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The following surface water utility rates and charges are hereby established for all sites in the city as set forth in Tables 1 and 2 of this section. These rates and charges shall be in effect and assessed in all billings beginning January 1st of each year.

A. Residential Single/Duplex Unit. One ERU bimonthly for each single-family residential unit on a site. This uniform rate is based on each single-family residential site being equal to one equivalent residential unit (ERU). Each duplex on a site shall be charged one ERU.

B. Undeveloped Sites. Undeveloped sites shall not be charged under this system and structure of rates.

C. Other Sites. The charge for all other developed sites shall be based upon the total amount of measured impervious surface divided by one ERU, and rounded down to the nearest whole number. The actual total bimonthly service charge shall be computed by multiplying the measured ERUs for a site by the bimonthly rate per ERU. All sites will be charged for at least one ERU. Sites will be billed as a single-surface water account when a site contains multiple water meters and/or businesses on a site. Owners/managers will be responsible for any allocation of the surface water charge among tenants.

D. Special Surface Water Rate.

1. For qualifications, categories and other administrative rules related to special surface water rates, see LMC 13.20.080.

Table 1. Customer Class Calculation

Customer Class

Rate Calculation

Residential Single/Duplex Unit

1 ERU

Residential Multiple/Commercial Industrial Sites

Measured s.f. of impervious areas = number of billed ERUs

Special Surface Water Rates

1 ERU x Special Rate

Table 2. Surface Water Rates

Customer Classification

2023 Bimonthly Rate

2024 Bimonthly Rate

2025 Bimonthly Rate

2026 Bimonthly Rate

2027 Bimonthly Rate

2028 Bimonthly Rate

Residential Single/Duplex Unit

$29.90

$31.17

$32.49

$33.87

$35.31

$36.81

Residential Multifamily and Mobile

$29.90

$31.17

$32.49

$33.87

$35.31

$36.81

Commercial Industrial Sites

$29.90

$31.17

$32.49

$33.87

$35.31

$36.81

Special Surface Water Rate, Income Level Status A*

$11.96

$12.47

$13.00

$13.55

$14.12

$14.72

Special Surface Water Rate, Income Level Status B*

$13.46

$14.03

$14.62

$15.24

$15.89

$16.56

Special Surface Water Rate, Income Level Status C*

$14.95

$15.59

$16.25

$16.94

$17.66

$18.41

*or as calculated for units in a complex.

2. Preservation Mobile Home Park Rate. For mobile home parks that are preserved pursuant to a development agreement in accordance with Chapter 21.29 LMC, as follows:

a. Preservation for five to seven years: one-half ERU.

b. Preservation for seven years or more: one-quarter ERU. (Ord. 3426 § 3, 2022; Ord. 3345 § 3, 2019; Ord. 3223 § 6, 2016; Ord. 3026 § 2, 2013; Ord. 2846 § 1, 2010; Ord. 2723 § 4, 2008; Ord. 2686 § 1, 2007; Ord. 2657 § 2, 2006; Ord. 1853 § 3, 1991)