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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.

Extracted by: Audit · Claude Opus 5.5 · 11/03/2026
Source: 
Readiness to Serve fee: $31.40 per quarter = $10.47/mo
Water use: 8.021 units (100 cu ft) at $6.21 = $49.81/mo
Total: $60.28/mo
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Utility profile · MI

ROYAL OAK, CITY OF Water Rates

ROYAL OAK, CITY OF supplies water to about 57,000 people in Royal Oak, Michigan. A typical household using 6,000 gallons a month pays an estimated $60.28, 3% above the national average.

Rates effective 2026-07-01

Updated Nov 2026

How much does water cost provided by ROYAL OAK, CITY OF?

Monthly Rate

$60.28 / month
Read and audited by AI against the official rate schedule

How the bill adds up

Service charge $10.47
Water used
24.06 ccf × $6.21/ccf ÷ 3 (billed every 3 months)
 $49.81
Total $60.28

How does ROYAL OAK, CITY OF's water cost compare to its regional neighbors?

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

STERLING HEIGHTS, CITY OF
$32.82
STERLING HEIGHTS, CITY OF
STERLING HEIGHTS, MI · $32.82/mo · 8mi
CLAWSON
$36.03
CLAWSON
CLAWSON, MI · $36.03/mo · 2mi
DETROIT CITY OF
$36.16
DETROIT CITY OF
DETROIT, MI · $36.16/mo · 9mi
WARREN, CITY OF
$46.10
WARREN, CITY OF
WARREN, MI · $46.10/mo · 7mi
TROY
$52.69
TROY
TROY, MI · $52.69/mo · 5mi
BERKLEY
$55.11
BERKLEY
BERKLEY, MI · $55.11/mo · 2mi
HAZEL PARK
$59.44
HAZEL PARK
HAZEL PARK, MI · $59.44/mo · 4mi
BEVERLY HILLS
$59.96
BEVERLY HILLS
BEVERLY HILLS, MI · $59.96/mo · 4mi
ROYAL OAK, CITY OF
$60.28
ROYAL OAK, CITY OF
ROYAL OAK · $60.28/mo
FERNDALE
$65.99
FERNDALE
FERNDALE, MI · $65.99/mo · 4mi
BIRMINGHAM
$66.01
BIRMINGHAM
BIRMINGHAM, MI · $66.01/mo · 4mi

Where does ROYAL OAK, CITY OF 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

57,236

Municipalities served

Royal Oak

Where does ROYAL OAK, CITY OF's water come from?

Supply and provider classification from EPA records.

Primary Source
SWP
Provider Type
Local Govt
PWSID
MI0005830

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 ROYAL OAK, CITY OF's customers?

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

Water Burden

0.8% 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 ROYAL OAK, CITY OF'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 · 11/03/2026
Confidence label: Model verified

Spot an error, or have a newer rate schedule?