No health-based violations on EPA record since 2016.
Serves about 13,029 people (4,343 connections) with groundwater from its own wells, and buys water from West Harris County MUD 9, Northwest Harris County MUD 29 and Harris County MUD 170.
From EPA's record for TX1011783. PurityMap is independent of Harris County MUD 168.
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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 April 2024 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 39.8 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| 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 | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| 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 | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| 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 | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| 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 | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| 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 | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| 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 | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-11 to 2024-10-04 | UCMR5 Analytical Results: HARRIS COUNTY MUD 168 (TX1011783) |
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 168's phone number on EPA record is 281-313-2213. Its mailing address is 202 CENTURY SQUARE BLVD, SUGAR LAND, TX 77478-3796.
According to EPA's record, Harris County MUD 168 uses groundwater from its own wells, and buys water from West Harris County MUD 9, Northwest Harris County MUD 29 and Harris County MUD 170.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Harris County MUD 168's latest lead and copper round, which ended in June 2026, was 1.13 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Harris County MUD 168. Its phone number on EPA record is 281-313-2213. Its mailing address on EPA record is 202 CENTURY SQUARE BLVD, SUGAR LAND, TX 77478-3796. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.