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Davie County

Water Supply, Mocksville, North Carolina. NPDES permit NC0084212, in force until Aug 31, 2029. Last 12 months: over a limit once (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 31 days after each period: form M monthly (9 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 11 values over a limit, 3 required values missing, 0 of 12 reports late

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

Period ending	Parameter	Reported	Limit	Over by
July 2026	Flow, in conduit or thru treatment plant, 30-day average	.5519 MGD	≤ .55 MGD	0%

Limits in force (9)

Parameter	Statistic	Limit	Months
Turbidity	daily maximum	report only (NTU)	all year
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	30-day average	≤ 30 mg/L	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Copper, total [as Cu]	30-day average	≤ 7.88 ug/L	all year
Copper, total [as Cu]	daily maximum	≤ 10.47 ug/L	all year
Flow, in conduit or thru treatment plant	30-day average	≤ .55 MGD	all year
Chlorine, total residual	daily maximum	≤ 17 ug/L	all year

How strict are these limits?

Chlorine, total residual, daily maximum 17 ug/L — stricter than 56% of 457 other minor industrial and other permits in North Carolina; 34% have the same limit
Copper, total [as Cu], 30-day average 7.88 ug/L — stricter than 35% of 34 other minor industrial and other permits in North Carolina; 44% have the same limit
Copper, total [as Cu], daily maximum 10.47 ug/L — stricter than 32% of 34 other minor industrial and other permits in North Carolina; 47% have the same limit

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/NC0084212 · MCP: https://passage-data.com/mcp