Walnut, CA · Updated Oct 2026

What a Walnut house pays

Property tax, water, trash and energy from public rates. Look up your address to make it yours, and see how to pay less.

Sent only to free public map services to find who serves it. Not stored unless you save your house.

Example · a Walnut house

$14,958a year · $1,247 a month

Starts at $641,174 of value before exemptions. Typical use.

Property tax$7,444
1.174% of $641,174, less $7,000 homeowners' exemption
Flat charges on the tax bill$877
Sewer $303 · Walnut Lighting and Open Space Maintenance District No. 1 (most common rate: Zone 4 landscaping with street and in-tract lighting) $296 · LA County Measure W Safe Clean Water tax (median single-family parcel) $119 · LA County Fire Measure E special tax (estimate, median-size home) $128 · San Gabriel Valley Mosquito and Vector Control assessment $20 · Metropolitan Water District water standby charge (Three Valleys MWD) $12
Electricity and gas$3,505
523 kWh a month $2,637 · 35 therms $869
Water$1,233
13.21 units (CCF) a month on Walnut Valley Water District: water $103 a month
Trash$407
Basic service: 96-gallon refuse and organics carts, 70-gallon recycling cart, $34 a month
Home insurance$1,492
Typical premium $1,492

A typical Walnut house pays about $15,000 a year: $8,320 property tax and charges, $1,230 water, $410 trash, $3,510 electricity and gas, $1,490 home insurance. Estimated from public rates, not anyone's actual bill.

Rates checked Oct 22, 2026. Insurance: what you enter, or a typical premium until you do. Sources are listed at the bottom.

Ways to pay less

Nothing here applies to every house automatically. These are worth checking:

Seniors 65+: discounted trash service$22.05 a month instead of $33.93
A head of household 65 or older can get Valley Vista's senior discount: the basic service fee is $66.15 a quarter ($22.05 a month) instead of $101.79 ($33.93 a month).
How: Send Valley Vista's City of Walnut Senior Citizens Discount Application with a copy of your California driver's license or ID card and a current gas or electric bill; call (800) 442-6454.
Low-income households: trash discount$30.54 a month instead of $33.93
A head of household with a total annual income of $27,225 or less can get Valley Vista's low-income rate: $91.62 a quarter ($30.54 a month) instead of $101.79.
How: Apply to Valley Vista with the previous year's tax return, a utility bill and a California driver's license or ID card; call (800) 442-6454.
Free bulky item pickup
Walnut residents can contact Valley Vista Services any time during the year to schedule a free bulky item pickup, with an unlimited number of free pickups per year; prohibited items still apply.
How: Call Valley Vista Services at (800) 442-6454.
Elderly or disabled: free cart roll-out service
Valley Vista moves carts to and from the curb at no charge for elderly or disabled customers; others pay $39.97 a month for roll-out service.
How: Call Valley Vista Services at (800) 442-6454.
Low-income households: Suburban Water bill credit$11.14 a month credit
Suburban Water Systems' Customer Assistance Program in its San Jose Hills area, which includes portions of Walnut, gives qualifying residential customers a credit of $11.14 a month; the income limits follow the CPUC's CARE program.
How: Show a CARE-type discount on your electric or gas bill or fill out Suburban's self-verification form; renew every two years.
Low-income seniors over 62: Safe, Clean Water parcel tax exemptionNo Safe, Clean Water tax
Owners over 62 who live in the home and head a low-income household can apply for an exemption from the Safe, Clean Water Program special parcel tax; the FY 2027-28 limit is $106,600 for a 2-person household.
How: Submit the claim form to the Safe, Clean Water Program by May 1 each year; call 833-275-7297.
Low water use: reduced sanitation district charge
District No. 21 parcels with significantly lower water usage may be eligible for a reduced service charge; dischargers with verified low water usage, particularly seniors and retirees, may qualify.
How: Apply to the Sanitation Districts' low water rebate program.

Adjust to match your bills

What you know

Value before exemptionsUnder Prop 13 your assessed value starts at your purchase price and can rise at most 2% a year, so it is often far below market: use the assessed value on your tax bill. In the Rowland Unified part of Walnut the rate is 1.180461% rather than 1.17381%. The Lighting and Open Space Maintenance District charge depends on your zone: about $57 to $814 a year in most zones, $2,816.88 in Zone 9 (Three Oaks), and nothing outside the district.

I live here and have the Homeowners' exemption

Home insurance, a yearFrom your policy. We start at $1,492, NAIC data via the Insurance Information Institute; California figures from the California Department of Insurance.

Earthquake insurance, a yearSeparate from home insurance. Most owners don't have it.

Your use

Water, units a month

On your water bill. 1 unit (CCF) is 748 gallons. A typical Walnut house uses about 13.21.

Electricity, kWh a month

On your Southern California Edison bill. An electric car adds about 300 kWh.

Gas, therms a month (yearly average)

Money dates

Nov 30, 2026in 38 daysLast day to file a 2026 regular assessment appeal in LA County (filing runs July 2 to November 30).
Dec 10in 48 daysFirst property tax installment (due Nov 1) is late after Dec 10: 10% penalty.
Feb 15in 115 daysLast day for a first-time homeowners' exemption claim to get the full exemption for the year.
Apr 10Second property tax installment (due Feb 1) is late after Apr 10: 10% penalty plus $10.

Who serves this house

Water: Depends on your address; Walnut Valley Water District and other water utilities
Property tax: 1.17% of value; 2026-27 tax year, Los Angeles County
Garbage: Valley Vista Services; Valley Vista Services is Walnut's franchised hauler; standard household service is a 96-gallon refuse cart, a 96-gallon organics cart and a 70-gallon recycling cart, collected weekly.
Sewer: LA County Sanitation District No. 21 + County Sewer Maintenance District; County Sanitation District No. 21 encompasses all or portions of Walnut and collects its charge on the property tax roll; the County's Consolidated Sewer Maintenance District lists Walnut among the cities in its service areas.
Electricity: Southern California Edison; The City lists Southern California Edison as Walnut's electric utility.
Gas: SoCalGas; The City lists Southern California Gas Co. as Walnut's gas utility.

Pay or manage your bills

Your water

Source: Walnut Valley Water District imports 100% of its drinking water through Three Valleys Municipal Water District and the Metropolitan Water District: about 60% from MWD's Weymouth plant, 39% from TVMWD's Miramar plant and 1% groundwater.
Hardness: Total hardness averaged 234 ppm in the water from MWD's Weymouth plant and 97 ppm in the water from TVMWD's Miramar plant.
Lead: In tap samples from 30 sites in 2024 the 90th-percentile lead result was 0 ppb and no site was above the action level; the District's 2024 service line inventory found no lead or galvanized service lines requiring replacement.

Other CA cities

How these numbers are made

Individual bills are confidential in California, so we calculate yours from public rates and what you tell us.
Property tax: the tax rate shared by the Walnut Valley Unified tax rate areas, which hold about 70% (5,800) of Walnut's 8,329 single-family parcels in the LA County parcel data (rates from the Auditor-Controller's 2026-27 tax rate area lookup): the 1% levy plus the 2026-27 Walnut Valley Unified, Mt. San Antonio College and Metropolitan Water District rates from the LA County tax rate resolution (1.17381% in total), less the $7,000 homeowners' exemption, applied to the value you enter. The other 30% (2,529 parcels) are in Rowland Unified, whose bonds make the total 1.180461% (about $43 a year more at the typical value). Walnut levies no city property tax rate of its own. The starting value is the median 2026 roll value of single-family parcels; Prop 13 values of long-held homes are far below market.
Sewer and flat charges on the tax bill for 2026-27: County Sanitation District No. 21's $224 service charge (all but a handful of Walnut's single-family parcels fall in District No. 21 in the Sanitation Districts' boundary map) and the County Consolidated Sewer Maintenance District's $78.50 per sewage unit; Walnut's Lighting and Open Space Maintenance District No. 1, where we use the most common 2026-27 charge, $295.97 (963 lots in Zone 4, the largest zone; the engineer's report spreads $2.54 million over about 6,600 lots in 11 zones, with residential charges from about $57 to $814 and $2,816.88 in Zone 9, Three Oaks; parcels outside the district pay none); Measure W (2.5 cents per square foot of impermeable area), at the median for Walnut single-family parcels in the county's Safe Clean Water tax layer ($119.01); LA County Fire's Measure E special tax (6 cents per square foot of buildings plus the 2% yearly adjustment, on the median 2,084 sq ft single-family home in the County parcel file: about $127.54); the San Gabriel Valley Mosquito and Vector Control District's $20 per parcel; and the Metropolitan Water District's $12.21 standby charge for Three Valleys MWD lands. Not included, because they vary by parcel: the LA County flood control assessment, the trauma and emergency services tax and the LA County park district assessment (Measure A).
Trash: Valley Vista Services' basic service fee from February 1, 2026 ($101.79 a quarter, $33.93 a month), billed by Valley Vista, not on the tax bill. The basic fee is the same whatever cart size you choose.
Water: in the state water-system map about 64% of Walnut's single-family parcels are in Walnut Valley Water District (the default here), about 32% in Suburban Water Systems' San Jose Hills system and about 4% in Golden State Water's San Dimas system (not priced here; homes there see the default). Walnut Valley: single-family rates effective January 1, 2026 ($41.98 a month for a 5/8- or 3/4-inch meter; $4.02 per unit up to 6 units, $5.08 for 7-27, $6.75 above, 1 unit = 748 gallons); homes in pumping zones 2 and 3 pay $0.30 or $0.55 more per unit, not included. Its 2024 rate study schedules further increases each January 1 (for 2027: $47.44 a month and $4.55, $5.75 and $7.63 per unit). The starting use, 13.2 units a month, is the study's projected single-family use for 2025 (4,044,727 units) divided by its 306,132 single-family bills a year. Suburban: Schedule SJ-1 Tariff Area No. 1 rates effective August 15, 2026 ($16.97 a month for a 5/8 x 3/4-inch meter; $4.505 per 100 cubic feet up to 20 units a month, $5.057 above), plus the per-unit surcharges in effect now ($0.093 CAP, $0.091 WRAM, $0.279 and $0.257 reserve-account, and $0.560 and $0.020 interim-rate true-up surcharges) and the 0.70% CPUC fee; higher-elevation Tariff Areas 2 and 3 pay $0.18-0.53 more per unit.
Electricity: SCE's standard Domestic rate with SCE generation from the SCE/CPA joint rate comparison ($0.37392 per kWh in total, SCE rates as of June 1, 2026; its $195.56 average bill at 523 kWh equals that rate times the usage), plus SCE's $24.15 monthly Base Services Charge; Walnut is not a Clean Power Alliance member. Gas: SoCalGas's March 2026 average non-CARE bill ($72.39 at 35 therms), taken as including the $0.16-a-day customer charge (about $4.87 a month), so $4.87 a month plus $1.929 per therm. Both are averages; real bills vary by season. Insurance starts at the 2022 California average, the latest official one we found; it is four years old and likely understates a current premium, so enter your own.
Nothing here is legal, tax or insurance advice.

Sources

How Walnut compares

A typical Walnut house against the 110 California cities we cover, using the same default numbers as the total above.

Per year	Walnut	Median	Where it falls
Property tax rate	1.17%	1.13%	higher than 74 of the other 109 California cities we cover
Water	$1,233	$955	higher than 89 of the other 109 California cities we cover
Trash	$407	$438	lower than 63 of the other 101 California cities we cover
Electricity and gas	$3,505	$3,556	lower than 62 of the other 109 California cities we cover
Home insurance	$1,492	$1,492	in the middle of 108 other California cities we cover
Total	$14,958	$15,240	lower than 59 of the other 109 California cities we cover

Cities bill differently (some put trash on the tax bill, some cover more services), so a higher number isn't necessarily worse. The property tax rate is compared instead of dollars because house values differ.

Questions to ask your candidates

Each one starts from a number above. Any candidate can answer them.

1. Water

The fact: Water here costs about $1,233 a year at typical use, higher than 89 of the other 109 California cities we cover.

Ask: "Water here costs about $1,233 a year at typical use, higher than 89 of the other 109 California cities we cover. What drives that cost, and would you change anything?"

See who is running in your city →

Common questions about Walnut house costs

What is the property tax rate in Walnut?

About 1.17% of the value before exemptions a year (2026-27 tax year, Los Angeles County), plus flat charges on the same bill (Sewer $303, Walnut Lighting and Open Space Maintenance District No. 1 (most common rate: Zone 4 landscaping with street and in-tract lighting) $296, LA County Measure W Safe Clean Water tax (median single-family parcel) $119, LA County Fire Measure E special tax (estimate, median-size home) $128).

How much is property tax on a $500,000 house in Walnut?

About $6,664 a year on $500,000 of the value before exemptions with the homeowners' exemption, including $877 of flat charges.

How much is the water bill in Walnut?

About $103 a month for water at typical use (13.21 units, or 9,881 gallons a month) on Walnut Valley Water District.

How much does trash pickup cost in Walnut?

$34 a month for a house.

When is property tax due in Walnut?

Dec 10: First property tax installment (due Nov 1) is late after Dec 10: 10% penalty. Apr 10: Second property tax installment (due Feb 1) is late after Apr 10: 10% penalty plus $10.

Can seniors lower their property tax or bills in Walnut?

Yes. Seniors 65+: discounted trash service: A head of household 65 or older can get Valley Vista's senior discount: the basic service fee is $66.15 a quarter ($22.05 a month) instead of $101.79 ($33.93 a month).

Where can I get help paying utility bills in Walnut?

Low-income households: trash discount: A head of household with a total annual income of $27,225 or less can get Valley Vista's low-income rate: $91.62 a quarter ($30.54 a month) instead of $101.79. Apply to Valley Vista with the previous year's tax return, a utility bill and a California driver's license or ID card; call (800) 442-6454.

How much does a house in Walnut cost to run each year?

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