No health-based violations on EPA record since 2016.
Serves about 12,943 people (5,157 connections) with surface water from its own intake.
From EPA's record for VA2065480. PurityMap is independent of Lake Monticello.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2024 to November 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanesulfonic acid (PFBS) | 3.7 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 | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorohexanoic acid (PFHxA) | 5.5 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluoropentanoic acid (PFPeA) | 6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| 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 | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| 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 | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| 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 | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| 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 | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| 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 | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| 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 | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-22 to 2024-11-18 | UCMR5 Analytical Results: LAKE MONTICELLO (VA2065480) |
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 →Lake Monticello's phone number on EPA record is 804-749-8868. Its mailing address is 2414 Granite Ridge Rd, ROCKVILLE, VA 23146.
According to EPA's record, Lake Monticello uses surface water from its own intake.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Lake Monticello's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Lake Monticello. Its phone number on EPA record is 804-749-8868. Its mailing address on EPA record is 2414 Granite Ridge Rd, ROCKVILLE, VA 23146. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.