No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting October 2024.
Serves about 2,993 people (1,069 connections) with surface water bought from Clawa.
From EPA's record for CA3610023. PurityMap is independent of Green Valley MWC.
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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 October 2024 | Uranium | 23.25 pCi/L | 30 µg/L | Archived |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
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 →Green Valley MWC's phone number on EPA record is 909-867-2912. Its mailing address is P.O. BOX 8300, GREEN VALLEY LAKE, CA 92341.
According to EPA's record, Green Valley MWC uses surface water bought from Clawa.
EPA's record shows 1 health-based violation for Green Valley MWC in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting October 2024. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Green Valley MWC's latest lead and copper round, which ended in December 2020, was 24.9 µg/L, above the federal action level of 15 µg/L.
PurityMap has no verified website for Green Valley MWC. Its phone number on EPA record is 909-867-2912. Its mailing address on EPA record is P.O. BOX 8300, GREEN VALLEY LAKE, CA 92341. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.