1 open health-based violation on EPA record.
Serves about 3,950 people (1,540 connections) with groundwater from its own wells.
From EPA's record for AZ0408081. PurityMap is independent of Golden Valley Improvement District.
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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 March 2025 | Groundwater Rule | – | – | Unaddressed |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2023 to May 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 40 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 | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| 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 | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| 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 | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| 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 | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| 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 | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| 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 | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| 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 | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-10 to 2025-05-01 | UCMR5 Analytical Results: GOLDEN VALLEY IMPROVEMENT DISTRICT (AZ0408081) |
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 →Golden Valley Improvement District's phone number on EPA record is 928-757-0910. Its mailing address is ATTN: JESSI ROYBAL, PO BOX 7000, KINGMAN, AZ 86402.
According to EPA's record, Golden Valley Improvement District uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Golden Valley Improvement District in the 10 years to July 9, 2026. EPA's record lists 1 open health-based violation. EPA also lists 7 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 Golden Valley Improvement District's latest lead and copper round, which ended in December 2023. The federal action level is 15 µg/L.
PurityMap has no verified website for Golden Valley Improvement District. Its phone number on EPA record is 928-757-0910. Its mailing address on EPA record is ATTN: JESSI ROYBAL, PO BOX 7000, KINGMAN, AZ 86402. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.