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Dare County

Water Supply, Rodanthe, North Carolina. NPDES permit NC0083909, in force until Jan 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: form M monthly (22 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 13 required values missing, 0 of 12 reports late

Limits in force (22)

ParameterStatisticLimitMonths
Turbiditydaily maximumreport only (NTU)all year
Conductivitydaily maximumreport only (umho/cm)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
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
pHdaily maximumreport only (SU)all year
Salinitydaily maximumreport only (ppk)all year
Salinitydaily maximumreport only (ppk)all year
Salinitydaily maximumreport only (ppk)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Arsenic, total [as As]daily maximumreport only (ug/L)all year
Copper, total [as Cu]daily maximumreport only (ug/L)all year
Nickel, total [as Ni]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]daily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plant30-day average≤ .221 MGDall 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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NC0083909 · MCP: https://passage-data.com/mcp