Water system · PWSID TX0310002
HARLINGEN WATER WORKS SYSTEM
PWSID
TX0310002
State
Texas
City
HARLINGEN
Population served
85,900
Primary source
Surface water
Score history
No change since tracking began Jun 18, 2026.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Jun 2024). Levels in parts per trillion (ppt).
Lithium
37,200 ppt
limit —
PFBA
6.8 ppt
limit —
PFHxA
3 ppt
limit —
PFPeA
3 ppt
limit —
Violations & enforcement
1
Violations on record
0
Unaddressed
0
Health-based
4
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Jan 2021. Official EPA record →
Recent enforcement actions
- State action · SIF Jan 2021
- State action · SOX Jan 2021
- State action · SIA Jan 2021
- State action · SIE Jan 2021
Area water-quality monitoring
Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.
Fluoride
1 station · latest Oct 2025
Nitrate
1 station · latest Sep 2023
Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.
This profile is built from EPA public records for system TX0310002 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.