E. coli above the legal limit in the period starting November 2025.
Serves about 8,415 people (75 connections) with surface water bought from City of Houston.
From EPA's record for TX1010908. PurityMap is independent of Rice University.
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4 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From April 2026 | Lead and Copper Rule | – | TT | Resolved |
| From March 2026 | Lead and Copper Rule | – | TT | Resolved |
| From November 2025 | E. coli | – | – | Resolved |
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2023 to June 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 22.8 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 | 2023-03-20 to 2023-12-18 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorohexanesulfonic acid (PFHxS) | 3.5 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorobutanesulfonic acid (PFBS) | 3.7 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorohexanoic acid (PFHxA) | 6.4 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorobutanoic acid (PFBA) | 28 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluoropentanoic acid (PFPeA) | 6.9 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| 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 | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| 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 | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| 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 | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| 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 | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| 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 | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-06-05 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-06-05 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-06-05 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-06-05 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-20 to 2024-01-30 | UCMR5 Analytical Results: RICE UNIVERSITY (TX1010908) |
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 →Rice University's phone number on EPA record is 713-348-5050. Its mailing address is PO BOX 1892, HOUSTON, TX 77251-1892.
According to EPA's record, Rice University uses surface water bought from City of Houston.
EPA's record shows 4 health-based violations for Rice University in the 10 years to July 9, 2026. E. coli was above the legal limit in the period starting November 2025. EPA also lists 10 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Rice University's latest lead and copper round, which ended in June 2026, was 2.35 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Rice University. Its phone number on EPA record is 713-348-5050. Its mailing address on EPA record is PO BOX 1892, HOUSTON, TX 77251-1892. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.