EPA data as of Oct 2026 · page updated 2026-10-30

Sardis Lone ELM WSC

Sardis Lone ELM WSC (EPA ID TX0700034) in Midlothian, TX supplies surface water (rivers, lakes) to about 20,736 people: no health-based violations since 2016, latest lead result 1.4 ppb, PFAS 4 detected.

Service area

EPA service-area boundary (state-supplied or EPA-modeled)
Water utility service area PFOA/PFOS ≥ 4 ppt Lead > 15 ppb 5+ violations Superfund site (active) proposed cleaned up Circles: other water systems flagged nearby; size = people served. Tap any symbol for details.

System facts

People served20,736
Connections6,768
Sourcesurface water (rivers, lakes)
WholesalerNo

Health-based violations

No health-based violations reported since 2016.

Lead

Jan 20241.4 ppb
Jan 20214.4 ppb
Jul 20203.2 ppb
Jan 20202.4 ppb
Jan 20173.2 ppb
Jan 20148.4 ppb
Jan 20112.3 ppb
Jan 20083.2 ppb

90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.

PFAS

CompoundHighest resultSamples with detectionEPA limit
PFBA7.8 ppt3 of 28—
PFPeA5.8 ppt6 of 28—
PFHxA5.6 ppt6 of 28—
PFBS3.7 ppt3 of 28—
PFHpAnot detected0 of 28—
HFPO-DA (GenX)not detected0 of 28—
PFDAnot detected0 of 28—
PFOAnot detected0 of 284 ppt MCL
PFOSnot detected0 of 284 ppt MCL
PFNAnot detected0 of 28—
PFHxSnot detected0 of 28—

EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.

ZIP codes served

ZIP codes whose center lies in this system’s service area or that the state lists for it.

What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.

Questions

Has Sardis Lone ELM WSC had drinking water violations?

No health-based violations reported since 2016.

What is the lead level in Sardis Lone ELM WSC water?

The latest 90th-percentile lead result (Jan 2024) was 1.4 ppb. EPA’s action level is 15 ppb (10 ppb from 2027).

Does Sardis Lone ELM WSC have PFAS in its water?

PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).