Williamson, TX
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.
Environmental data for Williamson in Texas · Population: 643,889
Williamson, TX is tracked across three EPA datasets covering 25 Toxics Release Inventory (TRI) facilities, 30 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 49/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 395.4K lbs of reported toxic releases under EPCRA Section 313, while 11 water systems carry an active health-based violation in the SDWIS record. No EPA Air Quality System monitors currently report data for this county.
All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.
Water Systems (30)
| System | Population | Violations |
|---|---|---|
| CITY OF GEORGETOWN | 191,639 | 0 |
| CITY OF ROUND ROCK | 130,662 | 0 |
| CITY OF CEDAR PARK | 86,939 | 0 |
| MANVILLE WSC | 39,648 | 5 |
| JONAH WATER SUD | 29,861 | 8 |
| CITY OF HUTTO | 29,580 | 2 |
| CITY OF TAYLOR | 20,622 | 1 |
| BRUSHY CREEK MUD | 18,314 | 0 |
| NORTH AUSTIN MUD 1 | 11,133 | 0 |
| JARRELL SCHWERTNER WSC | 9,681 | 0 |
| CITY OF LIBERTY HILL | 8,777 | 8 |
| WILLIAMSON TRAVIS COUNTY MUD 1 | 5,793 | 0 |
| FERN BLUFF MUD | 5,682 | 0 |
| CITY OF JARRELL | 3,450 | 0 |
| HEADWATERS AT BARTON CREEK | 2,315 | 0 |
| CITY OF GRANGER | 1,914 | 0 |
| BLESSING MOBILE HOME PARK | 1,518 | 1 |
| TRAVIS COUNTY MUD 18 | 1,491 | 0 |
| DURHAM PARK WSC | 1,251 | 0 |
| CITY OF FLORENCE | 1,136 | 3 |
| CITY OF THRALL | 975 | 5 |
| WALSH RANCH MUD | 714 | 0 |
| BARTON CREEK WSC | 633 | 1 |
| ROUND ROCK RANCH PUD UTILITY COMPANY | 285 | 0 |
| NAMELESS HOLLOW CONDOMINIUMS | 210 | 5 |
| PATRIOT RV PARK BURNET | 90 | 1 |
| LIBERTY GREENLINE | 46 | 0 |
| PLAZA PARK ESTATES MHP | 20 | 0 |
| BRUSHY CREEK REGIONAL UTILITY AUTHORITY | 0 | 0 |
| LONE STAR RWA | 0 | 0 |
TRI Facilities (25)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Contemporary Products of Texas Inc | 377.7K lbs |
| 2 | Durcon Inc | 10.3K lbs |
| 3 | Valero Taylor Terminal | 4.3K lbs |
| 4 | Exfluor Research | 2.2K lbs |
| 5 | Seward Plant | 711 lbs |
| 6 | Nov M/d Totco Cedar Park | 128 lbs |
| 7 | Teco-Westinghouse Motor Co | 72 lbs |
| 8 | Airborn Inc. | 29 lbs |
| 9 | Gemini - Taylor | 19 lbs |
| 10 | Cargill Meat Solutions Corp | 13 lbs |
| 11 | Tec/solomon Corp Alliance | 11 lbs |
| 12 | Custom Crete - Leander | 4 lbs |
| 13 | Asphalt Inc Ronald Reagan Plant | 4 lbs |
| 14 | Florence Hmp | 3 lbs |
| 15 | Icu Medical Inc | 2 lbs |
| 16 | Txi-Georgetown Ready Mix | 0 lbs |
| 17 | Lone Star Concrete Chandler Plant | 0 lbs |
| 18 | Txi-Leander Ready Mix | 0 lbs |
| 19 | Centex Materials - Georgetown Rmx | 0 lbs |
| 20 | Fluoromed Products L.P. | 0 lbs |
| 21 | Ronald Reagan Cbp | 0 lbs |
| 22 | Jarrell Plant | 0 lbs |
| 23 | Mm Taylor Ready Mix | 0 lbs |
| 24 | Cerilliant Corp | 0 lbs |
| 25 | Benuvia | 0 lbs |
Cities in Williamson (10)
Frequently Asked Questions
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.