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Perquimans County

Water Supply, Winfall, North Carolina. NPDES permit NC0051373, in force until Jun 30, 2029. Last 12 months: over a limit 20 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (17 values)
Last report on file
July 2026
Oct 2024 – Sep 2025
24 values over a limit, 0 required values missing, 3 of 12 reports late

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

All 20 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chloride [as Cl], 30-day average3780 mg/L≤ 230 mg/L1543%
October 2025Chloride [as Cl], daily maximum3780 mg/L≤ 230 mg/L1543%
November 2025Chloride [as Cl], 30-day average6000 mg/L≤ 230 mg/L2509%
November 2025Chloride [as Cl], daily maximum6000 mg/L≤ 230 mg/L2509%
December 2025Chloride [as Cl], 30-day average7130 mg/L≤ 230 mg/L3000%
December 2025Chloride [as Cl], daily maximum7130 mg/L≤ 230 mg/L3000%
January 2026Chloride [as Cl], 30-day average11700 mg/L≤ 230 mg/L4987%
January 2026Chloride [as Cl], daily maximum11700 mg/L≤ 230 mg/L4987%
February 2026Chloride [as Cl], 30-day average15900 mg/L≤ 230 mg/L6813%
February 2026Chloride [as Cl], daily maximum15900 mg/L≤ 230 mg/L6813%
March 2026Chloride [as Cl], 30-day average4600 mg/L≤ 230 mg/L1900%
March 2026Chloride [as Cl], daily maximum4600 mg/L≤ 230 mg/L1900%
April 2026Chloride [as Cl], 30-day average3700 mg/L≤ 230 mg/L1509%
April 2026Chloride [as Cl], daily maximum3700 mg/L≤ 230 mg/L1509%
May 2026Chloride [as Cl], 30-day average4660 mg/L≤ 230 mg/L1926%
May 2026Chloride [as Cl], daily maximum4660 mg/L≤ 230 mg/L1926%
June 2026Chloride [as Cl], 30-day average2470 mg/L≤ 230 mg/L974%
June 2026Chloride [as Cl], daily maximum2470 mg/L≤ 230 mg/L974%
July 2026Chloride [as Cl], 30-day average2790 mg/L≤ 230 mg/L1113%
July 2026Chloride [as Cl], daily maximum2790 mg/L≤ 230 mg/L1113%

Limits in force (17)

ParameterStatisticLimitMonths
Turbiditydaily maximumreport only (NTU)all year
Conductivitydaily maximumreport only (umho/cm)all year
Conductivitydaily maximumreport only (umho/cm)all year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
pHdaily minimum≥ 6.8 SUall year
pHdaily maximum≤ 8.5 SUall year
pHdaily maximumreport only (SU)all year
Salinitydaily maximumreport only (ppk)all year
Salinitydaily maximumreport only (ppk)all year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Copper, total [as Cu]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]daily maximumreport only (ug/L)all year
Chlorine, total residualdaily maximum≤ 13 ug/Lall year
Solids, total dissolveddaily maximumreport only (mg/L)all year

How strict are these limits?

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

Same industry: the 130 Water Supply permits in North Carolina.

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NC0051373 · MCP: https://passage-data.com/mcp