No health-based violations on EPA record since 2016.
Serves about 1,269 people (423 connections) with surface water bought from Heatherloch MUD.
From EPA's record for TX1013688. PurityMap is independent of Harris County MUD 551.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
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.
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Follow this water →Harris County MUD 551's phone number on EPA record is 713-850-9000. Its mailing address is 1980 POST OAK BLVD STE 1380, HOUSTON, TX 77056-3970.
According to EPA's record, Harris County MUD 551 uses surface water bought from Heatherloch MUD.
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.
Lead was not detected at the 90th percentile of tap samples in Harris County MUD 551'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 Harris County MUD 551. Its phone number on EPA record is 713-850-9000. Its mailing address on EPA record is 1980 POST OAK BLVD STE 1380, HOUSTON, TX 77056-3970. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.