Short answer: No measured result is above a legal limit. Rock Hill City of (SC4610002) serves 89,850 residents.
EPA lists this system for the city. Your water bill or annual water quality report names your actual supplier.
Source: EPA SDWIS 2026Q2.
ROCK HILL CITY OF (SC4610002) (EPA PWSID SC4610002) delivers surface water to 89,850 residents. This report reflects 29 individual PFAS result(s) from the source UCMR5 observations and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.
0health-based violations in the last 10 years
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit.
No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.
Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.
lead 2 µg/L, below the 15 µg/L action level
PFHxA 4.4 ng/L, below the 400000 ng/L state limit (+1 more PFAS detected)
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Each card names which Rock Hill findings its current certification covers, and which it doesn't.
As an Amazon Associate, PurityMap earns from qualifying purchases. A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. Affiliate disclosure.
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Rock Hill, PFAS were detected below their limits, and PFPeA 5.9 ng/L with no federal or state limit; the lead 90th-percentile result was 2 µg/L against the 15 µg/L action level. ROCK HILL CITY OF (SC4610002) (PWSID SC4610002) has a Purity Score of 98/100 (confidence: moderate), assessed at the water-system level and computed only from contaminants that were measured. Water can change in your own pipes, so a certified test is the only way to know what comes out of your tap.
ROCK HILL CITY OF (SC4610002) (PWS ID SC4610002) is the public water system on record for Rock Hill, South Carolina, serving about 89,850 people. Confirm the utility on your water bill before acting on a specific finding.
Surface water (primary source of record in EPA SDWIS).
In EPA's UCMR 5 testing (2023-10-10 to 2024-07-09), PFHxA was detected at 4.4 ng/L, below the 400,000 ng/L state limit. PFPeA (5.9 ng/L) was also detected; it has no federal or state limit.
ROCK HILL CITY OF (SC4610002)'s most recent lead 90th-percentile result (2021–2023) was 2 µg/L, below the 15 µg/L action level. That figure comes from sampled homes; lead usually enters from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
PurityMap's current record for Rock Hill holds 31 findings: 2 detected within the reference, 1 detected with no limit and 28 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
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| Contaminant | Result | Benchmark | Sampled | Source |
|---|---|---|---|---|
| Lead (90th percentile) | 2 µg/L | 15 µg/L federal action level | 2021–2023 monitoring period | Lead & Copper Rule 90th-percentile: ROCK HILL CITY OF (SC4610002) (SC4610002) |
| Perfluorohexanoic acid (PFHxA) | 4.4 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | 2023-10-10 to 2024-07-09 | UCMR5 Analytical Results: ROCK HILL CITY OF (SC4610002) (SC4610002) |
| Perfluoropentanoic acid (PFPeA) | 5.9 ng/L | No federal or state limit; shown for transparency | 2023-10-10 to 2024-07-09 | UCMR5 Analytical Results: ROCK HILL CITY OF (SC4610002) (SC4610002) |
Perfluorohexanoic acid (PFHxA)
Perfluoropentanoic acid (PFPeA)
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorooctanesulfonic acid (PFOS)
Perfluoropentanesulfonic acid (PFPeS)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)
Every value is the published result from the cited public record. A reporting limit is the lowest level the method could reliably quantify; a non-detect is not a guarantee of zero.
UCMR5 Analytical Results
UCMR5 Analytical Results: ROCK HILL CITY OF (SC4610002) (SC4610002)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: ROCK HILL CITY OF (SC4610002) (SC4610002)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Start with the hot-or-cold tap check. Where Rock Hill City of (SC4610002) reported something related, it's shown below.
Lead at Rock Hill City of (SC4610002): 2 µg/L (90th percentile, 2021–2023 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.