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Read by an AI agent (a large language model) from the utility's official rate schedule.
Service charge: $22.14/mo Water used, 6,000 gal: $11.82/mo Required water fees and surcharges: $6.25/mo Total: $40.21/mo
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Utility profile · SC
SOUTH ISLAND PSD (SC0720001) supplies water to about 18,000 people in Hilton Head Island, South Carolina. A typical household using 6,000 gallons a month pays an estimated $40.21, 31% below the national average.
Updated Oct 2026
$33.96 water + $6.25 required fees ⓘ
| Service charge | $22.14 |
| Water used 6,000 gal × $1.97/kgal |
$11.82 |
| Required fees and surcharges | $6.25 |
| Total | $40.21 |
Monthly cost (6k gal) vs up to 10 nearest utilities with published rates. Click to navigate.
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.
Municipalities served
Supply and provider classification from EPA records.
Named intake/well source and interconnections (who this utility buys from or sells to) aren't captured yet — tracked separately for a future update.
Annual bill as a share of median household income in the service area.
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.
This rate was extracted from SOUTH ISLAND PSD (SC0720001)'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.
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