No open health-based violations on EPA record in the last 10 years.
Serves about 18,273 people (7,532 connections) with surface water bought from City of Rock Hill.
From EPA's record for SC4620003. PurityMap is independent of York County West WD (SC4620003).
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2023 to January 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorohexanoic acid (PFHxA) | 4.2 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluoropentanoic acid (PFPeA) | 4.9 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2024-01-10 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2024-01-10 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2024-01-10 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2024-01-10 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-23 to 2023-10-11 | UCMR5 Analytical Results: YORK COUNTY WEST WD (SC4620003) (SC4620003) |
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
Turnaround: 5 minutes
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
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
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.
Get PurityMap updates about this water system.
Follow this water →York County West WD (SC4620003)'s phone number on EPA record is 803-818-6507. Its mailing address is YORK COUNTY PUBLIC WORKS, PO BOX 120, YORK, SC 29745.
According to EPA's record, York County West WD (SC4620003) uses surface water bought from City of Rock Hill.
EPA's record shows 1 health-based violation for York County West WD (SC4620003) in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 4 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in York County West WD (SC4620003)'s latest lead and copper round, which ended in December 2020. The federal action level is 15 µg/L.
PurityMap has no verified website for York County West WD (SC4620003). Its phone number on EPA record is 803-818-6507. Its mailing address on EPA record is YORK COUNTY PUBLIC WORKS, PO BOX 120, YORK, SC 29745. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.