Indiana Administrative Code › Title 327 - WATER POLLUTION CONTROL DIVISION › Article 8 - PUBLIC WATER SUPPLY › Rule 3.3 - Public Water System Quantity Requirement Standards › Section 3.3-2 - Calculation of public water system quantity requirement standards for average and peak demand conditions

Current through July 10, 2024
Authority: IC
				  13-14-8; IC
				  13-14-9; IC
				  13-15-1-2;
				  IC
				  13-15-2-1;
				  IC
				  13-18-3-1; IC
				  13-18-4-1
Affected: IC
				  13-11-2; IC
				  13-13-5-1;
				  IC 13-18-2
Sec. 2.
(a) The
				calculated average and peak flowrate values required for a water main extension
				to a public water system shall be equal to the average and peak daily consumer
				demands of the proposed additional service connections calculated as follows:
(1) The public water supply quantity
				requirement for the average daily consumer demand for residential service
				connections shall be determined by using a general average daily demand value.
				The following method shall be used to calculate average and peak supply
				quantity requirements:
ADCD = (General Avg) × PRSC
PDCD = (ADCD × PF) + FF
Where: ADCD = Average daily consumer demand in gallons per
				  residential service connection per day.
PDCD = Peak daily consumer demand in gallons per residential
				  service connection per day.
General Avg = General average daily consumer demand value of
				  five hundred (500) gallons per residential service connection per day. PRSC =
				  Proposed number of residential service connections.
PF = Peak daily consumer demand factor of two and one-half
				  (2.5).
FF = Fire flow demand value equal to the fire protection
				  flowrate provided by the public water system or zero (0) if the public water
				  system is not providing fire protection.
(2) The public water supply quantity
				requirement for the average and peak daily consumer demand for residential
				service connections may be determined from the monthly reports of operations
				(MROs) as follows:
(A) The following method
				may be used to calculate average and peak supply quantity requirements for a
				public water system that has been in operation for at least ten (10) years and
				has an accurate record of MROs for that time period:
ADCD = (Max Average) × PRSC
PDCD = (ADCD × PF) + FF
Where: ADCD = Average daily consumer demand in gallons per
				  residential service connection per day.
PDCD = Peak daily consumer demand in gallons per residential
				  service connection per day.
Max Average = Maximum average daily consumer demand in
				  gallons per service connection as calculated by:
Max Average = (ADCD10) ÷ (SC10)
Where: ADCD10 = The highest average daily demand as reported
				  on the MROs over the previous ten (10) year period.
SC10 = The number of service connections at ADCD10. PRSC =
				  Proposed number of residential service connections. PF = Peak daily demand
				  factor as calculated by the following:
PF = MDD10 ÷ 10YADD
Where: MDD10 = The maximum single day demand as reported on
				  the MROs over the previous ten (10) year period.
10YADD = The ten (10) year average daily demand as calculated
				  from the previous ten (10) year period.
FF = Fire flow demand value equal to the fire protection
				  flowrate provided by the public water system or zero (0) if the public water
				  system is not providing fire protection.
(B) If a public water service has not been in
				operation for at least ten (10) years, then all available MROs shall be used to
				determine the highest average daily demand (ADCD10), the number of service
				connections at ADCD10 (SC10), the maximum single day demand (MDD10), and the
				ten (10) year average daily demand (10YADD).
(3) The public water supply quantity
				requirement for the average and peak daily consumer demand for service
				connections described by Table 2-1 in subsection (b). The following method may
				be used to calculate the average and peak public water supply quantity
				requirements:
ADCD = DCF × PSC
PDCD = (ADCD × PF) + FF
Where: ADCD = Average daily consumer demand in gallons per
				  service connection per day.
PDCD = Peak daily consumer demand in gallons per service
				  connection per day.
DCF = Demand calculation factors as contained in Table 2-1
				  in subsection (b).
PSC = Proposed number of service connections.
PF = Peak daily consumer demand factor of two and one-half
				  (2.5).
FF = Fire flow demand value equal to the fire protection
				  flowrate provided by the public water system or zero (0) if the public water
				  system is not providing fire protection.
(4) If the average and peak daily consumer
				demand cannot be determined or calculated using the methods described in
				subdivision (1), (2), or (3), the determination of the average and peak daily
				consumer demand must be approved by the commissioner. The source and any
				calculations or assumptions must be approved by the commissioner. (b) The
				following demand calculation factors shall be used in the calculations under
				subsection(a)(3):
Table 2-1 Demand Calculation Factors (DCF)
Service Connection Description
DCF (gallons per day)
Airport
3 per passenger plus 20 per employee
Assembly Hall
3 per seat
Bar (without Food Service)
10 per seat
Beauty Salon
35 per customer
Bowling Alley (with Bar and/or Food)
125 per lane
Bowling Alley (without Food Service)
75 per lane
Bus Station
3 per passenger
Campground Organizational with Flush Toilets
40 per camper
Campground Organizational without Flush Toilets
20 per camper
Campground Recreational with Individual Sewer
							 Connection
100 per campsite
Campground Recreational without Individual Sewer
							 Connection
50 per campsite
Church with Kitchen
5 per sanctuary seat
Church without Kitchen
3 per sanctuary seat
Correctional Facilities
120 per inmate
Day Care Center
20 per person
Dentist
750 per chair plus 75 per employee
Factory with Showers
35 per employee
Factory without Showers
20 per employee
Food Service Operations Cocktail Lounge
35 per seat
Food Service Operations Restaurant, not Open 24 Hours
35 per seat
Food Service Operations Restaurant, Open 24 Hours
50 per seat
Food Service Operations Restaurant, open 24 hours and
							 Located Along an Interstate
70 per seat
Food Service Operations Tavern
35 per seat
Food Service Operations Curb Service (Drive-In)
50 per car space
Hospital, Medical Facility
200 per bed
Hotel
100 per room
Kennel
20 per animal enclosure
Mental Health Facility
100 per patient
Motel
100 per room
Nursing Home
100 per bed
Office Building
20 per employee
Outpatient Surgical Center
50 per patient
Picnic Area
5 per visitor
School Elementary
15 per pupil
School Secondary
25 per pupil
School with Dormitory
100 per bed
Service Station (Gas Station)
400 per restroom
Shopping Center
0.1 per square foot of floor space, plus
20 per employee
Swimming Pool Bathhouse
10 per swimmer
Theater Drive-In
5 per car space
Theater Inside Building
5 per seat