On March 5, 2021, the Division of Drinking Water (DDW) issued the final Notification Level (NL) and Response Level (RL) for perfluorobutane sulfonic acid (PFBS).
The final NL is 0.0005 mg/L = 500 ng/L
The final RL is 0.005 mg/L = 5,000 ng/L
Enclosed ( pfbs_nl_issuance_03052021_FINAL_signed) is DDW’s notice of the final NL and RL.
