No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting January 2020.
Serves about 11,587 people (4,562 connections) with groundwater from its own wells.
From EPA's record for NC0465199. PurityMap is independent of The Cape Master System.
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6 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2020 | Total trihalomethanes (TTHM) | 0.093 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2019 | Total trihalomethanes (TTHM) | 0.086 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2019 | Total trihalomethanes (TTHM) | 0.084 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2019 | Total trihalomethanes (TTHM) | 0.087 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2017 | Total trihalomethanes (TTHM) | 0.09 mg/L | 0.080 mg/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Apr–Jun 2017 | Total trihalomethanes (TTHM) | 0.085 mg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2025 to July 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 17.5 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | 8.4 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorobutanesulfonic acid (PFBS) | 4.6 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| 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 | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| 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 | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| 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 | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| 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 | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| 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 | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-07 to 2025-07-23 | UCMR5 Analytical Results: THE CAPE MASTER SYSTEM (NC0465199) |
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 →The Cape Master System's phone number on EPA record is 919-653-6999. Its mailing address is 202 MACKENAN COURT, CARY, NC 27511.
According to EPA's record, The Cape Master System uses groundwater from its own wells.
EPA's record shows 6 health-based violations for The Cape Master System in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting January 2020. EPA also lists 3 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in The Cape Master System's latest lead and copper round, which ended in June 2024, was 3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for The Cape Master System. Its phone number on EPA record is 919-653-6999. Its mailing address on EPA record is 202 MACKENAN COURT, CARY, NC 27511. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.