| Residential Customers with Water Meters |
| Metered Water Usage-Based Rates |
For customers with water meters, MSD charges in direct proportion to each customer's water usage, as measured by the customer's meter. The metered water usage method of determining sewer usage is a standard practice recognized by other sewer utilities.
MSD understands that not all metered water usage is returned to its sewer system and has made allowances for that event. Residential customers' water usage is based on their winter quarter water meter reading. Generally, the water that is used during that season is not used for lawn sprinkling or other outdoor purposes. MSD also makes provisions for commercial enterprises that may package water in their products, irrigate large parcels or lose water through evaporation in boilers and air conditioners.
Water that is returned to the sewer system and is the basis of the sewer charge is referred to as "Contributed Volume."
The following wastewater user charge rates took effect January 1, 2008.
| Rates for Metered Residential Customers |
| Unit of Measurement |
Rate |
| Base Charge |
$10.70/mo. |
| Metered Volume |
$1.88/hundred cubic feet (CCF) |
| Residential Customers without Water Meters |
| Room-and-Plumbing-Fixture-Based Billing |
Not all properties in the MSD service area have water meters. The District has adopted the same method of determining water usage as that used by the water provider. The following table illustrates the relationship of water usage to that of rooms and plumbing fixtures.
| Basis of Rates for Non-Metered Customers |
Unit
of
Measurement |
Estimated
Water Usage
in Gallons/day |
Estimated
Water Usage
in 100s of cubic feet
(Ccf)/month |
| Each room |
16 |
0.6464 |
| Each water closet (toilet) |
60 |
2.4343 |
| Each bath or shower |
50 |
2.0321 |
| Frontage foot |
n/a* |
n/a* |
|
*A parcel's street frontage, measured in feet, is used by water utilities to estimate the amount of water used for lawn irrigation. However, MSD does not charge for water that is not returned to the sewer system. |
| Rates for Unmetered Residential Customers |
| Unit of Measurement |
Rate |
| Base charge |
$10.70/mo. |
| Unmetered Volume |
Rooms
Water Closets
Baths/Showers |
$1.23/ea./mo.
$4.59/ea./mo.
$3.83/ea./mo. |
| Non-Residential Customers |
| Metered Water Usage-Based Rates |
MSD charges in direct proportion to each customer's water usage for those with water meters, as measured by the customer's meter. The metered water usage method of determining sewer usage is a standard practice recognized by other sewer utilities.
MSD understands that not all metered water usage is returned to its sewer system and has made allowances for that event. Residential customers' water usage is based on their winter quarter water meter reading. Generally, the water that is used during that season is not used for lawn sprinkling or other outdoor purposes. MSD also makes provisions for commercial enterprises that may package water in their products, irrigate large parcels, or lose water through evaporation in boilers and air conditioners.
Water that is returned to the sewer system and that is the basis of the sewer charge is referred to as "Contributed Volume."
The following wastewater user charge rates took effect January 1, 2008:
| Rates for Metered Non-Residential Customers |
| Unit of Measurement |
Rate |
| Base Charge |
$10.70/mo. |
| Compliance Charge |
$27.40/mo. |
| Metered Volume |
$1.88/hundred cubic feet (CCF) |
| Surcharges for Excess-Strength Sewage |
| Unit of Measurement |
Rate |
| Suspended solids over 300 mg/liter |
$218.90/ton |
| Biodegradable oxygen demand over 300 mg/liter |
$529.56/ton |
| Chemical oxygen demand over 600 mg/liter |
$264.78/ton |
| Note: These surcharges apply to sewage from commercial/industrial customers which is heavily laden with pollutants above the normal domestic strength and requires extra wastewater treatment. |
| Stormwater Changes Effective January 1, 2009 |
A new stormwater user charge will be used to calculate the January 2009 bills, which will be issued in February l, 2009. This charge is based on the impervious square footage on the parcel of land. Impervious area will not accept seepage and produces rainwater run-off to the sewer system.
Stormwater User Charge FAQ
Last Modified: 04 February 2009
