13.10.050 Schedule of equivalent residential units (ERU’s).
The following list of ERU values shall serve as the basis for calculating buy-in and new capacity charges. This list is derived from Table G2-1, page G2-6, Criteria for Sewage Works Design, Washington Department of Ecology.
|
Single-family residence |
1.00 ERU |
|
Townhouse |
0.85 ERU per unit |
|
Apartment |
0.70 ERU per unit |
|
Motels and hotels |
0.40 ERU per unit with kitchenette |
|
0.20 ERU per unit without kitchenette |
|
|
Restaurants and bars |
0.25 ERU per seat |
|
Shopping center |
0.60 ERU per 1,000 square feet |
|
Church |
0.02 ERU per seat |
|
Country club |
0.30 ERU per member |
|
Bowling alley |
0.45 ERU per lane |
|
Nursing home |
1.15 ERU per bed |
|
Home for aged |
0.60 ERU per bed |
|
Theatre (all types) |
0.03 ERU per seat |
|
Swimming pool |
0.06 ERU per person capacity |
|
Doctor and dentist office |
1.40 ERU per chair or examining room |
|
Manufacturing/Industrial – sanitary use only |
0.10 ERU per employee |
|
Industrial waste |
Independent ERU calculation |
|
Grocery store |
0.10 ERU per employee (no sink disposal) |
|
Grocery store |
1.30 ERU add on per sink disposal unit |
|
Laundromat |
0.90 ERU per machine |
|
Service stations – no service bays |
0.10 ERU per pumping station |
|
Service stations – with service bays |
0.05 ERU add-on per service bay |
|
Service stations – with wash bays |
0.35 ERU add-on per car wash bay |
|
Service stations – with wash bays |
0.60 ERU add-on per truck wash bay |
|
By custom facility (not fitting into any above type of facility): |
|
|
Washing machine |
0.20 ERU per machine (3 or more, use 0.90 ERU) |
|
Dishwasher |
0.03 ERU (home style – less than 2 machines) |
|
Bathtub |
0.10 ERU per tub |
|
Garbage disposal |
1.30 ERU per sink add-on |
|
Shower |
0.15 ERU per showerhead |
|
Washbasin |
0.05 ERU per sink |
|
Water closet (toilet) |
0.30 ERU per toilet |
Note: The minimum ERU value, for purposes of determining connection charges and fees, shall be 1 ERU.