McLennan County tap water
0 of 13 water systems serving McLennan County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 54 community water systems list this county as served; 11 serve 3,300+ people with full PFAS testing.
- 12 had a health-based violation since 2021-10-26.
Largest systems serving this county
| System | Source | People served (whole system) | PFAS above a 2024 level? | Violations since 2021-10-26 |
|---|---|---|---|---|
| City of Waco | Surface water | 146,241 | No | 0 |
| City of Hewitt | Purchased surface water | 16,978 | No | 0 |
| City of Robinson | Surface water | 11,900 | No | 0 |
| City of Bellmead | Groundwater | 10,664 | No | 0 |
| City of Bruceville Eddy | Purchased surface water | 10,570 | No | 0 |
| City of Woodway | Purchased surface water | 9,383 | No | 0 |
| City of Lacy Lakeview | Purchased surface water | 7,275 | No | 0 |
| City of Mcgregor | Purchased surface water | 6,037 | No | 0 |
| Elm Creek Wsc | Purchased surface water | 4,520 | No | 0 |
| Cross Country Wsc | Groundwater | 3,939 | No | 0 |
| Chalk Bluff Wsc | Groundwater | 3,852 | No | 0 |
Which one is yours? A county usually has several utilities. Your bill or your utility's annual water-quality report names yours. Population is for the whole system, which can cross county lines.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.