GUAM WATERWORKS AUTHORITY

NPDES permit GU0020141 · Major POTW · expired, expires 2024-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2024-12-31 and is expired: 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

5values over a limit
32required values missing, on 8 form(s)
6of 34 forms filed late

Last period with anything received: 2026-06-30. Most often over: Enterococci (3), Copper, total recoverable (1), pH (1).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (175)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CHI WK AV <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 3002 lb/d all year
001BOD, 5-day, 20 deg. CHI WK AV <= 4504 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedHI WK AV <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 3002 lb/d all year
001Solids, total suspendedHI WK AV <= 4504 lb/d all year
001Nitrogen, nitrate total [as N]MO AVG <= 30.2 mg/L all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphate, ortho [as PO4]MO AVG <= 8 mg/L all year
001Phosphate, ortho [as PO4]DAILY MX report only all year
001Phosphate, ortho [as PO4]DAILY MX report only all year
001Zinc, total recoverableMO AVG <= 86 ug/L all year
001Zinc, total recoverableDAILY MX <= 95 ug/L all year
001Zinc, total recoverableDAILY MX report only all year
001Zinc, total recoverableDAILY MX report only all year
001Copper, total recoverableMO AVG <= 3.1 ug/L all year
001Copper, total recoverableDAILY MX <= 4.8 ug/L all year
001Copper, total recoverableDAILY MX report only all year
001Copper, total recoverableDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG <= 12 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= 1.5 mg/L all year
001Chlorine, total residualDAILY MX <= 2.46 mg/L all year
001EnterococciMO AVG <= 35 CFU/100mL all year
001EnterococciDAILY MX <= 104 CFU/100mL all year
001Ammonia [as N] + unionized ammoniaMO AVG report only all year
001Ammonia [as N] + unionized ammoniaDAILY MX report only all year
001Oil & grease, total recoverableMO AVG <= 10 mg/L all year
001Oil & grease, total recoverableDAILY MX <= 15 mg/L all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Pass/Fail Static 20 Minute Fertilization Chronic Strongylocentrotus purpuratusMO AVG report only all year
001Pass/Fail Static 20 Minute Fertilization Chronic Strongylocentrotus purpuratusDAILY MX report only all year
001YCyanide, total [as CN]DAILY MX report only all year
001YAsbestosDAILY MX report only all year
001YArsenic, total recoverableDAILY MX report only all year
001YSelenium, total recoverableDAILY MX report only all year
001YThallium, total recoverableDAILY MX report only all year
001YBeryllium, total recoverable [as Be]DAILY MX report only all year
001YChromium, hexavalent [as Cr]DAILY MX report only all year
001YChromium, trivalent [as Cr]DAILY MX report only all year
001YNickel, total recoverableDAILY MX report only all year
001YSilver total recoverableDAILY MX report only all year
001YZinc, total recoverableDAILY MX report only all year
001YCadmium, total recoverableDAILY MX report only all year
001YLead, total recoverableDAILY MX report only all year
001YCopper, total recoverableDAILY MX report only all year
001YAntimony, total recoverableDAILY MX report only all year
001Y2-Methyl-4,6-dinitrophenolDAILY MX report only all year
001YDichlorobromomethaneDAILY MX report only all year
001YCarbon tetrachlorideDAILY MX report only all year
001Y1,2-DichloroethaneDAILY MX report only all year
001YBromoformDAILY MX report only all year
001YDibromochloromethaneDAILY MX report only all year
001YChloroformDAILY MX report only all year
001YTolueneDAILY MX report only all year
001YBenzeneDAILY MX report only all year
001Y.delta.-BHCDAILY MX report only all year
001YAcenaphthyleneDAILY MX report only all year
001YAcenaphtheneDAILY MX report only all year
001YAcroleinDAILY MX report only all year
001YAcrylonitrileDAILY MX report only all year
001YAnthraceneDAILY MX report only all year
001YBenzo[b]fluorantheneDAILY MX report only all year
001YBenzo[k]fluorantheneDAILY MX report only all year
001YBenzo[a]pyreneDAILY MX report only all year
001YBis[2-chloroethyl] etherDAILY MX report only all year
001YBis[2-chloroethoxy]methaneDAILY MX report only all year
001YBis[2-chloroisopropyl] etherDAILY MX report only all year
001YButyl benzyl phthalateDAILY MX report only all year
001YChlorobenzeneDAILY MX report only all year
001YChryseneDAILY MX report only all year
001YDiethyl phthalateDAILY MX report only all year
001YDimethyl phthalateDAILY MX report only all year
001Y1,2-DiphenylhydrazineDAILY MX report only all year
001YEndosulfan sulfateDAILY MX report only all year
001Y.beta.-EndosulfanDAILY MX report only all year
001Y.alpha.-EndosulfanDAILY MX report only all year
001YEndrin aldehydeDAILY MX report only all year
001YEthylbenzeneDAILY MX report only all year
001YFluorantheneDAILY MX report only all year
001YFluoreneDAILY MX report only all year
001YHexachlorocyclopentadieneDAILY MX report only all year
001YHexachlorobutadieneDAILY MX report only all year
001YHexachloroethaneDAILY MX report only all year
001YIndeno[1,2,3-cd]pyreneDAILY MX report only all year
001YIsophoroneDAILY MX report only all year
001YMethyl bromide [Bromomethane]DAILY MX report only all year
001YMethyl chloride [Chloromethane]DAILY MX report only all year
001YMethylene chlorideDAILY MX report only all year
001YN-Nitrosodi-N-propylamineDAILY MX report only all year
001YN-NitrosodiphenylamineDAILY MX report only all year
001YN-Nitrosodimethylamine [NDMA]DAILY MX report only all year
001YNitrobenzeneDAILY MX report only all year
001YPhenanthreneDAILY MX report only all year
001YPyreneDAILY MX report only all year
001YTetrachloroethyleneDAILY MX report only all year
001Y1,1-DichloroethaneDAILY MX report only all year
001Y1,1-DichloroethyleneDAILY MX report only all year
001Y1,1,1-TrichloroethaneDAILY MX report only all year
001Y1,1,2-TrichloroethaneDAILY MX report only all year
001Y1,1,2,2-TetrachloroethaneDAILY MX report only all year
001YBenzo[ghi]peryleneDAILY MX report only all year
001YBenzo[a]anthraceneDAILY MX report only all year
001Y1,2-DichlorobenzeneDAILY MX report only all year
001Y1,2-DichloropropaneDAILY MX report only all year
001Ytrans-1,2-DichloroethyleneDAILY MX report only all year
001Y1,2,4-TrichlorobenzeneDAILY MX report only all year
001YDibenz[a,h]anthraceneDAILY MX report only all year
001Y1,3-DichlorobenzeneDAILY MX report only all year
001Y1,4-DichlorobenzeneDAILY MX report only all year
001Y2-Chloroethyl vinyl ether, [mixed]DAILY MX report only all year
001Y2-ChloronaphthaleneDAILY MX report only all year
001Y2-ChlorophenolDAILY MX report only all year
001Y2-NitrophenolDAILY MX report only all year
001YDi-n-octyl phthalateDAILY MX report only all year
001Y2,4-DichlorophenolDAILY MX report only all year
001Y2,4-DimethylphenolDAILY MX report only all year
001Y2,4-DinitrotolueneDAILY MX report only all year
001Y2,4-DinitrophenolDAILY MX report only all year
001Y2,4,6-TrichlorophenolDAILY MX report only all year
001Y2,6-DinitrotolueneDAILY MX report only all year
001Y3,3'-DichlorobenzidineDAILY MX report only all year
001Y4-Bromophenyl phenyl etherDAILY MX report only all year
001Y4-Chlorophenyl phenyl etherDAILY MX report only all year
001Y4-NitrophenolDAILY MX report only all year
001YPCB-1016DAILY MX report only all year
001Y2,3,7,8-Tetrachlorodibenzo-p-dioxinDAILY MX report only all year
001YPhenolDAILY MX report only all year
001YNaphthaleneDAILY MX report only all year
001YPentachlorophenolDAILY MX report only all year
001YDi[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
001YDi-n-butyl phthalateDAILY MX report only all year
001YBenzidineDAILY MX report only all year
001YVinyl chlorideDAILY MX report only all year
001YTrichloroethyleneDAILY MX report only all year
001Y4,4'-DDTDAILY MX report only all year
001Y4,4'-DDDDAILY MX report only all year
001Y4,4'-DDEDAILY MX report only all year
001YAldrinDAILY MX report only all year
001Y.alpha.-BHCDAILY MX report only all year
001Y.beta.-BHCDAILY MX report only all year
001Y.gamma.-BHCDAILY MX report only all year
001YChlordane [tech mix. and metabolites]DAILY MX report only all year
001YDieldrinDAILY MX report only all year
001YEndrinDAILY MX report only all year
001YToxapheneDAILY MX report only all year
001YHeptachlorDAILY MX report only all year
001YHeptachlor epoxideDAILY MX report only all year
001YPCB-1221DAILY MX report only all year
001YPCB-1232DAILY MX report only all year
001YPCB-1242DAILY MX report only all year
001YPCB-1248DAILY MX report only all year
001YPCB-1254DAILY MX report only all year
001YPCB-1260DAILY MX report only all year
001YHexachlorobenzeneDAILY MX report only all year
001Y4-Chloro-3-methylphenolDAILY MX report only all year
001YMercury, total recoverableDAILY MX report only all year
001Y1,3-DichloropropeneDAILY MX report only all year
001YChloroethaneDAILY MX report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CHI WK AV report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CHI WK AV report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedHI WK AV report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedHI WK AV 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