No health-based violations on EPA record since 2016.
Serves about 26,371 people (6,926 connections) with surface water bought from GSWC and Metropolitan Water Dist. of So. Cal..
From EPA's record for CA1910021. PurityMap is independent of Liberty Utilities.
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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 2023 to November 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 67.7 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 | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| 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 | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| 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 | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| 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 | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| 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 | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| 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 | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| 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 | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-06 to 2023-11-06 | UCMR5 Analytical Results: LIBERTY UTILITIES - COMPTON (CA1910021) |
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 →Liberty Utilities's phone number on EPA record is 562-805-2015. Its mailing address is 9750 WASHBURN RD., DOWNEY, CA 90241.
According to EPA's record, Liberty Utilities uses surface water bought from GSWC and Metropolitan Water Dist. of So. Cal..
No health-based violations on EPA record since 2016. EPA also lists 2 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 Liberty Utilities'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 Liberty Utilities. Its phone number on EPA record is 562-805-2015. Its mailing address on EPA record is 9750 WASHBURN RD., DOWNEY, CA 90241. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.