Discharge Limits
Some industrial customers of EBMUD may also be subject to federal regulations for specific categories of businesses. These "categorical industries" are subject to additional regulations that include discharge limits (pretreatment standards) for pollutants specific to the category. If a pollutant has both a local limit and federal limit, the more stringent limit is applied. The federal regulations can be viewed on the U.S. EPA website by scrolling down to "Subchapter N - Effluent Guidelines and Standards" and selecting "Parts 400 - 424" or "Parts 425 - 471".
EBMUD Local Limits
| Arsenic | 2 mg/L |
| Cadmium | 1 mg/L |
| Total Toxic Organics (TTOs) | 2.1 mg/L |
| Chromium (total) | 2 mg/L |
| Copper | 5 mg/L |
| Cyanide | 5 mg/L |
| Iron | 100 mg/L |
| Lead | 2 mg/L |
| Mercury | 0.05 mg/L |
| Nickel | 5 mg/L |
| Oil and Grease (animal/vegetable) |
300 mg/L |
| Oil and Grease (mineral) | 100 mg/L |
| pH | not less than 5.5 S.U. |
| Phenolic compounds | 100 mg/L |
| Silver | 1 mg/L |
| Temperature | 150°F |
| Zinc | 5 mg/L |
mg/L - milligrams per liter
S.U. - standard units
Total Toxic Organics (TTOs) - TTO is the summation of compounds defined as "TTO" in 40 CFR 413.02(i), excluding 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) - "dioxin".