HECLA LTD

NPDES permit ID0000175 · Major NON-POTW · administratively continued, expires 2024-07-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2024-07-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
3of 185 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (201)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMX DA AV report only all year
001Temperature, water deg. centigradeINST MAX report only all year
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 10 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspendedANNL AVG <= 247 lb/d all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]MO AVG <= 1 ug/L all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX <= 1 ug/L all year
001Copper, total [as Cu]MO AVG <= .025 lb/d all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX <= .025 lb/d all year
001Copper, total [as Cu]DAILY MX report only all year
001Zinc, total recoverableMO AVG <= 61.3 ug/L all year
001Zinc, total recoverableDAILY MX <= 154.9 ug/L all year
001Zinc, total recoverableMO AVG <= .27 lb/d all year
001Zinc, total recoverableDAILY MX <= .69 lb/d all year
001Cadmium, total recoverableMO AVG <= .5 ug/L all year
001Cadmium, total recoverableDAILY MX <= 1.5 ug/L all year
001Cadmium, total recoverableMO AVG <= .002 lb/d all year
001Cadmium, total recoverableDAILY MX <= .006 lb/d all year
001Lead, total recoverableMO AVG <= 13.6 ug/L all year
001Lead, total recoverableDAILY MX <= 36.7 ug/L all year
001Lead, total recoverableMO AVG <= .06 lb/d all year
001Lead, total recoverableDAILY MX <= .16 lb/d all year
001Mercury, total recoverableMO AVG <= .05 ug/L all year
001Mercury, total recoverableDAILY MX <= .13 ug/L all year
001Mercury, total recoverableMO AVG <= .0002 lb/d all year
001Mercury, total recoverableDAILY MX <= .0005 lb/d all year
001FlowMO AVG report only all year
001FlowDAILY MX report only all year
001Toxicity, ChronicDAILY MX report only all year
001TU Static 7Day Chronic Ceriodaphnia dubiaSingle Rdg report only all year
001TU Static 7Day Chronic Ceriodaphnia dubiaVALUE report only all year
002Temperature, water deg. centigradeMX DA AV report only all year
002Temperature, water deg. centigradeINST MAX report only all year
002Flow rateMO AVG report only all year
002Flow rateDAILY MX report only all year
002pHINST MIN >= 6.5 SU all year
002pHINST MAX <= 10 SU all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedANNL AVG <= 247 lb/d all year
002Hardness, total [as CaCO3]MO AVG report only all year
002Copper, total [as Cu]MO AVG report only all year
002Copper, total [as Cu]MO AVG <= 1 ug/L all year
002Copper, total [as Cu]DAILY MX report only all year
002Copper, total [as Cu]DAILY MX <= 1 ug/L all year
002Copper, total [as Cu]MO AVG <= .025 lb/d all year
002Copper, total [as Cu]MO AVG report only all year
002Copper, total [as Cu]DAILY MX <= .025 lb/d all year
002Copper, total [as Cu]DAILY MX report only all year
002Zinc, total recoverableMO AVG <= 57.6 ug/L all year
002Zinc, total recoverableDAILY MX <= 145.5 ug/L all year
002Zinc, total recoverableMO AVG <= .271 lb/d all year
002Zinc, total recoverableDAILY MX <= .656 lb/d all year
002Cadmium, total recoverableMO AVG <= .5 ug/L all year
002Cadmium, total recoverableDAILY MX <= 1.4 ug/L all year
002Cadmium, total recoverableMO AVG <= .002 lb/d all year
002Cadmium, total recoverableDAILY MX <= .006 lb/d all year
002Lead, total recoverableMO AVG <= 12.8 ug/L all year
002Lead, total recoverableDAILY MX <= 34.4 ug/L all year
002Lead, total recoverableMO AVG <= .06 lb/d all year
002Lead, total recoverableDAILY MX <= .162 lb/d all year
002Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only all year
002Mercury, total recoverableMO AVG <= .036 ug/L all year
002Mercury, total recoverableDAILY MX <= .099 ug/L all year
002Mercury, total recoverableMO AVG <= .0002 lb/d all year
002Mercury, total recoverableDAILY MX <= .0005 lb/d all year
002FlowMO AVG report only all year
002FlowDAILY MX report only all year
002TU Static 7Day Chronic Ceriodaphnia dubiaSingle Rdg report only all year
002TU Static 7Day Chronic Ceriodaphnia dubiaVALUE report only all year
003Temperature, water deg. centigradeMX DA AV report only all year
003Temperature, water deg. centigradeINST MAX report only all year
003Flow rateMO AVG report only all year
003Flow rateDAILY MX report only all year
003pHINST MIN >= 6.5 SU all year
003pHINST MAX <= 9.9 SU all year
003Solids, total suspendedMO AVG <= 20 mg/L all year
003Solids, total suspendedDAILY MX <= 30 mg/L all year
003Solids, total suspendedANNL AVG <= 188.5 lb/d all year
003Hardness, total [as CaCO3]MO AVG report only all year
003Copper, total [as Cu]MO AVG report only all year
003Copper, total [as Cu]MO AVG <= 1 ug/L all year
003Copper, total [as Cu]DAILY MX report only all year
003Copper, total [as Cu]DAILY MX <= 1 ug/L all year
003Copper, total [as Cu]MO AVG <= .025 lb/d all year
003Copper, total [as Cu]MO AVG report only all year
003Copper, total [as Cu]DAILY MX <= .025 lb/d all year
003Copper, total [as Cu]DAILY MX report only all year
003Zinc, total recoverableMO AVG <= 52.9 ug/L all year
003Zinc, total recoverableDAILY MX <= 164.6 ug/L all year
003Zinc, total recoverableMO AVG <= .47 lb/d all year
003Zinc, total recoverableDAILY MX <= 1.47 lb/d all year
003Cadmium, total recoverableMO AVG <= .8 ug/L all year
003Cadmium, total recoverableDAILY MX <= 1.5 ug/L all year
003Cadmium, total recoverableMO AVG <= .007 lb/d all year
003Cadmium, total recoverableDAILY MX <= .013 lb/d all year
003Lead, total recoverableMO AVG <= 18.6 ug/L all year
003Lead, total recoverableDAILY MX <= 24.9 ug/L all year
003Lead, total recoverableMO AVG <= .17 lb/d all year
003Lead, total recoverableDAILY MX <= .22 lb/d all year
003Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only all year
003Mercury, total recoverableMO AVG <= .01 ug/L all year
003Mercury, total recoverableDAILY MX <= .04 ug/L all year
003Mercury, total recoverableMO AVG <= .0001 lb/d all year
003Mercury, total recoverableDAILY MX <= .0004 lb/d all year
003FlowMO AVG report only all year
003FlowDAILY MX report only all year
003TU Static 7Day Chronic Ceriodaphnia dubiaSingle Rdg report only all year
003TU Static 7Day Chronic Ceriodaphnia dubiaVALUE report only all year
REC1Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep, Oct, Nov
REC1Temperature, water deg. centigradeDAILY MX report only Jun, Jul, Aug, Sep, Oct, Nov
REC1Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep, Oct, Nov
REC1Temperature, water deg. centigradeDAILY MX report only Jun, Jul, Aug, Sep, Oct, Nov
REC1pHINST MIN report only all year
REC1pHINST MAX report only all year
REC1pHINST MIN report only all year
REC1pHINST MAX report only all year
REC1Alkalinity, total [as CaCO3]DAILY MX report only all year
REC1Carbon, dissolved organic [as C]DAILY MX report only all year
REC1Hardness, total [as CaCO3]DAILY MX report only all year
REC1Hardness, total [as CaCO3]DAILY MX report only all year
REC1Calcium, dissolved [as Ca]DAILY MX report only all year
REC1Magnesium, dissolved [as Mg]DAILY MX report only all year
REC1Sodium, dissolved [as Na]INST MAX report only all year
REC1Potassium, dissolved [as K]DAILY MX report only all year
REC1Chloride, dissolved in waterDAILY MX report only all year
REC1Sulfate, dissolved [as SO4]DAILY MX report only all year
REC1Cadmium, dissolved [as Cd]DAILY MX report only all year
REC1Cadmium, dissolved [as Cd]DAILY MX report only all year
REC1Copper, dissolved [as Cu]DAILY MX report only all year
REC1Copper, dissolved [as Cu]DAILY MX report only all year
REC1Lead, dissolved [as Pb]DAILY MX report only all year
REC1Lead, dissolved [as Pb]DAILY MX report only all year
REC1Zinc, dissolved [as Zn]DAILY MX report only all year
REC1Zinc, dissolved [as Zn]DAILY MX report only all year
REC1Mercury, total recoverableDAILY MX report only all year
REC1Mercury, total recoverableDAILY MX report only all year
REC2Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep, Oct, Nov
REC2Temperature, water deg. centigradeDAILY MX report only Jun, Jul, Aug, Sep, Oct, Nov
REC2Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep, Oct, Nov
REC2Temperature, water deg. centigradeDAILY MX report only Jun, Jul, Aug, Sep, Oct, Nov
REC2pHINST MIN report only all year
REC2pHINST MAX report only all year
REC2pHINST MIN report only all year
REC2pHINST MAX report only all year
REC2Alkalinity, total [as CaCO3]DAILY MX report only all year
REC2Carbon, dissolved organic [as C]DAILY MX report only all year
REC2Hardness, total [as CaCO3]DAILY MX report only all year
REC2Hardness, total [as CaCO3]DAILY MX report only all year
REC2Calcium, dissolved [as Ca]DAILY MX report only all year
REC2Magnesium, dissolved [as Mg]DAILY MX report only all year
REC2Sodium, dissolved [as Na]INST MAX report only all year
REC2Potassium, dissolved [as K]DAILY MX report only all year
REC2Chloride, dissolved in waterDAILY MX report only all year
REC2Sulfate, dissolved [as SO4]DAILY MX report only all year
REC2Cadmium, dissolved [as Cd]DAILY MX report only all year
REC2Cadmium, dissolved [as Cd]DAILY MX report only all year
REC2Copper, dissolved [as Cu]DAILY MX report only all year
REC2Copper, dissolved [as Cu]DAILY MX report only all year
REC2Lead, dissolved [as Pb]DAILY MX report only all year
REC2Lead, dissolved [as Pb]DAILY MX report only all year
REC2Zinc, dissolved [as Zn]DAILY MX report only all year
REC2Zinc, dissolved [as Zn]DAILY MX report only all year
REC2Mercury, total recoverableDAILY MX report only all year
REC2Mercury, total recoverableDAILY MX report only all year
REC3Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep, Oct, Nov
REC3Temperature, water deg. centigradeDAILY MX report only Jun, Jul, Aug, Sep, Oct, Nov
REC3Temperature, water deg. centigradeMO AVG report only Jun, Jul, Aug, Sep, Oct, Nov
REC3Temperature, water deg. centigradeDAILY MX report only Jun, Jul, Aug, Sep, Oct, Nov
REC3pHINST MIN report only all year
REC3pHINST MAX report only all year
REC3pHINST MIN report only all year
REC3pHINST MAX report only all year
REC3Alkalinity, total [as CaCO3]DAILY MX report only all year
REC3Carbon, dissolved organic [as C]DAILY MX report only all year
REC3Hardness, total [as CaCO3]DAILY MX report only all year
REC3Hardness, total [as CaCO3]DAILY MX report only all year
REC3Calcium, dissolved [as Ca]DAILY MX report only all year
REC3Magnesium, dissolved [as Mg]DAILY MX report only all year
REC3Sodium, dissolved [as Na]INST MAX report only all year
REC3Potassium, dissolved [as K]DAILY MX report only all year
REC3Chloride, dissolved in waterDAILY MX report only all year
REC3Sulfate, dissolved [as SO4]DAILY MX report only all year
REC3Cadmium, dissolved [as Cd]DAILY MX report only all year
REC3Cadmium, dissolved [as Cd]DAILY MX report only all year
REC3Copper, dissolved [as Cu]DAILY MX report only all year
REC3Copper, dissolved [as Cu]DAILY MX report only all year
REC3Lead, dissolved [as Pb]DAILY MX report only all year
REC3Lead, dissolved [as Pb]DAILY MX report only all year
REC3Zinc, dissolved [as Zn]DAILY MX report only all year
REC3Zinc, dissolved [as Zn]DAILY MX report only all year
REC3Mercury, total recoverableDAILY MX report only all year
REC3Mercury, total recoverableDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states