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St. Johns County School Board - Orange

Water Supply, Hastings, Florida. NPDES permit FL0429333 expired Aug 26, 2026; its limits still apply. Last 12 months: over a limit 13 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 90 days after each period: form 1 monthly (21 values), form Q quarterly (5 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], maximum.3 mg/L≤ 0 mg/L—
November 2025Specific conductance, maximum5500 umho/cm≤ 4950 umho/cm11%
December 2025Specific conductance, maximum5600≤ 4950 umho/cm13%
January 2026Nitrogen, ammonia total [as N], maximum.17≤ 0 mg/L—
January 2026pH, maximum8.51≤ 8.5 SU—
February 2026Specific conductance, maximum5000≤ 4950 umho/cm1%
March 2026Nitrogen, ammonia total [as N], monthly average.26≤ 0 mg/L—
March 2026pH, maximum8.71≤ 8.5 SU—
April 2026Nitrogen, ammonia total [as N], monthly average.15≤ 0 mg/L—
May 2026Nitrogen, ammonia total [as N], monthly average.15≤ 0 mg/L—
June 2026Nitrogen, ammonia total [as N], monthly average.13≤ 0 mg/L—
July 2026Nitrogen, ammonia total [as N], monthly average.1≤ 0 mg/L—
August 2026Nitrogen, ammonia total [as N], monthly average.17≤ 0 mg/L—

Limits in force (26)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademaximumreport only (deg C)all year
Specific conductancemaximum≤ 4950 umho/cmall year
Specific conductancemaximumreport only (umho/cm)all year
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmaximumreport only (mg/L)all year
Nitrogen, total [as N]maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 0 mg/Lall year
Nitrogen, ammonia total [as N]maximum≤ 0 mg/Lall year
Phosphorus, total [as P]maximumreport only (mg/L)all year
Radium 226 + radium 228, totalmaximum≤ 12.5 pCi/Lall year
Flow, in conduit or thru treatment plantdaily maximum≤ .032 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ .0072 MGDall year
Hydrogen sulfide, unionizedmaximumreport only (mg/L)all year
Alpha, gross particle activitymaximum≤ 20 pCi/Lall year
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 20 %all year
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 20 %all year
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimum≥ 20 %all year
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 20 %all year
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 20 %all year
LC50 Static Renewal 96Hr Acute Cyprinella leedsiminimum≥ 20 %all year

How strict are these limits?

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

Same industry: the 26 Water Supply permits in Florida.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/FL0429333 · MCP: https://passage-data.com/mcp