NPDES Permit No. MA0100633 2019 Draft Permit - Authorization to Discharge

Sep 29, 2026

NPDES permit draft MA0100633 authorizes the City of Lowell, Massachusetts, to discharge treated effluent from the Lowell Regional Wastewater Utility and to discharge Combined Sewer Overflow (CSO) outfalls at nine locations to specified receiving waters within the Merrimack Watershed. It lists co-permittees, operational and reporting responsibilities, and the effective and expiration timeline. Part I details effluent limitations and monitoring requirements, including flow, CBOD5, TSS, pH, residual chlorine, Escherichia coli, dissolved oxygen, and nutrient-related parameters with sampling frequency and types.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages159

Reading Time6 h 41 min

AccessFree to download

Authorization to Discharge Under the National Pollutant Discharge Elimination System

Permit scope, co-permittees, and responsible departments

Effective date, expiration, and superseding permit

Part I: Effluent Limitations and Monitoring Requirements

Outfall and receiving waters

Effluent characteristics, limits, and sampling

NPDES Permit No. MA0100633 2019 Draft Permit Page 1 of 25 AUTHORIZATION TO DISCHARGE UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions of the Federal Clean Water Act, as amended,(33 U.S.C. §§1251 et seq.; the "CWA"), and the Massachusetts Clean Waters Act, as amended,(M.G.L. Chap. 21, §§ 26- 53), City of Lowell, Massachusetts is authorized to discharge from the facility located at Lowell Regional Wastewater Utility 451 1st Street Boulevard (Route 110) Lowell, MA 01850 And Combined Sewer Overflow (CSO) outfalls at 9 locations to receiving waters named Merrimack River, Beaver Brook, Concord River Merrimack Watershed in accordance with effluent limitations, monitoring requirements and other conditions set forth herein. The Towns of Chelmsford, Dracut, Tewksbury, and Tyngsborough are co-permittees for Part B, Unauthorized Discharges; Part C, Operation and Maintenance of the Sewer System, which include conditions regarding the operation and maintenance of the collection systems owned and operated by the Towns; and Part D, Alternate Power Source. Operation and maintenance of the sewer system shall be in compliance with the General Requirements of Part II and the terms and conditions of Part B, Part C and Part D of this permit. The Permittee and each co-permittees are severally liable under Part B, Part C and Part D for their own activities and required reporting with respect to the portions ofthe collection system that they own or operate. They are not liable for violations of Part B, Part C and Part D committed by others relative to the portions of the collection system owned and operated by others. Nor are they responsible for any reporting that is required of other Permittees under Part B, Part C and Part D. The responsible Town departments are: Town of Chelmsford Department of Public Works Sewer Division 9 Alpha Road Chelmsford, MA 01824 Town of Dracut Sewer Department 62 Arlington Road Dracut, MA 01826 Town of Tewksbury Department of Public Works Water and Sewer Division 1009 Main Street Tewksbury, MA 01876 Town of Tyngsborough Town Hall 25 Bryants Lane Tyngsborough, MA 01879 NPDES Permit No. MA0100633 2019 Draft Permit Page 2 of 25 This permit shall become effective on the first day of the calendar month immediately following 60 days after signature. 1 This permit expires at midnight, five years from the last day of the month preceding the effective date. This permit supersedes the permit issued on September 1, 2005. This permit consists of the cover pages, Part I, Attachment A (Freshwater Acute Toxicity Test Procedure and Protocol, February 2011), Attachment B (Freshwater Chronic Toxicity Test Procedure and Protocol, March 2013), Attachment C (Reassessment of Technically Based Industrial Discharge Limits), Attachment D (Industrial Pretreatment Program Annual Report Requirements), and Part II (NPDES Part II Standard Conditions, April 2018) . Signed this day of Ken Moraff, Director Water Division Environmental Protection Agency Region 1 Boston, MA Lealdon Langley, Director Division of Watershed Management Department of Environmental Protection Commonwealth of Massachusetts Boston, MA 1 Pursuant to 40 Code of Federal Regulations (C.F.R.) § 124. 15(b)(3), if no comments requesting a change to the Draft Permit are received, the permit will become effective upon the date of signature. NPDES Permit No. MA0100633 PART I 2019 Draft Permit Page 3 of 25 A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 1. During the period beginning on the effective date and lasting through the expiration date, the Permittee is authorized to discharge treated effluent through Outfall Serial Number 035 to the Merrimack River. The discharge shall be limited and monitored as specified below; the receiving water and the influent shall be monitored as specified below. | Effluent Characteristic | Effluent Limitation | | | Moni

FAQs

What discharge activities are authorized in this NPDES draft permit?

The permit authorizes discharge of treated effluent through specified outfalls and discharge of CSO outfalls at nine locations to named receiving waters in the Merrimack Watershed.

Who are the co-permittees, and how are responsibilities allocated?

Chelmsford, Dracut, Tewksbury, and Tyngsborough are co-permittees for specified parts of the permit, with operation, maintenance, and reporting responsibilities tied to the collection systems they own or operate.

When does the draft permit become effective and when does it expire?

The permit becomes effective on the first day of the calendar month immediately following 60 days after signature and expires at midnight, five years from the last day of the month preceding the effective date.

Sep 29, 2026

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