GUAM WATERWORKS AUTHORITY

NPDES permit GU0020273 · Minor POTW · expired, expires 2024-12-31 · 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 2024-12-31 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

33values over a limit
0required values missing, on 0 form(s)
13of 46 forms filed late

Last period with anything received: 2026-06-30. Most often over: Flow, minimum flow range (9), BOD, 5-day, percent removal (8), Flow, in conduit or thru treatment plant (7).

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 (173)

OutfallParameterStatisticLimitMonths
004Temperature, water deg. centigradeDAILY MX report only all year
004Flow, minimum flow rangeMINIMUM >= 1.5 cfs all year
004Oxygen, dissolved [DO]DAILY MX report only all year
004BOD, 5-day, 20 deg. CMO AVG <= 45 mg/L all year
004BOD, 5-day, 20 deg. CWKLY AVG <= 65 mg/L all year
004BOD, 5-day, 20 deg. CMO AVG <= 146 lb/d all year
004BOD, 5-day, 20 deg. CWKLY AVG <= 211 lb/d all year
004pHMINIMUM >= 6.5 SU all year
004pHMAXIMUM <= 8.5 SU all year
004Solids, total suspendedMO AVG <= 45 mg/L all year
004Solids, total suspendedWKLY AVG <= 65 mg/L all year
004Solids, total suspendedMO AVG <= 146 lb/d all year
004Solids, total suspendedWKLY AVG <= 211 lb/d all year
004Nitrogen, ammonia total [as N]MO AVG report only all year
004Nitrogen, ammonia total [as N]DAILY MX report only all year
004Nitrogen, ammonia total [as N]DAILY MX <= 7 Ratio all year
004Nitrite + Nitrate total [as N]MO AVG <= 4.6 mg/L all year
004Nitrite + Nitrate total [as N]DAILY MX report only all year
004Nitrite + Nitrate total [as N]DAILY MX report only all year
004Phosphate, ortho [as PO4]MO AVG <= .7 mg/L all year
004Phosphate, ortho [as PO4]DAILY MX report only all year
004Phosphate, ortho [as PO4]DAILY MX report only all year
004Flow, in conduit or thru treatment plantMO AVG <= .39 MGD all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Chlorine, total residualMO AVG <= 6.1 ug/L all year
004Chlorine, total residualDAILY MX <= 12 ug/L all year
004EnterococciMO AVG <= 35 CFU/100mL all year
004EnterococciDAILY MX <= 108 CFU/100mL all year
004BOD, 5-day, percent removalMO AV MN >= 85 % all year
004Solids, suspended percent removalMO AV MN >= 85 % all year
004Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AVG report only all year
004Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX report only all year
004Pass/Fail Static Renewal 7Day Chronic Pimephales promelasMO AVG report only all year
004Pass/Fail Static Renewal 7Day Chronic Pimephales promelasDAILY MX report only all year
004Pass/Fail Static 96Hr Chronic Selen. CapricornutumMO AVG report only all year
004Pass/Fail Static 96Hr Chronic Selen. CapricornutumDAILY MX report only all year
004AOil & grease, total recoverableMO AVG <= 10 mg/L all year
004AOil & grease, total recoverableDAILY MX <= 15 mg/L all year
004YCyanide, total [as CN]DAILY MX report only all year
004YAsbestosDAILY MX report only all year
004YArsenic, total recoverableDAILY MX report only all year
004YSelenium, total recoverableDAILY MX report only all year
004YThallium, total recoverableDAILY MX report only all year
004YBeryllium, total recoverable [as Be]DAILY MX report only all year
004YChromium, hexavalent [as Cr]DAILY MX report only all year
004YChromium, trivalent [as Cr]DAILY MX report only all year
004YNickel, total recoverableDAILY MX report only all year
004YSilver total recoverableDAILY MX report only all year
004YZinc, total recoverableDAILY MX report only all year
004YCadmium, total recoverableDAILY MX report only all year
004YLead, total recoverableDAILY MX report only all year
004YCopper, total recoverableDAILY MX report only all year
004YAntimony, total recoverableDAILY MX report only all year
004Y2-Methyl-4,6-dinitrophenolDAILY MX report only all year
004YDichlorobromomethaneDAILY MX report only all year
004YCarbon tetrachlorideDAILY MX report only all year
004Y1,2-DichloroethaneDAILY MX report only all year
004YBromoformDAILY MX report only all year
004YDibromochloromethaneDAILY MX report only all year
004YChloroformDAILY MX report only all year
004YTolueneDAILY MX report only all year
004YBenzeneDAILY MX report only all year
004Y.delta.-BHCDAILY MX report only all year
004YAcenaphthyleneDAILY MX report only all year
004YAcenaphtheneDAILY MX report only all year
004YAcroleinDAILY MX report only all year
004YAcrylonitrileDAILY MX report only all year
004YAnthraceneDAILY MX report only all year
004YBenzo[b]fluorantheneDAILY MX report only all year
004YBenzo[k]fluorantheneDAILY MX report only all year
004YBenzo[a]pyreneDAILY MX report only all year
004YBis[2-chloroethyl] etherDAILY MX report only all year
004YBis[2-chloroethoxy]methaneDAILY MX report only all year
004YBis[2-chloroisopropyl] etherDAILY MX report only all year
004YButyl benzyl phthalateDAILY MX report only all year
004YChlorobenzeneDAILY MX report only all year
004YChryseneDAILY MX report only all year
004YDiethyl phthalateDAILY MX report only all year
004YDimethyl phthalateDAILY MX report only all year
004Y1,2-DiphenylhydrazineDAILY MX report only all year
004YEndosulfan sulfateDAILY MX report only all year
004Y.beta.-EndosulfanDAILY MX report only all year
004Y.alpha.-EndosulfanDAILY MX report only all year
004YEndrin aldehydeDAILY MX report only all year
004YEthylbenzeneDAILY MX report only all year
004YFluorantheneDAILY MX report only all year
004YFluoreneDAILY MX report only all year
004YHexachlorocyclopentadieneDAILY MX report only all year
004YHexachlorobutadieneDAILY MX report only all year
004YHexachloroethaneDAILY MX report only all year
004YIndeno[1,2,3-cd]pyreneDAILY MX report only all year
004YIsophoroneDAILY MX report only all year
004YMethyl bromide [Bromomethane]DAILY MX report only all year
004YMethyl chloride [Chloromethane]DAILY MX report only all year
004YMethylene chlorideDAILY MX report only all year
004YN-Nitrosodi-N-propylamineDAILY MX report only all year
004YN-NitrosodiphenylamineDAILY MX report only all year
004YN-Nitrosodimethylamine [NDMA]DAILY MX report only all year
004YNitrobenzeneDAILY MX report only all year
004YPhenanthreneDAILY MX report only all year
004YPyreneDAILY MX report only all year
004YTetrachloroethyleneDAILY MX report only all year
004Y1,1-DichloroethaneDAILY MX report only all year
004Y1,1-DichloroethyleneDAILY MX report only all year
004Y1,1,1-TrichloroethaneDAILY MX report only all year
004Y1,1,2-TrichloroethaneDAILY MX report only all year
004Y1,1,2,2-TetrachloroethaneDAILY MX report only all year
004YBenzo[ghi]peryleneDAILY MX report only all year
004YBenzo[a]anthraceneDAILY MX report only all year
004Y1,2-DichlorobenzeneDAILY MX report only all year
004Y1,2-DichloropropaneDAILY MX report only all year
004Ytrans-1,2-DichloroethyleneDAILY MX report only all year
004Y1,2,4-TrichlorobenzeneDAILY MX report only all year
004YDibenz[a,h]anthraceneDAILY MX report only all year
004Y1,3-DichlorobenzeneDAILY MX report only all year
004Y1,4-DichlorobenzeneDAILY MX report only all year
004Y2-Chloroethyl vinyl ether, [mixed]DAILY MX report only all year
004Y2-ChloronaphthaleneDAILY MX report only all year
004Y2-ChlorophenolDAILY MX report only all year
004Y2-NitrophenolDAILY MX report only all year
004YDi-n-octyl phthalateDAILY MX report only all year
004Y2,4-DichlorophenolDAILY MX report only all year
004Y2,4-DimethylphenolDAILY MX report only all year
004Y2,4-DinitrotolueneDAILY MX report only all year
004Y2,4-DinitrophenolDAILY MX report only all year
004Y2,4,6-TrichlorophenolDAILY MX report only all year
004Y2,6-DinitrotolueneDAILY MX report only all year
004Y3,3'-DichlorobenzidineDAILY MX report only all year
004Y4-Bromophenyl phenyl etherDAILY MX report only all year
004Y4-Chlorophenyl phenyl etherDAILY MX report only all year
004Y4-NitrophenolDAILY MX report only all year
004YPCB-1016DAILY MX report only all year
004Y2,3,7,8-Tetrachlorodibenzo-p-dioxinDAILY MX report only all year
004YPhenolDAILY MX report only all year
004YNaphthaleneDAILY MX report only all year
004YPentachlorophenolDAILY MX report only all year
004YDi[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
004YDi-n-butyl phthalateDAILY MX report only all year
004YBenzidineDAILY MX report only all year
004YVinyl chlorideDAILY MX report only all year
004YTrichloroethyleneDAILY MX report only all year
004Y4,4'-DDTDAILY MX report only all year
004Y4,4'-DDDDAILY MX report only all year
004Y4,4'-DDEDAILY MX report only all year
004YAldrinDAILY MX report only all year
004Y.alpha.-BHCDAILY MX report only all year
004Y.beta.-BHCDAILY MX report only all year
004Y.gamma.-BHCDAILY MX report only all year
004YChlordane [tech mix. and metabolites]DAILY MX report only all year
004YDieldrinDAILY MX report only all year
004YEndrinDAILY MX report only all year
004YToxapheneDAILY MX report only all year
004YHeptachlorDAILY MX report only all year
004YHeptachlor epoxideDAILY MX report only all year
004YPCB-1221DAILY MX report only all year
004YPCB-1232DAILY MX report only all year
004YPCB-1242DAILY MX report only all year
004YPCB-1248DAILY MX report only all year
004YPCB-1254DAILY MX report only all year
004YPCB-1260DAILY MX report only all year
004YHexachlorobenzeneDAILY MX report only all year
004Y4-Chloro-3-methylphenolDAILY MX report only all year
004YMercury, total recoverableDAILY MX report only all year
004Y1,3-DichloropropeneDAILY MX report only all year
004YChloroethaneDAILY MX report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CWKLY AVG report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CWKLY AVG report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedWKLY AVG report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedWKLY AVG 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