Passage Data · Check a report · Use it from your AI

Stoner Quality Water, Inc.

Business Services, Corriganville, Maryland. NPDES permit MD0020818, in force until Oct 31, 2027. Last 12 months: no values over a limit, 3 of 4 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form A quarterly
Renewal application due: May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file: July 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 4 of 4 reports late

Limits in force (10)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 8.5 SU	all year
Solids, total suspended	maximum monthly average	≤ 20 mg/L	all year
Solids, total suspended	daily maximum	≤ 30 mg/L	all year
Solids, total suspended	annual maximum	≤ 122 lb/yr	all year
Solids, total suspended	monthly average	report only (lb/qtr)	all year
Solids, total suspended	daily maximum	report only (lb/d)	all year
Chloride [as Cl]	daily maximum	report only (mg/L)	all year
Flow, in conduit or thru treatment plant	monthly average	report only (gal/d)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (gal/d)	all year

How strict are these limits?

Solids, total suspended, maximum monthly average 20 mg/L — stricter than 72% of 99 other minor industrial and other permits in Maryland; 18% have the same limit
Solids, total suspended, daily maximum 30 mg/L — stricter than 63% of 52 other minor industrial and other permits in Maryland; 35% have the same limit
pH, maximum 8.5 SU — stricter than 12% of 132 other minor industrial and other permits in Maryland; 81% have the same limit

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

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0020818 · MCP: https://passage-data.com/mcp