Aliso ViejoHome costs

Aliso Viejo water and sewer rates

At typical use (9 units, about 6,700 gallons a month), a Aliso Viejo house pays about $37 a month for water and about $52 for sewer: about $1,080 a year. Estimated from public rates, not anyone's actual bill.

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

Pay or manage it

Moulton Niguel Water District

Single-family rates effective January 1, 2026: a monthly service charge of $11.13 for a 3/4-inch meter, then per billing unit $2.76 for Tier 1 and $3.34 for Tier 2, each plus a 14-cent wholesale pass-through per unit. All water used by a single-family or multi-family residential customer within their calculated indoor water budget is billed at the Tier 1 rate and the outdoor water budget is billed at the Tier 2 rate.

Use a monthPrice per unit (CCF, 748 gallons)
Fixed charge$11.13 a month
0 to 8.95 units$2.90
8.95 to more$3.48
Source
Moulton Niguel Water District's water is imported from both Northern California and the Colorado River.
Lead
Moulton Niguel completed an inventory of all District-owned and customer-owned service lines and did not identify any lead components.

Sewer

Single-family wastewater: a monthly service charge of $28.88 plus $5.89 per person receiving service (effective January 1, 2026).

How Aliso Viejo compares with nearby cities

Water, a month

  1. Aliso Viejo$37
  2. Lake Forest · 6 mi$40
  3. Laguna Woods · 2 mi$69
  4. Mission Viejo · 5 mi$79
  5. San Juan Capistrano · 7 mi$79
  6. Laguna Beach · 3 mi$102

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

Sources

  1. Moulton Niguel Water District: service area
  2. Moulton Niguel Water District 2025 water quality report
  3. Moulton Niguel Water District: water and wastewater rates (archived copy)
  4. Moulton Niguel Water District: water budget-based rates (archived copy)

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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