1 open health-based violation on EPA record.
Serves about 7,392 people (3,214 connections) with groundwater from its own wells.
From EPA's record for AZ0413012. PurityMap is independent of Big Park Water Company.
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7 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From November 2025 | E. coli | – | – | Unaddressed |
| From October 2024 | Arsenic | 0.011 mg/L | 0.010 mg/L | Resolved |
| From July 2024 | Arsenic | 0.012 mg/L | 0.010 mg/L | Resolved |
| From April 2024 | Arsenic | 0.013 mg/L | 0.010 mg/L | Resolved |
| From April 2024 | Arsenic | 0.015 mg/L | 0.010 mg/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2024 | Arsenic | 0.011 mg/L | 0.010 mg/L | Resolved |
| From July 2023 | E. coli | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2023 to August 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 21 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Lithium | 28 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 | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorooctanesulfonic acid (PFOS) | 4.1 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorohexanesulfonic acid (PFHxS) | 3.3 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorobutanesulfonic acid (PFBS) | 28 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 | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorohexanoic acid (PFHxA) | 4.6 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluoroheptanoic acid (PFHpA) | 4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluoropentanoic acid (PFPeA) | 4.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| 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 | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| 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 | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| 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 | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| 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 | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| 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 | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-08-14 | UCMR5 Analytical Results: BIG PARK WATER COMPANY (AZ0413012) |
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.
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Follow this water →Big Park Water Company's phone number on EPA record is 928-284-2298. Its mailing address is STE 4, 45 CASTLE ROCK RD, SEDONA, AZ 86351.
According to EPA's record, Big Park Water Company uses groundwater from its own wells.
EPA's record shows 7 health-based violations for Big Park Water Company in the 10 years to July 9, 2026. EPA's record lists 1 open health-based violation. EPA also lists 393 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 Big Park Water Company's latest lead and copper round, which ended in December 2024. The federal action level is 15 µg/L.
PurityMap has no verified website for Big Park Water Company. Its phone number on EPA record is 928-284-2298. Its mailing address on EPA record is STE 4, 45 CASTLE ROCK RD, SEDONA, AZ 86351. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.