No health-based violations on EPA record since 2016.
Serves about 19,125 people (7,111 connections) with groundwater from its own wells, and buys water from Tacoma Water, Lakewood Water District, Parkland Light & Water Company and 1 more.
From EPA's record for WA5385050. PurityMap is independent of Summit Water & Supply Co.
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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 May 2023 to November 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluoropentanoic acid (PFPeA) | 3.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| 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 | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| 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 | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| 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 | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| 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 | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| 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 | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| 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 | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| 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 | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-30 to 2023-11-27 | UCMR5 Analytical Results: SUMMIT WATER & SUPPLY CO (WA5385050) |
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 →According to EPA's record, Summit Water & Supply Co uses groundwater from its own wells, and buys water from Tacoma Water, Lakewood Water District, Parkland Light & Water Company and 1 more.
No health-based violations on EPA record since 2016. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Summit Water & Supply Co's latest lead and copper round, which ended in December 2025, was 2.3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Summit Water & Supply Co. Its mailing address on EPA record is 9701 50th AVE E, Tacoma, WA 98446. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.