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Dare County

Water Supply, Manteo, North Carolina. NPDES permit NC0035670 expired Sep 30, 2023; its limits still apply. 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 (19 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 9 required values missing, 0 of 12 reports late

Limits in force (19)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
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
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
Salinity [PSU]daily maximumreport only (PSU)all year
Salinity [PSU]daily maximumreport only (PSU)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)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/NC0035670 · MCP: https://passage-data.com/mcp