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How we calculated this

Read by an AI agent (a large language model) from the utility's official rate schedule, then audited by a second model against the same schedule. This bill is for the main service area; customers in 5 other rate areas (Inside Auburn, Inside Des Moines, Inside Edgewood, …) pay different rates.

Extracted by: Audit · Claude Opus 5.5 · 10/20/2026
Source:
Fixed charge, 5/8" meter: $18.37/mo
Water use: 16 ccf at $2.23 + 0.043 ccf at $4.22 per two-month bill = $35.86, or $17.93/mo
Total: $36.30/mo

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Utility profile · WA

LAKEHAVEN WATER AND SEWER DISTRICT Water Rates

LAKEHAVEN WATER AND SEWER DISTRICT supplies water to about 150,000 people in Federal Way, Lakeland South, and 3 other places in Washington. A typical household using 6,000 gallons a month pays an estimated $36.30 in the main service area, 38% below the national average.

Rates effective 2026-01-01

Updated Oct 2026

How much does water cost provided by LAKEHAVEN WATER AND SEWER DISTRICT?

Monthly Rate

$36.30 / month
Read and audited by AI against the official rate schedule ·

This bill is for the main service area; customers in 5 other rate areas (Inside Auburn, Inside Des Moines, Inside Edgewood, …) pay different rates.

How the bill adds up

Service charge
5/8" meter
$18.37
Water used
16 ccf × $2.23/ccf ÷ 2 (billed every 2 months)
$17.84
Water used
0.04278 ccf × $4.22/ccf ÷ 2 (billed every 2 months)
$0.09
Total $36.30

How does LAKEHAVEN WATER AND SEWER DISTRICT's water cost compare to its regional neighbors?

Monthly cost (6k gal) vs up to 10 nearest utilities with published rates. Click to navigate.

Where does LAKEHAVEN WATER AND SEWER DISTRICT provide service?

Population served and the municipalities covered by this utility's service area.

Boundaries from the EPA Water System Service Areas dataset. Not all utilities have mapped boundaries.

Population Served

148,809

Where does LAKEHAVEN WATER AND SEWER DISTRICT's water come from?

Supply and provider classification from EPA records.

Primary Source
SWP
Provider Type
Local Govt
PWSID
WA5341997

Named intake/well source and interconnections (who this utility buys from or sells to) aren't captured yet — tracked separately for a future update.

Is water affordable for LAKEHAVEN WATER AND SEWER DISTRICT's customers?

Annual bill as a share of median household income in the service area.

Water Burden

0.5% of income (annual)
of median area income · affordability threshold: 2%

We don't yet systematically track whether a utility offers income-based or sliding-scale pricing separate from its standard rates — tracked separately for a future update.

Where did this data come from?

This rate was extracted from LAKEHAVEN WATER AND SEWER DISTRICT's published tariff document by an AI research agent, then checked against a validation checklist before publishing. See the full methodology for how every utility on this site is sourced and scored.

Provenance

Extracted by: Audit · Claude Opus 5.5 · 10/20/2026
Confidence label: Model verified

Spot an error, or have a newer rate schedule?