Utility rates & providers in St. Johns County, FL

Illustrative monthly bill: City of St. Augustine (Duke Energy Florida + city water/wastewater + sanitation), 1,000 kWh & 5,000 gal — county utility customers differ

St. Johns County pairs a nationally known historic downtown (St. Augustine) with rapid coastal and northwest growth toward Jacksonville, so utility retail responsibility splits between city systems, the county utility department, and special districts.

Total estimated monthly utilities

$313.82

Estimated illustrative monthly utilities for St. Johns County are ~$313.82 (1,000 kWh + 5,000 gal assumptions). Average water bill estimate in this pattern: ~$63.88/mo at 5,000 gallons.

St. Augustine is our in-city anchor. St. Johns County Utility Department serves many addresses outside city limits with different volumetrics—do not assume this illustration applies countywide.

Data freshness: last verified 2026-04-14. County overview narrative last verified 2026-04-14.

Illustrative bill — see cards for jurisdiction notes
  • Electric $159.91 (51%)
  • Water $63.88 (20%)
  • Sewer $67.59 (22%)
  • Trash $22.44 (7%)

Utilities here are about 20% higher than the Florida city average, driven mainly by water.

  • In Florida, cooling demand often makes electric the largest share of the bill.
  • City-provided trash is billed at a monthly fee ($22.44 in our estimate).

Our modeled example follows the City of St. Augustine: Duke Energy Florida on the RS-1 tariff pattern, potable water and wastewater from the city’s adopted Exhibit A rate packet at 5,000 gallons, and a residential solid waste line item consistent with published news reporting (confirm current fees with the city).

If your mailing address says St. Augustine but you are on St. Johns County Utility Department water, use the county’s adopted schedules instead—city volumetrics do not transfer automatically across the boundary.

Utility breakdown by service

Line-item style summary for St. Johns County—figures are from the county overview below, not copied from a single city page. Jurisdiction notes, narrative, and official sources follow in each card.

Electricity

Confirmed

Confirmed — Duke Energy Florida RS-1 modeling for St. Augustine in-city illustration

Provider (illustrative)
Duke Energy Florida
Customer charge
$14.27/mo
Modeled energy
~$0.1456/kWh (summer first 1,000 kWh)
Assumed usage
1,000 kWh
Estimated monthly
$159.91

Duke serves most St. Augustine residential meters on Florida IOU schedules—compare clause riders and assistance programs on Duke’s consumer site.

Verify exceptions for condos, bulk master-metered buildings, and rare pockets with alternate arrangements.

Official sources

Water

Estimated

Estimated — City of St. Augustine FY2026 Exhibit A potable tiers at 5,000 gal

Provider (illustrative)
City of St. Augustine
Estimated monthly
$63.88

Derived from FY2026 Exhibit A minimum/base and tiered volumetric potable modeling on the city page—download the official PDF for exact meter classes.

St. Johns County Utility Department publishes separate retail water schedules for qualifying county customers—use county materials when the bill header says county utility, not city.

Historic districts and irrigation meters can add parallel accounts or surcharges.

Official sources

Sewer / wastewater

Estimated

Estimated — City of St. Augustine FY2026 wastewater tiers at 5,000 gal

Estimated monthly
$67.59

City page models base + volumetric commodity from Exhibit A; stormwater or reclaimed surcharges may bill separately.

County utility customers on pressurized sewer should follow the county’s volumetric tables rather than this city illustration.

Septic remains common in rural St. Johns—those parcels are outside pressurized sewer modeling.

Official sources

Trash & recycling

Estimated

Estimated — City residential solid waste reporting; confirm with Public Works

Illustrative monthly
$22.44

Solid waste fees move with adopted city budgets—confirm the current residential line item with St. Augustine Public Works / Utility Billing.

County or franchise programs may bill other St. Johns addresses differently.

Official sources

Summaries rely on Duke Energy Florida tariff PDFs, City of St. Augustine Exhibit A materials, St. Johns County utilities references, and Florida PSC consumer pages as of the last verified date. County retail utility customers, septic, irrigation-only meters, and multi-family bulk billing need separate confirmation.

Check Internet pricing & availability in St. Johns County

Internet service varies widely—many providers, different plans, introductory offers, and bundles make it hard to compare apples to apples. That's why we don't estimate internet on this page like we do for electric, water, sewer, and trash. Use our tool to compare providers for your address or ZIP code.

Total estimated monthly utilities

$313.82

County illustrative scenario

What changes your bill most?

  • Electric is about 51% of your estimated utilities here.
  • Every 100 kWh changes your total by about $14.56.
  • Each additional 1,000 gallons of water adds about $18.67 to your water and sewer bills combined (water ~$9.22 + wastewater ~$9.45).
  • How to save on utility bills in St. Augustine

Assumptions

  • Electric: 1,000 kWh/month
  • Water: 5,000 gallons/month

What these labels mean

  • Confirmed — From this area's rate schedule.
  • Benchmark — From an official typical bill or PSC comparative statistic; not every meter will match.
  • Delivery only — Regulated delivery charges only (e.g. Texas); supply varies by plan.
  • Estimated — From other or incomplete sources; use as a rough guide.
Sources

Full line-item breakdown: St. Augustine utility page. County overview cards above cite additional regional sources.

Wondering if solar makes sense for you? Try our solar payback calculator to find out.

Cities in St. Johns County

Estimated monthly utility totals

Totals use each city's modeled usage and tariffs on file—see the city page for electric, water, sewer, and trash breakdowns.

CityEst. total/mo
St. Augustine (illustrative pattern)$313.82

More in Florida

Florida utility costsElectric providers in FloridaSt. Augustine utility page

FAQ

We use base charges and per-unit rates from official provider and municipal sources for each city in St. Johns County. Electric often references Florida Power & Light (FPL) tariff or Florida PSC comparative statistics where applicable; water, sewer, and trash use city, county, or authority rate schedules. Each city page shows assumed usage (kWh, gallons) and source links.
In Florida, unincorporated county utility systems, special districts, and municipal utilities can bill very differently—even inside the same county. Trash may be city-contracted, county solid waste, or private subscription. Always match your bill to the provider named on the statement.
Each city page shows a 'last verified' date and links to official sources. County overview pages include additional sources for unincorporated service areas. Confirm current rates on the provider's or government's website before making decisions.
Use the county utility’s adopted water and sewer schedules instead. This illustration follows the City of St. Augustine’s Exhibit A packet for in-city qualifying accounts.
Coastal cities often combine high base charges with volumetric blocks. At 5,000 gallons the city’s adopted tiers can produce substantial combined water and wastewater line items—compare both sections of Exhibit A.

Learn more

For tips on understanding your bill, comparing cities, and how electric and utility rates work by state, see our blog. Compare St. Augustine with another city side-by-side, or see how we calculate estimates.