City of Napa Water Division
Napa, Napa County, California
Population reference
84,804 people; the city says its municipal system serves more than 85,000 people in Napa and adjacent areas.
Billing detail
Partial public detail found
Official destination
Open provider website ↗Provider-specific findings
Billing and account research from public material
Provider-specific research notes are displayed separately from fields that contain only an unavailable-information marker. Read qualifiers in each note and verify current account terms with the provider.
- Billing frequency
- Most customers are billed bimonthly, every two months.
- Rate structure
- Fixed meter-size service charge plus tiered single-family residential quantity charges billed per 1,000 gallons. Rates vary by customer class, are higher outside city limits, and may include high-elevation pumping surcharges. Annual rate increases were adopted through 2028.
- Wastewater and sewer calculation
- The City of Napa Water Division is a potable-water system; the reviewed Napa pages do not establish a universal city sewer charge, winter average, or water-intake percentage tie-in for this record.
- Meter reading
- Napa's municipal system uses customer meters and the new portal exposes consumption and historical usage. The reviewed sources do not identify a universal AMI/AMR platform or fixed transmission cadence.
- New-account deposit
- Napa code provides for a deposit that can be refunded with interest after discontinuation with no unpaid bills or after a satisfactory 12-month payment record. The reviewed sources did not expose one universal current residential deposit amount.
Context, not a score
How documentation coverage compares
This profile
71%
overview fields with research notes
California
67%
records with any overview detail
National index
50%
records with any overview detail
Coverage measures what this directory documented. It does not measure service quality, affordability, or regulatory compliance.
Research record
Partial public detail found
5 of 7 fields in this section contain provider-specific public detail in dataset August 1, 2026.
Documented
71%
Details not confirmed in the reviewed public material
- Residential cost reference
- Activation or transfer fee
“Not confirmed” means the directory did not identify a dependable public statement. It does not mean the provider has no policy or option.
Primary verification routes
- City of Napa Water Division public website ↗
Provider-controlled destination used to confirm current customer instructions.
- EPA Safe Drinking Water Information System ↗
Federal background on public water-system records and their limitations.