Reading Area Water Auth Berks Cnty — NPDES permit PA0051781: limits, due date and EPA's record

Water Supply, Reading, Pennsylvania. NPDES permit PA0051781, in force until Sep 30, 2030. Last 12 months: over a limit once (last June 2026), 88 required values missing. Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
June 2026	Chlorine, total residual, instantaneous maximum	.68 mg/L	≤ .439 mg/L	55%

Limits in force (46)

Parameter	Statistic	Limit	Months	Outfall
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 30 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 60 mg/L	all year	001
Solids, total suspended	monthly average	≤ 750 lb/d	all year	001
Solids, total suspended	daily maximum	≤ 1500 lb/d	all year	001
Iron, total [as Fe]	monthly average	≤ 2 mg/L	all year	001
Iron, total [as Fe]	daily maximum	≤ 4 mg/L	all year	001
Iron, total [as Fe]	monthly average	≤ 50 lb/d	all year	001
Iron, total [as Fe]	daily maximum	≤ 100 lb/d	all year	001
Manganese, total [as Mn]	monthly average	≤ 1 mg/L	all year	001
Manganese, total [as Mn]	daily maximum	≤ 2 mg/L	all year	001
Manganese, total [as Mn]	monthly average	≤ 25 lb/d	all year	001
Manganese, total [as Mn]	daily maximum	≤ 50 lb/d	all year	001
Aluminum, total [as Al]	monthly average	≤ .82 mg/L	all year	001
Aluminum, total [as Al]	daily maximum	≤ 1.6 mg/L	all year	001
Aluminum, total [as Al]	monthly average	≤ 20 lb/d	all year	001
Aluminum, total [as Al]	daily maximum	≤ 40 lb/d	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Chlorine, total residual	monthly average	≤ .134 mg/L	all year	001
Chlorine, total residual	instantaneous maximum	≤ .439 mg/L	all year	001
Solids, total dissolved	quarterly average	≤ 1000 mg/L	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 30 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 60 mg/L	all year	002
Solids, total suspended	monthly average	≤ 65 lb/d	all year	002
Solids, total suspended	daily maximum	≤ 130 lb/d	all year	002
Iron, total [as Fe]	monthly average	report only (mg/L)	all year	002
Iron, total [as Fe]	daily maximum	report only (mg/L)	all year	002
Iron, total [as Fe]	monthly average	report only (lb/d)	all year	002
Iron, total [as Fe]	daily maximum	report only (lb/d)	all year	002
Manganese, total [as Mn]	monthly average	report only (mg/L)	all year	002
Manganese, total [as Mn]	daily maximum	report only (mg/L)	all year	002
Manganese, total [as Mn]	monthly average	report only (lb/d)	all year	002
Manganese, total [as Mn]	daily maximum	report only (lb/d)	all year	002
Aluminum, total [as Al]	monthly average	report only (mg/L)	all year	002
Aluminum, total [as Al]	daily maximum	report only (mg/L)	all year	002
Aluminum, total [as Al]	monthly average	report only (lb/d)	all year	002
Aluminum, total [as Al]	daily maximum	report only (lb/d)	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Chlorine, total residual	monthly average	≤ .134 mg/L	all year	002
Chlorine, total residual	instantaneous maximum	≤ .439 mg/L	all year	002
Solids, total dissolved	quarterly average	≤ 1000 mg/L	all year	002

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/PA0051781 · MCP: https://passage-data.com/mcp