Who needs to develop local limits?
The following POTWs are required by 40 CFR §403.5 (c) to develop local limits:
- POTWs required to implement an approved pretreatment program need to develop local limits, or demonstrate that they are not necessary
- Other POTWs where wastewater discharges from commercial and industrial facilities have caused interference or pass through, and such violation is likely to recur
- This requirement is contained in the POTW’s National Pollution Discharge Elimination System (NPDES) permit

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1. What are prohibited discharge standards?
2. What are categorical pretreatment standards?
3. What are local limits?
4. Who needs to develop local limits?
5. What is wastewater?
6. How is wastewater treated?
7. What if my sewer is not flowing normally?
8. How often should I clean my grease trap or grease interceptor?