Monthly Rates - For Residents


Monthly Rates for Residents

Regional San customers pay a monthly rate for wastewater conveyance and treatment services. Instead of receiving a separate bill, our monthly charge appears on customers’ sewer collection utility bill. Depending on the location of a customer’s home or business in our service area, there are four potential sewer collection utilities including the Sacramento Area Sewer District, City of Sacramento , City of West Sacramento, or City of Folsom.


5-Year Rate Table

We are currently in the midst of the largest upgrade to our wastewater
treatment plant since its inception. These upgrades—known as the EchoWater Project—must be completed and operational by 2023, and the construction cost alone is between $1.5 and $2.1 billion.

To continue funding this project, our monthly rate will increase in small increments through 2021. The annual amounts are shown in the table below. 


Current Monthly Rates

New Environmental Regulations Require Higher Levels of Wastewater Treatment

In response to the decline of the San Joaquin-Sacramento Delta ecosystem and concerns over ammonia, nitrates and pathogens, a series of tough new water quality requirements were imposed on us by the State of California through our discharge permit. Significant upgrades to our wastewater treatment plant must be completed by 2021-2023. These upgrades, known as the EchoWater Project, are expected to cost about $1.5 billion to build and approximately $50 million in additional yearly operations and maintenance costs.

Category Current Rate
Single-Family Residential $37.00/month for each
single-family residence
Multi-Family Residential $27.75/month for each
multi-family dwelling unit
$22.20/month for each
age-restricted dwelling unit
Commercial Basic rate ($37.00)
times factor in ordinance
Groundwater & Temporary
Flow = $783 per MG
TSS = $255 per 1,000 lbs.
BOD = $378 per 1,000 lbs.
TKN = $799 per 1,000 lbs.
Pathogens = $220 per MG domestic flow

For rate-related questions, please call: (916) 875-5555.


Current Rates for Liquid Waste Haulers

Waste Type Waste Disposal Site Rate per Gallon
Septage and Portable Toilet Waste SRWTP* Headworks or Receiving Station at Roseville/Watt 5.3¢
FOG SRWTP Biogas Enhancement Facility 9.6¢
FOG SRWTP Headworks or Receiving Station at Roseville/Watt 15¢

* SRWTP = Sacramento Regional Wastewater Treatment Plant

Note: The minimum monthly charge for any permitted Liquid Waste Hauler is $33/month for the purpose of recovering administrative costs. Billings based on 90% of tank capacity per discharge.


More Rate Information . . .

Learn more about your Monthly Rate Breakdown and Regional San’s Rate History.


Monthly Rate Breakdown

This pie chart shows the portion of the current Regional San monthly basic rate (for single-family residential) that is needed to pay for the existing treatment process versus the amount needed to pay for the EchoWater Project.


Rate History

Our rate history since 2005 is shown below. Beginning in 2011, significant revenue is needed to comply with Discharge Permit requirements over the next several years to build the EchoWater Project.