D.C. Code § 8-105.13

(a) A list of the Industrial Users in significant noncompliance with the pretreatment standards and requirements in the preceding calendar year shall be published annually by WASA in a newspaper of general circulation that provides meaningful public notice within the jurisdiction served by WASA.
(b) The notification shall summarize the nature of the significant noncompliance and any enforcement action taken against the user during the same 12-month period.
(c) For the purposes of this section, a Significant Industrial User is in significant noncompliance with the pretreatment standards and requirements if its violation meets one or more of the following criteria and any Industrial User is in significant noncompliance if its violation meets the criteria in paragraph (3), (7), or (8) of this subsection:
(1) Chronic violations of wastewater discharge limits, which are violations in which 66% or more of all the measurements taken for the same pollutant parameter during a 6-month period exceed (by any magnitude) a numeric pretreatment standard or requirement, including instantaneous limits, as defined by 40 C.F.R. § 403.3(l);
(2) Technical Review Criteria (“TRC”) violations, which are violations in which 33% or more of all of the measurements taken for the same pollutant parameter during a 6 month period equal or exceed the product of the numeric pretreatment standard or requirement including instantaneous limits, as defined by 40 C.F.R. § 403.3(l) multiplied by the applicable TRC (TRC = 1.4 for Biochemical Oxygen Demand, TSS, fats, oil, and grease, and 1.2 for all other pollutants except pH);
(3) Any other violation of a pretreatment standard or requirement as defined by 40 C.F.R. § 403.3(l) (daily maximum, long-term average, instantaneous limit, or narrative standard) that WASA determines has caused, alone or in combination with other discharges, interference or pass through (including endangering the health of WASA or District personnel or the general public);
ollutants except pH);
(3) Any other violation of a pretreatment standard or requirement as defined by 40 C.F.R. § 403.3(l) (daily maximum, long-term average, instantaneous limit, or narrative standard) that WASA determines has caused, alone or in combination with other discharges, interference or pass through (including endangering the health of WASA or District personnel or the general public);
(4) Any violation of the terms of a wastewater discharge permit which remains uncorrected 45 days after notification of the violation is received by the user, or any failure to meet, within 90 days after the schedule date, a compliance schedule milestone contained in a District or local control mechanism or enforcement order for starting construction, completing construction, or attaining final compliance;
(5) Failure to provide required reports, such as baseline monitoring reports, 90-day compliance reports, periodic self-monitoring reports, and reports on progress with compliance schedules or orders, within 45 days after the due date;
(6) Failure to timely and accurately report an instance of noncompliance with the pretreatment standards and requirements;
(7) Any discharge of a pollutant that has caused imminent endangerment to human health, welfare, or to the environment or has resulted in WASA’s exercise of its emergency authority pursuant to 40 C.F.R. § 403.8(f)(1)(vi)(B) and § 8-105.12 to halt or prevent such a discharge; and
(8) Any other violation or group of violations, which may include a violation of best management practices, which WASA determines will adversely affect the operation or implementation of the local pretreatment program or which WASA otherwise considers significant in light of the circumstances.