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White Mountain Apache Tribe

Sewage treatment plant, Whiteriver, Arizona. NPDES permit AZ0024589 expired Oct 31, 2026. Last 12 months: over a limit 61 times (last April 2026), 289 required values missing, 16 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly
Last report on file
July 2026
Oct 2024 – Sep 2025
80 values over a limit, 341 required values missing, 14 of 25 reports late

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

All 61 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
October 2025E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
October 2025E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
October 2025E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
October 2025Nitrogen, ammonia total [as N], daily maximum68.8 Ratio≤ 1 Ratio6780%
October 2025Nitrogen, ammonia total [as N], daily maximum68.8 Ratio≤ 1 Ratio6780%
October 2025Nitrogen, ammonia total [as N], monthly average68.8 Ratio≤ 1 Ratio6780%
October 2025Nitrogen, ammonia total [as N], monthly average68.8 Ratio≤ 1 Ratio6780%
October 2025Turbidity, daily maximum27 NTU≤ 25 NTU—
November 2025E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
November 2025E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
November 2025E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
November 2025E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
November 2025Nitrogen, ammonia total [as N], daily maximum7.27 Ratio≤ 1 Ratio627%
November 2025Nitrogen, ammonia total [as N], daily maximum7.27 Ratio≤ 1 Ratio627%
November 2025Nitrogen, ammonia total [as N], monthly average7.27 Ratio≤ 1 Ratio627%
November 2025Nitrogen, ammonia total [as N], monthly average7.27 Ratio≤ 1 Ratio627%
December 2025E. coli, daily maximum1553.1 MPN/100mL≤ 88 CFU/100mL1665%
December 2025E. coli, daily maximum1553.1 MPN/100mL≤ 88 CFU/100mL1665%
December 2025E. coli, geometric mean1553.1 MPN/100mL≤ 47 CFU/100mL3204%
December 2025E. coli, geometric mean1553.1 MPN/100mL≤ 47 CFU/100mL3204%
December 2025Nitrogen, ammonia total [as N], daily maximum5.66 Ratio≤ 1 Ratio466%
December 2025Nitrogen, ammonia total [as N], daily maximum5.66 Ratio≤ 1 Ratio466%
December 2025Nitrogen, ammonia total [as N], monthly average5.66 Ratio≤ 1 Ratio466%
December 2025Nitrogen, ammonia total [as N], monthly average5.66 Ratio≤ 1 Ratio466%
January 2026E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
January 2026E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
January 2026E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
January 2026E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
January 2026Nitrogen, ammonia total [as N], daily maximum2.4 Ratio≤ 1 Ratio140%
January 2026Nitrogen, ammonia total [as N], daily maximum2.4 Ratio≤ 1 Ratio140%
January 2026Nitrogen, ammonia total [as N], monthly average2.4 Ratio≤ 1 Ratio140%
January 2026Nitrogen, ammonia total [as N], monthly average2.4 Ratio≤ 1 Ratio140%
February 2026Chlorine, total residual, daily maximum.3 mg/L≤ .1 mg/L200%
February 2026Chlorine, total residual, daily maximum.3 mg/L≤ .1 mg/L200%
February 2026Chlorine, total residual, monthly average.3 mg/L≤ .1 mg/L200%
February 2026Chlorine, total residual, monthly average.3 mg/L≤ .1 mg/L200%
February 2026E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
February 2026E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
February 2026E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
February 2026E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
February 2026Nitrogen, ammonia total [as N], daily maximum240 Ratio≤ 1 Ratio23900%
February 2026Nitrogen, ammonia total [as N], daily maximum240 Ratio≤ 1 Ratio23900%
February 2026Nitrogen, ammonia total [as N], monthly average240 Ratio≤ 1 Ratio23900%
February 2026Nitrogen, ammonia total [as N], monthly average240 Ratio≤ 1 Ratio23900%
March 2026E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
March 2026E. coli, daily maximum2419.6 MPN/100mL≤ 88 CFU/100mL2650%
March 2026E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
March 2026E. coli, geometric mean2419.6 MPN/100mL≤ 47 CFU/100mL5048%
March 2026Nitrogen, ammonia total [as N], daily maximum2.3 Ratio≤ 1 Ratio130%
March 2026Nitrogen, ammonia total [as N], daily maximum2.3 Ratio≤ 1 Ratio130%
March 2026Nitrogen, ammonia total [as N], monthly average2.3 Ratio≤ 1 Ratio130%
March 2026Nitrogen, ammonia total [as N], monthly average2.3 Ratio≤ 1 Ratio130%
April 2026E. coli, daily maximum2419.6 CFU/100mL≤ 88 CFU/100mL2650%
April 2026E. coli, daily maximum2419.6 CFU/100mL≤ 88 CFU/100mL2650%
April 2026E. coli, geometric mean2419.6 CFU/100mL≤ 47 CFU/100mL5048%
April 2026E. coli, geometric mean2419.6 CFU/100mL≤ 47 CFU/100mL5048%
April 2026Nitrogen, ammonia total [as N], daily maximum2.3 Ratio≤ 1 Ratio130%
April 2026Nitrogen, ammonia total [as N], daily maximum2.3 Ratio≤ 1 Ratio130%
April 2026Nitrogen, ammonia total [as N], monthly average2.3 Ratio≤ 1 Ratio130%
April 2026Nitrogen, ammonia total [as N], monthly average2.3 Ratio≤ 1 Ratio130%

Limits in force (8)

ParameterStatisticLimitMonths
Temperature, water deg. centigradeweekly averagereport only (deg C)all year
Temperature, water deg. centigradeweekly averagereport only (deg C)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Oil & grease, total recoverable [Q/C]monthly average≤ 10 mg/Lall year
Oil & grease, total recoverable [Q/C]monthly average≤ 10 mg/Lall year
Oil & grease, total recoverable [Q/C]daily maximum≤ 15 mg/Lall year
Oil & grease, total recoverable [Q/C]daily maximum≤ 15 mg/Lall year

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AZ0024589 · MCP: https://passage-data.com/mcp