Modesto Sewer Connection Fee Calculator

Utilities and Infrastructure California 3 Minutes Read ยท published February 10, 2026 Flag of California

In Modesto, California new home builders and homeowners must plan for sewer connection fees, permits, and inspections before construction or final occupancy. This guide explains how the city typically calculates capacity and connection charges, what documentation to gather, permit and payment steps, and where to confirm exact amounts with official Modesto resources [1][2].

How the calculator works

The calculator estimates one-time sewer connection and capacity fees based on meter size, number of dwelling units, and fixture units or Equivalent Dwelling Units (EDUs). Typical inputs are:

  • Service address and parcel number
  • Proposed building type and number of dwelling units
  • Meter size and proposed water demand (fixtures/fixture units)
  • Applicable per-EDU or per-meter fees from the city fee schedule

Calculation steps (conceptual): multiply the number of EDUs by the per-EDU capacity fee, add the connection permit fee and any inspection or frontage improvement costs, then apply any credits or offsets documented by the city.

Use official fee schedules to get an exact total.

Typical fee components

  • Capacity (impact) fee per EDU
  • Connection permit and inspection fees
  • Trench, lateral, or mains extension costs (applicant pays construction costs)
  • Right-of-way, encroachment, or frontage improvement fees where required

Penalties & Enforcement

Enforcement of sewer connection, illegal discharge, and unpermitted work is handled through city ordinances and the Utilities/Code Enforcement departments. Specific fines and penalties are set out in the city municipal code or fee resolutions; if a dollar amount or daily rate is not listed on the cited page it is noted below as "not specified on the cited page." [2]

  • Monetary fines: not specified on the cited page; consult the municipal code or current fee schedule [2]
  • Escalation: first and repeat offence procedures are defined by ordinance or administrative penalties; specific escalation amounts are not specified on the cited page
  • Non-monetary sanctions: orders to cease work, mandatory corrective measures, possible civil actions, and abatement through the courts are available
  • Enforcer: City of Modesto Utilities and Code Enforcement divisions; inspection and complaint pathways are handled by Development Services/Utilities
  • Appeals: appeals or administrative review procedures exist per municipal rules; specific time limits for appeal are not specified on the cited page and should be confirmed with the listed department [2]
Report suspected illegal connections promptly to City Utilities for inspection.

Applications & Forms

  • Sewer connection permit application - see Development Services/Utilities for the current application and submittal instructions [1]
  • Fee payment: pay at permit issuance; some fees may require deposit or full payment prior to construction
  • Submission method: typically online or in-person at Development Services; confirm via the official city permit page [1]

Action steps

  • Gather plans, parcel number, and fixture counts
  • Contact City of Modesto Development Services/Utilities to request a formal fee estimate [1]
  • Submit permit application and pay required fees before commencing work
  • Schedule inspections and keep records of approvals and receipts

FAQ

How is a sewer connection fee calculated?
The fee is typically the sum of a per-EDU capacity charge plus connection and inspection fees; consult the city fee schedule or request a calculation from Development Services.
When must I pay the fee?
Fees are usually due at permit issuance or prior to final approval; confirm timing on the permit application page or with Utilities.
Can I appeal a fee or request a credit?
Appeals or credits (for previous service credits or existing capacity) are subject to city policy; contact Development Services for procedures.

How-To

  1. Collect project documents: site plan, floor plans, parcel number, and proposed fixtures.
  2. Contact City of Modesto Development Services/Utilities to request an official sewer fee estimate [1].
  3. Complete and submit the sewer connection permit application with required attachments and pay the listed fees.
  4. Schedule required inspections and complete any required public works or frontage improvements.
  5. Obtain final sign-off from Utilities before final occupancy.

Key Takeaways

  • Estimate fees early using meter size and EDUs to avoid budget surprises
  • Obtain permits and pay fees before starting sewer work
  • Noncompliance can trigger orders and enforcement by the city

Help and Support / Resources

  1. [1] City of Modesto - Utilities
  2. [2] City of Modesto Municipal Code (Municode)

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