Wastewater Design Flow Modifications.

GENERAL ASSEMBLY OF NORTH CAROLINA
SESSION 2025
H 1
HOUSE BILL 1156

Short Title: Wastewater Design Flow Modifications. (Public)
Sponsors: Representatives Almond, Echevarria, and Campbell (Primary Sponsors).
For a complete list of sponsors, refer to the North Carolina General Assembly web site.
Referred to: Agriculture and Environment, if favorable, Appropriations, if favorable, Rules,
Calendar, and Operations of the House
May 4, 2026
*H1156-v-1*
A BILL TO BE ENTITLED 1
AN ACT TO PROVIDE FL EXIBILITY IN THE CAL CULATION OF WASTEWAT ER 2
DESIGN FLOW RATES FOR PERMITTED WASTEWATER TREATMENT SYSTEMS. 3
The General Assembly of North Carolina enacts: 4
SECTION 1. G.S. 143-215.1(f3) reads as rewritten: 5
"(f3) The permittee for a wastewater system: 6
(1) May calculate its wastewater flows for new dwelling units discharging to 7
wastewater systems serving two or more dwelling units that have yet to be 8
connected and for which the permittee has allocated capacity, at 75 ga llons 9
per day per bedroom, or at a lower rate approved by the Department. 10
Department in accordance with subdivision (3) of this subsection. If 11
wastewater flows are calculated pursuant to this subdivision, the minimum 12
volume of sewage from each dwelling uni t is 75 gallons per day and each 13
additional bedroom above one bedroom increases the volume by 75 gallons 14
per day. 15
(2) Shall calculate its wastewater flows for new dwelling units discharging to 16
wastewater systems serving two or more dwelling units that have yet to be 17
connected and for which the permittee has not allocated capacity at 75 gallons 18
per day per bedroom, or at a lower rate approved by the Department. 19
Department in accordance with subdivision (3) of this subsection. For 20
wastewater flows calculated pursuant to this subdivision, the minimum 21
volume of sewage from each dwelling unit is 75 gallons per day and each 22
additional bedroom above one bedroom increases the volume by 75 gallons 23
per day. 24
(3) May calculate its wastewater flows for new dwelling units discharging to 25
wastewater systems serving two or more dwelling units that have yet to be 26
connected at a flow rate less than 75 gallons per day per bedroom if approved 27
by the Department based on the permittee demonstrating that the calculated 28
flow rate corresponds to the average actual flow experienced during the last 29
calendar year and that using this flow rate will not result in any adverse impact 30
on public health or the environment. The Department shall not approve any 31
flow rates for new dwelling units calculated at less than 55 gallons per day per 32
bedroom." 33
General Assembly Of North Carolina Session 2025
Page 2 House Bill 1156-First Edition
SECTION 2. There is appropriated from the General Fund to the Department of 1
Environmental Quality the sum of ten thousand dollars ($10,000) in nonrecurring funds for the 2
2026-2027 fiscal year to be used by the Department for the purpose of reviewing wastewater 3
design flow rates proposed by permitted wastewater treatment systems in accordance with 4
Section 1 of this act. 5
SECTION 3. This act becomes effective July 1, 2026. 6