Hilton Head Island, SC: PFAS Detected in Mapped Water Systems
EPA data combined for 3 water systems mapped to this ZIP (largest mapped system: South Island Public Service District (sc0720001))
EPA records for the water systems mapped to 29928 in Hilton Head Island, SC contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water No drinking-water violations in EPA records since 2021.
- Lead The reported 90th-percentile lead result of 0.0021 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
- Flood 1,664 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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The critical alert on record for 29928 in Hilton Head Island stands alone - no high-priority findings appear in the same compiled data.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) HIGH
Your Water System
ZIP code 29928 in Hilton Head Island, South Carolina is mapped to the water system South Island Public Service District (sc0720001) (EPA ID: SC0720001). This system provides water to approximately 18,299 people from groundwater sources.
There are 3 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| South Island Public Service District (sc0720001) | SC0720001 | 18,299 | Groundwater |
| Hilton Head Public Service District 1 (0720006) | SC0720006 | 25,558 | Surface water |
| Broad Creek Public Service District (sc0720009) | SC0720009 | 3,481 | Surface water |
Other Water Quality Reports in South Carolina
- 29001 (Alcolu)
- 29002 (Ballentine)
- 29003 (Bamberg) - 3 violations recorded for mapped water systems
- 29006 (Batesburg) - 2 violations recorded for mapped water systems
- 29009 (Bethune)
- 29010 (Bishopville)
- 29014 (Blackstock)
- 29015 (Blair) - 8 violations recorded for mapped water systems
- 29016 (Blythewood) - 2 violations recorded for mapped water systems
- 29018 (Bowman)
- 29020 (Camden)
- 29021 (Camden)
- 29030 (Cameron)
- 29031 (Carlisle)
- 29032 (Cassatt)
- 29033 (Cayce)
- 29036 (Chapin) - 11 violations recorded for mapped water systems
- 29037 (Chappells)
- 29038 (Cope)
- 29039 (Cordova)
Nearby Water Quality Reports
- 29926 (Hilton Head Island) - 3 mi - 3 violations recorded for mapped water systems
- 29925 (Hilton Head Island) - 4 mi
- 29915 (Daufuskie Island) - 7 mi
- 29910 (Bluffton) - 9 mi - 3 violations recorded for mapped water systems
- 29905 (Beaufort) - 12 mi - 1 violation recorded for mapped water systems
- 31328 (Tybee Island, GA) - 12 mi - 13 violations recorded for mapped water systems
- 29909 (Okatie) - 12 mi - 3 violations recorded for mapped water systems
- 29906 (Beaufort) - 15 mi - 1 violation recorded for mapped water systems
- 29935 (Port Royal) - 16 mi - 1 violation recorded for mapped water systems
- 29904 (Beaufort) - 16 mi - 1 violation recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for South Island Public Service District (sc0720001) (SC0720001) on EPA.gov.
3 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 29928. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFOS, PFOA, PFBS, PFPeA.
Highest measured level: 0.0052 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (11) HIGH
Home & Infrastructure (6) MODERATE
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Hilton Head Island
Based on local data for ZIP 29928, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Hilton Head Island has 1,664 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 29928 was built around 1985. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 29928 safe to drink?
EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 29928 (primary system: South Island Public Service District (sc0720001)), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 29928's water come from?
The recorded water source for South Island Public Service District (sc0720001), a system mapped to ZIP code 29928, is Groundwater. This system serves approximately 18,299 people.
How can I get my water tested in Hilton Head Island?
If South Island Public Service District (sc0720001) supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 29928 tap water?
The Lead and Copper Rule record selected for 29928 reports a 90th-percentile lead result of 0.0021 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 29928?
29928 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Beaufort County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 29928's water?
Yes, PFAS have been detected in samples from water systems mapped to 29928. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
What does the NFIP claim history show for ZIP 29928?
FEMA records contain 1664 flood insurance claims filed in ZIP code 29928; the recorded rated-zone value (the most frequent one if there are several claims) is AE, which is claims evidence and may differ from the current FEMA map zone for a property. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Hilton Head Island, SC: PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/29928/
@misc{zipcheckup-report-29928,
author = {{ZipCheckup}},
title = {{Hilton Head Island, SC: PFAS Detected in Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/29928/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 29928
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 29926 | Hilton Head Island, SC | 2.9 mi | N/A | 3 |
| 29925 | Hilton Head Island, SC | 4.1 mi | N/A | 0 |
| 29915 | Daufuskie Island, SC | 7.5 mi | N/A | 0 |
| 29910 | Bluffton, SC | 8.9 mi | N/A | 3 |
| 29905 | Beaufort, SC | 11.8 mi | N/A | 1 |
| 31328 | Tybee Island, GA | 12.3 mi | A | 13 |
| 29909 | Okatie, SC | 12.4 mi | N/A | 3 |
| 29906 | Beaufort, SC | 14.9 mi | N/A | 1 |
| 29935 | Port Royal, SC | 15.8 mi | N/A | 1 |
| 29904 | Beaufort, SC | 16.5 mi | N/A | 1 |
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