ZipCheckup grade for 29425: B.
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Charleston, SC (29425): PFAS Detected in Mapped Water Systems - 83/100
EPA data for Charleston Water System (sc1010001)
EPA records for the water systems mapped to 29425 in Charleston, 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 0.0035 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 3 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.
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Although the dataset for Charleston (29425) is limited in scope, one critical condition stands as the only elevated finding on record.
Score Breakdown
Overall Home Safety Score: 83/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) HIGH
Your Water System
ZIP code 29425 in Charleston, South Carolina is mapped to the water system Charleston Water System (sc1010001) (EPA ID: SC1010001). This system provides water to approximately 327,422 people from surface water sources.
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
- 29424 (Charleston) - <1 mi
- 29401 (Charleston) - <1 mi
- 29403 (Charleston) - <1 mi
- 29409 (Charleston) - 1 mi
- 29402 (Charleston) - 1 mi
- 29407 (Charleston) - 4 mi
- 29412 (Charleston) - 5 mi
- 29465 (Mount Pleasant) - 5 mi
- 29415 (North Charleston) - 5 mi
- 29419 (North Charleston) - 5 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Charleston Water System (sc1010001) (SC1010001) 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 29425. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFOS, PFPeA, PFOA, PFHxA, PFBS.
Highest measured level: 0.0065 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 (10) HIGH
Home & Infrastructure (2) OK
Cost & Community (6) OK
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Charleston
Based on local data for ZIP 29425, 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 Charleston has 3 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)
Service 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 29425 safe to drink?
EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 29425 (primary system: Charleston Water System (sc1010001)), 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 29425's water come from?
The recorded water source for Charleston Water System (sc1010001), a system mapped to ZIP code 29425, is Surface water. This system serves approximately 327,422 people.
How does Charleston water compare to the national average?
Charleston's Home Safety Score ranks better than 67% of U.S. ZIP codes, and lower than 54% of ZIP codes within South Carolina.
How can I get my water tested in Charleston?
If Charleston Water System (sc1010001) 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 29425 tap water?
The Lead and Copper Rule record selected for 29425 reports a 90th-percentile lead result of 0.0035 mg/L for a water system mapped to this ZIP (record date 2024-12-31). 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 29425?
29425 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Charleston 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 29425's water?
Yes, PFAS have been detected in samples from water systems mapped to 29425. 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 29425?
FEMA records contain 3 flood insurance claims filed in ZIP code 29425; the recorded rated-zone value (the most frequent one if there are several claims) is A14, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Charleston, SC (29425): PFAS Detected in Mapped Water Systems - 83/100. https://zipcheckup.com/report/29425/
@misc{zipcheckup-report-29425,
author = {{ZipCheckup}},
title = {{Charleston, SC (29425): PFAS Detected in Mapped Water Systems - 83/100}},
year = {2026},
url = {https://zipcheckup.com/report/29425/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 29425
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 29424 | Charleston, SC | <1 mi | B | 0 |
| 29401 | Charleston, SC | <1 mi | B | 0 |
| 29403 | Charleston, SC | <1 mi | B | 0 |
| 29409 | Charleston, SC | 1.0 mi | B | 0 |
| 29402 | Charleston, SC | 1.2 mi | N/A | 0 |
| 29407 | Charleston, SC | 3.5 mi | B | 0 |
| 29412 | Charleston, SC | 4.7 mi | B | 0 |
| 29465 | Mount Pleasant, SC | 4.9 mi | N/A | 0 |
| 29415 | North Charleston, SC | 5.0 mi | N/A | 0 |
| 29419 | North Charleston, SC | 5.0 mi | N/A | 0 |
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