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East Rio Hondo Water Supply Corporation

Water Supply, Harlingen, Texas. NPDES permit TX0127299 expired Apr 22, 2026; its limits still apply. Last 12 months: over a limit once (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 20 days after each period: form A monthly (8 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
December 2025	Solids, total dissolved, daily maximum	13500 mg/L	≤ 12720 mg/L	6%

Limits in force (8)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Chloride [as Cl]	daily maximum	report only (mg/L)	all year
Sulfate, total [as SO4]	daily maximum	report only (mg/L)	all year
Flow, in conduit or thru treatment plant	daily average	≤ 2 MGD	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Solids, total dissolved	daily average	report only (mg/L)	all year
Solids, total dissolved	daily maximum	≤ 12720 mg/L	all year

How strict are these limits?

Solids, total dissolved, daily maximum 12720 mg/L — stricter than 11% of 35 other minor industrial and other permits in Texas; 11% have the same limit

Cited limits by parameter: Texas's rules and the federal ones.

Same industry: the 115 Water Supply permits in Texas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0127299 · MCP: https://passage-data.com/mcp