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Colorado Department of Local Affairs

Water Supply, Las Animas, Colorado. NPDES permit CO0048801 expired Jul 31, 2020; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (12 values), form Q quarterly (2 values), form S twice a year, form W twice a year
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 20 reports late

Limits in force (22)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademaximum weekly averagereport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendedmaximum 7-day average≤ 45 mg/Lall year
Arsenic, total recoverable30-day averagereport only (ug/L)all year
Iron, total recoverable30-day averagereport only (ug/L)all year
Silver, potentially dissolved30-day averagereport only (ug/L)all year
Silver, potentially dissolveddaily maximumreport only (ug/L)all year
Copper, potentially dissolved30-day averagereport only (ug/L)all year
Copper, potentially dissolveddaily maximumreport only (ug/L)all year
Selenium, potentially dissolvd30-day average≤ 4.6 ug/Lall year
Selenium, potentially dissolvddaily maximum≤ 39 ug/Lall year
Oil and greaseinstantaneous maximum≤ 10 mg/Lall year
Radium 226 + radium 228, total30-day averagereport only (pCi/L)all year
Flow, in conduit or thru treatment plant30-day average≤ .8 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Mercury, total [as Hg]30-day average≤ .13 ug/Lall year
Oil and grease visualinstantaneous maximumreport only (abst=0;prst=1)all year
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubiaminimum value≥ 100 %all year
LC50 Static Renewal 96Hr Acute Pimephales promelasminimum value≥ 100 %all year

How strict are these limits?

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

Same industry: the 13 Water Supply permits in Colorado.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CO0048801 · MCP: https://passage-data.com/mcp