EPA SDWIS Compliance Records
Drinking Water Compliance Report for Dallas, TX
5 public water systems serve Dallas — real federal compliance history, not a marketing claim.
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Water systems serving this city
6
Total compliance records on file
1
Health-based violations
What this means for your tap water: a "health-based" violation means a system exceeded an actual contaminant safety threshold at some point — different from a paperwork or reporting violation, which is far more common and far less concerning. Dallas's systems average 0.6 health-based violations each, ranking about middle-of-the-pack (#11 of 20 we track). Which specific system serves your address determines whether that history applies to you — check the list below rather than assuming.
Systems Serving Dallas
DALLAS WATER UTILITY
1,356,479 people served1 violation on record, none health-based.
- July 2008 — Other— resolved
CITY OF UNIVERSITY PARK
25,278 people served1 violation on record, none health-based.
- July 2025 — Other— resolved
DALLAS COUNTY WCID 7
9,000 people servedNo violations on record.
TOWN OF HIGHLAND PARK
8,959 people served1 violation on record, none health-based.
- July 2013 — Other— resolved
KAUFMAN COUNTY FWSD 4A
7,317 people served3 violations on record, including health-based violations.
- May 2025 — Other— resolved
- October 2024 — TT(health-based)— resolved
- October 2024 — RPT— resolved
Source: EPA Safe Drinking Water Information System (SDWIS), via Envirofacts. Water-system-level records, not address-specific — homes on private wells or served by a different system than listed here aren't reflected. A resolved violation means the system returned to compliance; it doesn't mean water quality is currently at risk.
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