No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting July 2018.
Serves about 69 people (550 connections) with surface water bought from City of Houston and City of Jersey Village.
From EPA's record for TX1010422. PurityMap is independent of Harris County MUD 25 Brook Hollow West S.
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8 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From July 2018 | Gross alpha particles | 18 pCi/L | 15 pCi/L | Resolved |
| From April 2018 | Gross alpha particles | 20 pCi/L | 15 pCi/L | Resolved |
| From January 2018 | Gross alpha particles | 20 pCi/L | 15 pCi/L | Resolved |
| From October 2017 | Gross alpha particles | 19 pCi/L | 15 pCi/L | Resolved |
| From July 2017 | Gross alpha particles | 18 pCi/L | 15 pCi/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From April 2017 | Gross alpha particles | 18 pCi/L | 15 pCi/L | Resolved |
| From January 2017 | Gross alpha particles | 18 pCi/L | 15 pCi/L | Resolved |
| From October 2016 | Gross alpha particles | 17 pCi/L | 15 pCi/L | Resolved |
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 →Harris County MUD 25 Brook Hollow West S's phone number on EPA record is 713-951-0800. Its mailing address is 10000 MEMORIAL DR STE 260, HOUSTON, TX 77024-3430.
According to EPA's record, Harris County MUD 25 Brook Hollow West S uses surface water bought from City of Houston and City of Jersey Village.
EPA's record shows 8 health-based violations for Harris County MUD 25 Brook Hollow West S 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 July 2018. EPA also lists 7 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Harris County MUD 25 Brook Hollow West S'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 Harris County MUD 25 Brook Hollow West S. Its phone number on EPA record is 713-951-0800. Its mailing address on EPA record is 10000 MEMORIAL DR STE 260, HOUSTON, TX 77024-3430. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.