MontclairHome costs

Montclair water and sewer rates

At typical use (9 units, about 6,700 gallons a month), a Montclair house pays about $57 a month for water and about $43 for sewer: about $1,200 a year. Estimated from public rates, not anyone's actual bill.

Who supplies water to Montclair houses, what it costs, and how the sewer charge works.

Pay or manage it

Monte Vista Water District

Monte Vista Water District rates effective January 1, 2026: a Readiness-to-Serve charge by meter size, billed every other month, plus budget-based tiered rates per unit (1 unit equals 100 cubic feet equals 748 gallons) for single-family residential customers.

Use a monthPrice per unit (CCF, 748 gallons)
Fixed charge$30.93 a month
0 to 8.535 units$2.77
8.535 to more$4.99
Source
In 2025 approximately 79% of MVWD's water supply was produced from a series of aquifers known collectively as the Chino Groundwater Basin.
Violations
The District reports its system did not have any violations nor exceed maximum contaminant levels or any other water quality standard.

Sewer

The City bills single-family sewer at a flat $86.24 for two months, on the same bill as trash.

How Montclair compares with nearby cities

Water, a month

  1. Chino · 7 mi$48
  2. Pomona · 4 mi$56
  3. Montclair$57
  4. La Verne · 5 mi$78
  5. Ontario · 6 mi$79
  6. Claremont · 4 mi$115

Water only, at each city's typical use; sewer is left out because some cities bill it on the tax bill.

Dates

WhenWhat
Due date on each billPayments not received by 6:00 p.m. on the due date are charged 10% of any unpaid balance on the City trash and sewer bill.

Sources

  1. City of Montclair: billing and rates for trash and sewer
  2. Monte Vista Water District: water rates
  3. Monte Vista Water District 2025 water quality report

Checked October 28, 2026. Every number here comes from the public sources listed, matched by our checker.

Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.

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