City of Ennis serves 24,891 people from surface water. 31 results are on record. No measured result is above a legal limit.
No measured result is above a legal limit.
4,101service lines inventoried
From the utility's inventory reported to EPA (2026Q2). Look up your address with the utility.
0health-based violations in the last 10 years
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit.
No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.
A federal limit (an MCL or action level) is an enforceable legal cap; a health goal is often stricter. Meeting the limit is a compliance fact, not a health clearance, and PurityMap publishes no overall compliance verdict.
A tap test can confirm levels at your home before you choose treatment.
PFBS 7.2 ng/L, below the 2000 ng/L EPA health advisory (+3 more PFAS detected)
Understand water treatment technologies →
Understand:PFAS in Ennis
★ Best available: Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M), the best fit here; nothing in this group is certified yet.
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
CITY OF ENNIS (PWS ID TX0700001) is a public water system serving 24,891 people in Ennis, Texas.
CITY OF ENNIS is on record as drawing from surface water. The source shapes which contaminants matter most for this system.
PurityMap's record for CITY OF ENNIS holds 31 findings: 2 detected within the reference, 2 detected with no limit and 27 not detected, from 31 evidence records. Every finding links to its source; a substance that was never monitored is shown as pending, not as a pass.
PurityMap does not issue a safety verdict. It publishes CITY OF ENNIS's measured results against each contaminant's benchmark so you can read them in context. Safety depends on the specific finding, your plumbing, and how the water reaches your tap.
The latest published record for CITY OF ENNIS is dated 2026-10-15. Utilities report on regulatory cycles, so results reflect the monitoring period rather than a live reading.
No. It is assessed at the water-system level from CITY OF ENNIS's own monitoring. It does not cover the service line to your building or the plumbing inside it, which can add lead and other metals after the water leaves the system. A tap test is the way to know what reaches your glass.
Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluorobutanoic acid (PFBA) and Perfluoropentanoic acid (PFPeA) were detected in this record. Each finding shows its measured value, its reference and its source on this page.
Start with what the record shows: the PFAS findings above list each measured value against its reference. This record cannot show your home's plumbing, so a tap test tells you what reaches your glass. If you decide to treat your water, look for a filter whose certification covers the specific PFAS compounds in your record; the section "Certified for a concern found here" lists only products with a current certification record for these concerns.
Follow City of Ennis
One email when a new sampling round is published, a result moves above or below its reference, or the system's score changes.
Follow this water →As listed for this system in EPA's records. Your water bill names your supplier.
| Substance | Result | Reference | Sampled | Status | Evidence |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | 2023-03-15 to 2023-12-11 | Not detected | — |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluorobutanoic acid (PFBA) | 12 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Detected, no limit | View evidence |
| Perfluorobutanesulfonic acid (PFBS) | 7.2 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit) | 2023-03-15 to 2023-12-11 | Below limit | View evidence |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluorohexanoic acid (PFHxA) | 13.2 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | 2023-03-15 to 2023-12-11 | Below limit | View evidence |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | 2023-03-15 to 2023-12-11 | Not detected | View evidence |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | 2023-03-15 to 2023-12-11 | Not detected | View evidence |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | 2023-03-15 to 2023-12-11 | Not detected | View evidence |
| Perfluoropentanoic acid (PFPeA) | 17.3 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Detected, no limit | View evidence |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | 2023-03-15 to 2023-12-11 | Not detected | — |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit) | 2023-03-15 to 2023-12-11 | Not detected | — |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | 2023–2025 monitoring period | Not detected | View evidence |
UCMR5 Analytical Results
UCMR5 Analytical Results: CITY OF ENNIS (TX0700001)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: CITY OF ENNIS (TX0700001)
US EPA SDWIS
| Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M) |
| Not certified for Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluorobutanoic acid (PFBA) and Perfluoropentanoic acid (PFPeA) |
| $$ |
| Check price at Aquasana |
| Also good | Aquasana Clean Water Machine Countertop Filter (AQ-CWM2) | Not certified for Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluorobutanoic acid (PFBA) and Perfluoropentanoic acid (PFPeA) | $$ | Check price at Aquasana |
★ Best available: iSpring WGB32B-PFKS PFAS & Heavy Metals Whole House Filter, the best fit here; nothing in this group is certified yet.
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
| ★ Best available | iSpring WGB32B-PFKS PFAS & Heavy Metals Whole House FilterUse code REFISPRING at checkout: 10% off your first iSpring order. | Brand lab-tested for PFAS, not independently certified for Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluorobutanoic acid (PFBA) and Perfluoropentanoic acid (PFPeA) | $$$ | Check price at iSpring |
| Also good | HealthShield™ | Not certified for Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), Perfluorobutanoic acid (PFBA) and Perfluoropentanoic acid (PFPeA) | $$$$ | Check price at Aquasana |
PurityMap earns a commission from these links. "Best choice" and "Budget pick" go to certified products first; commission never decides them. Affiliate disclosure.