Dental Category 40 CFR 441

Dental Amalgam Rule for Dental Dischargers 40 CFR 441

DentistEPA promulgated 40 CFR Part 441 Effluent Limitations Guidelines and Standards for the Dental Category, on June 14, 2017 with an effective date of July 14, 2017. The new rule regulates mercury containing wastewater discharged from dental facilities to a Publicly Owned Treatment Works (POTW) or municipal wastewater treatment plants (WWTP).

Existing sources are those dental dischargers in operation prior to July 14, 2017 and must submit to the Control Authority a one-time compliance report by October 12, 2020. Any dental practice that begins operation on or after July 14, 2017 is a new source and must comply with the Rule prior to opening. Please see the Fact Sheet for further details on requirements for equipment, best management practices, reporting/record keeping and exemptions to the Rule.

If you are a dental discharger in Asheboro and subjected to this rule, please fill out the One-Time Compliance Report 
Return by mail to:
Technical Services
PO Box 1106
Asheboro, NC 27204
Return by email to:
Sarah Laughlin

For more information and to read the rule in its entirety please view the Dental Effluent Guidelines.
For questions regarding this rule please see FAQ's below. If you need assistance in filling out the One-Time Compliance Report please contact Sarah Laughlin at (336) 672-0892 ext 218.

Where should dental dischargers send their one-time compliance report?

Is there a website where I can submit my one-time compliance report electronically?

Who must comply with this rule?

What are the basic requirements of the rule?

What are the compliance deadlines?

If the dental discharger transfers ownership, what are the deadlines for a new owner to submit a one-time compliance report?

Does this rule require standards for the type of amalgam separator I install?

Do I have to replace my existing separator?

What are the correct dates that are relevant to the grandfathering provision in  441.30(a)(1)(iii)?

I have a wastewater retaining tank technology that collects all amalgam process wastewater and my dental facility does not discharge any amalgam process wastewater to a POTW. Am I exempt from the Dental Office Category Rule?

My dental facility has a technology that removes amalgam from wastewater as efficiently as an amalgam separator, but it is a different type of device, and therefore does not qualify to meet the ISO standard for amalgam separators. Does this device satisfy the requirements of this rule?

Does this rule have recordkeeping requirements for dental dischargers?

Does this rule have inspection or maintenance requirements for dental dischargers?

My practice is in compliance with the standards in the rule and has submitted a one-time compliance report. It is now changing ownership. Do I or the new owner need to submit a new one-time compliance report?

Does the final rule prohibit the use of oxidizing or acidic cleaners in dental unit water lines, chair-side traps, and vacuum lines?

Does the prohibition on the use of oxidizing or acidic cleaners in dental unit water lines apply to cleaners used in the water supply lines that connect to items such as handpieces, ultrasonic scalers or air/water syringes?

Is the amalgam collected in the separator considered a hazardous waste under the Resource Conservation and Recovery Act (RCRA)?

Where can I find more information?