Total trihalomethanes (TTHM) above the legal limit in the period starting January 2026.
Serves about 2,985 people (995 connections) with surface water bought from GBRA Western Canyon Water Supply.
From EPA's record for TX0460246. PurityMap is independent of SJWTX Glenwood Subdivision.
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3 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2026 | Total trihalomethanes (TTHM) | 0.112 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2025 | Total trihalomethanes (TTHM) | 0.101 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.083 mg/L | 0.080 mg/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 →SJWTX Glenwood Subdivision's phone number on EPA record is 830-312-4600. Its mailing address is PO BOX 1742, CANYON LAKE, TX 78133-0005.
According to EPA's record, SJWTX Glenwood Subdivision uses surface water bought from GBRA Western Canyon Water Supply.
EPA's record shows 3 health-based violations for SJWTX Glenwood Subdivision in the 10 years to July 9, 2026. Total trihalomethanes (TTHM) were above the legal limit in the period starting January 2026. EPA also lists 6 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in SJWTX Glenwood Subdivision's latest lead and copper round, which ended in December 2023, was 2.6 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for SJWTX Glenwood Subdivision. Its phone number on EPA record is 830-312-4600. Its mailing address on EPA record is PO BOX 1742, CANYON LAKE, TX 78133-0005. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.