Is Little Elm, Texas tap water safe?

8 water systems report serving Little Elm. Your water depends on which one serves your address. Check your bill if unsure. This list is matched from the ZIP codes in this place, so it may include nearby systems.

A

Mustang SUD

Serves 127,911 people · Surface water · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

Town of Little Elm

Serves 43,348 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
B

City of Hackberry

Serves 9,593 people · Surface water · Full report →
No health-based violations in the last 5 years; 6 monitoring/reporting violations; 4 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

Frisco West WCID

Serves 5,805 people · Surface water · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
B

Hilltown Addition

Serves 2,439 people · Groundwater · Full report →
No health-based violations in the last 5 years; 15 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
C

Saratoga Estates

Serves 483 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 6 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
C

Knob Hill Water System Denton

Serves 234 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 10 monitoring/reporting violations; 4 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
B

Spanish Oaks Addition

Serves 111 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).