City Of Buckeye — NPDES permit AZ0025313: limits, due date and EPA's record

Sewage treatment plant, major discharger, Buckeye, Arizona. NPDES permit AZ0025313, in force until Oct 9, 2030. Last 12 months: over a limit once (last March 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
March 2026	E. coli, colony forming units [CFU], daily maximum	2420 CFU/100mL	≤ 575 CFU/100mL	321%

Limits in force (100)

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	002
BOD, 5-day, 20 deg. C	weekly average	≤ 45 mg/L	all year	002
BOD, 5-day, 20 deg. C	monthly average	≤ 510 kg/d	all year	002
BOD, 5-day, 20 deg. C	weekly average	≤ 770 kg/d	all year	002
pH	minimum	≥ 6.5 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 30 mg/L	all year	002
Solids, total suspended	weekly average	≤ 45 mg/L	all year	002
Solids, total suspended	monthly average	≤ 510 kg/d	all year	002
Solids, total suspended	weekly average	≤ 771 kg/d	all year	002
Oil & Grease	monthly average	≤ 10 ug/L	all year	002
Oil & Grease	daily maximum	≤ 15 ug/L	all year	002
Oil & Grease	monthly average	≤ 170 g/d	all year	002
Oil & Grease	daily maximum	≤ 260 g/d	all year	002
Selenium, total recoverable	monthly average	≤ 2 ug/L	all year	002
Selenium, total recoverable	daily maximum	≤ 4 ug/L	all year	002
Selenium, total recoverable	monthly average	≤ 30 g/d	all year	002
Selenium, total recoverable	daily maximum	≤ 70 g/d	all year	002
Boron, total recoverable	monthly average	≤ 1231 ug/L	all year	002
Boron, total recoverable	daily maximum	≤ 1682 ug/L	all year	002
Boron, total recoverable	monthly average	≤ 20970 g/d	all year	002
Boron, total recoverable	daily maximum	≤ 28659 g/d	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Chlorine, total residual	monthly average	≤ 9 ug/L	all year	002
Chlorine, total residual	daily maximum	≤ 18 ug/L	all year	002
Chlorine, total residual	monthly average	≤ 150 g/d	all year	002
Chlorine, total residual	daily maximum	≤ 310 g/d	all year	002
E. coli, colony forming units [CFU]	monthly average	≤ 126 CFU/100mL	all year	002
E. coli, colony forming units [CFU]	daily maximum	≤ 575 CFU/100mL	all year	002
BOD, 5-day, percent removal	monthly average minimum	≥ 85 %	all year	002
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	002
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	003
BOD, 5-day, 20 deg. C	weekly average	≤ 45 mg/L	all year	003
BOD, 5-day, 20 deg. C	monthly average	≤ 510 kg/d	all year	003
BOD, 5-day, 20 deg. C	weekly average	≤ 770 kg/d	all year	003
pH	minimum	≥ 6.5 SU	all year	003
pH	maximum	≤ 9 SU	all year	003
Solids, total suspended	monthly average	≤ 30 mg/L	all year	003
Solids, total suspended	weekly average	≤ 45 mg/L	all year	003
Solids, total suspended	monthly average	≤ 510 kg/d	all year	003
Solids, total suspended	weekly average	≤ 771 kg/d	all year	003
Oil & Grease	monthly average	≤ 10 ug/L	all year	003
Oil & Grease	daily maximum	≤ 15 ug/L	all year	003
Oil & Grease	monthly average	≤ 170 g/d	all year	003
Oil & Grease	daily maximum	≤ 260 g/d	all year	003
Selenium, total recoverable	monthly average	≤ 2 ug/L	all year	003
Selenium, total recoverable	daily maximum	≤ 4 ug/L	all year	003
Selenium, total recoverable	monthly average	≤ 30 g/d	all year	003
Selenium, total recoverable	daily maximum	≤ 70 g/d	all year	003
Boron, total recoverable	monthly average	≤ 1231 ug/L	all year	003
Boron, total recoverable	daily maximum	≤ 1682 ug/L	all year	003
Boron, total recoverable	monthly average	≤ 20970 g/d	all year	003
Boron, total recoverable	daily maximum	≤ 28659 g/d	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Chlorine, total residual	monthly average	≤ 9 ug/L	all year	003
Chlorine, total residual	daily maximum	≤ 18 ug/L	all year	003
Chlorine, total residual	monthly average	≤ 150 g/d	all year	003
Chlorine, total residual	daily maximum	≤ 310 g/d	all year	003
E. coli, colony forming units [CFU]	monthly average	≤ 126 CFU/100mL	all year	003
E. coli, colony forming units [CFU]	daily maximum	≤ 575 CFU/100mL	all year	003
BOD, 5-day, percent removal	monthly average minimum	≥ 85 %	all year	003
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	003
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	004
BOD, 5-day, 20 deg. C	weekly average	≤ 45 mg/L	all year	004
BOD, 5-day, 20 deg. C	monthly average	≤ 510 kg/d	all year	004
BOD, 5-day, 20 deg. C	weekly average	≤ 770 kg/d	all year	004
pH	minimum	≥ 6.5 SU	all year	004
pH	maximum	≤ 9 SU	all year	004
Solids, total suspended	monthly average	≤ 30 mg/L	all year	004
Solids, total suspended	weekly average	≤ 45 mg/L	all year	004
Solids, total suspended	monthly average	≤ 510 kg/d	all year	004
Solids, total suspended	weekly average	≤ 771 kg/d	all year	004
Oil & Grease	monthly average	≤ 10 ug/L	all year	004
Oil & Grease	daily maximum	≤ 15 ug/L	all year	004
Oil & Grease	monthly average	≤ 170 g/d	all year	004
Oil & Grease	daily maximum	≤ 260 g/d	all year	004
Selenium, total recoverable	monthly average	≤ 2 ug/L	all year	004
Selenium, total recoverable	daily maximum	≤ 4 ug/L	all year	004
Selenium, total recoverable	monthly average	≤ 30 g/d	all year	004
Selenium, total recoverable	daily maximum	≤ 70 g/d	all year	004
Boron, total recoverable	monthly average	≤ 1231 ug/L	all year	004
Boron, total recoverable	daily maximum	≤ 1682 ug/L	all year	004
Boron, total recoverable	monthly average	≤ 20970 g/d	all year	004
Boron, total recoverable	daily maximum	≤ 28659 g/d	all year	004
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	004
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	004
Chlorine, total residual	monthly average	≤ 9 ug/L	all year	004
Chlorine, total residual	daily maximum	≤ 18 ug/L	all year	004
Chlorine, total residual	monthly average	≤ 150 g/d	all year	004
Chlorine, total residual	daily maximum	≤ 310 g/d	all year	004
E. coli, colony forming units [CFU]	monthly average	≤ 126 CFU/100mL	all year	004
E. coli, colony forming units [CFU]	daily maximum	≤ 575 CFU/100mL	all year	004
BOD, 5-day, percent removal	monthly average minimum	≥ 85 %	all year	004
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	004
BOD, 5-day, 20 deg. C	monthly average	report only (mg/L)	all year	INF
BOD, 5-day, 20 deg. C	weekly average	report only (mg/L)	all year	INF
Solids, total suspended	monthly average	report only (mg/L)	all year	INF
Solids, total suspended	weekly average	report only (mg/L)	all year	INF

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/AZ0025313 · MCP: https://passage-data.com/mcp