Seoul

KR · Seoul Arisu Waterworks Authority

Grade B

Grade B — one disclosed assumption, under 1% of the bill — comparable, with the assumption printed. How the grade is set →

Cost of 1,000 litres

KRW 822.00

standardized household · 15 m³ a month

A month, water

KRW 12330.00

KRW 147960 a year

A month, with wastewater

Held

sewerage VAT unresolved

How much of the bill is wastewater

New York 61%

Paris 57%

Sydney 51%

London 41%

Tokyo 41%

Hong Kong 37%

Singapore 34%

How much of the bill sits outside the volumetric rate

Perth 86%

Singapore 63%

Paris 57%

Seoul 42%

Dubai 25%

Sydney 17%

London 14%

Abu Dhabi 5%

New York 0%

Both comparisons are proportions, so they hold across currencies. The bills themselves do not, and are not compared.

Cost by volume

A household on 5,000 litres a month pays about 22% more per litre than one on 25,000, because the fixed charges spread over less water.

Where the water comes from

Surface

Seoul draws on the Han River through six treatment plants. No annual production figure with a year attached has been captured.

Sources, assumptions and data quality

ComparabilityGrade B

Tariff effective2026-01-01

ReconciledNot against an invoice

Reference connection15 mm meter. Arisu's rate table prices eight bores and 15 mm is the smallest, which is the §2.5 tie-break: the smallest size priced for residential service. The table does not use the word ordinary, so the choice is printed as scope rather than claimed as a designation. A larger bore is a different reference customer and a different basic charge, not a different reading of this one.

ValidationSource verified ✓ · Calculation verified — · Public reconciliation —. A utility publishes a tariff, not a worked example of this benchmark; an absent reconciliation is reported, not treated as a defect in the figure.

Publication · water supplyPublished

Publication · total water servicesHeld — sewerage VAT unresolved

ScopeReference account is a separately metered dwelling on a 15 mm connection. Arisu's own moving-settlement page shows apartments on a shared meter with the basic charge apportioned between households, which is a different reference customer.

ScopeThe 15 mm connection is assumed, not designated. See the open component state.

SourceSeoul Arisu Waterworks Authority — 요금업종별요율표 — Rate table by category

SourceRepublic of Korea — statute — 부가가치세법 제26조 제1항 제2호 (Value-Added Tax Act art. 26(1)2), with Basic Ruling 26-0-1