GUAM WATERWORKS AUTHORITY

NPDES permit GU0020371 · Minor POTW · effective, expires 2026-11-30 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
5of 18 forms filed late

Last period with anything received: 2026-06-30.

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 (52)

OutfallParameterStatisticLimitMonths
001TurbidityINST MAX <= 12.5 NTU all year
001TurbidityINST MAX <= 12.5 NTU all year
001pHINST MIN >= 6.5 SU all year
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 6.26 lb/d all year
001Solids, total suspendedMO AVG <= 6.26 lb/d all year
001Solids, total suspendedDAILY MX <= 9.34 lb/d all year
001Solids, total suspendedDAILY MX <= 9.34 lb/d all year
001Aluminum, total recoverableDAILY MX <= 1 mg/L all year
001Aluminum, total recoverableDAILY MX <= 1 mg/L all year
001Aluminum, total recoverableDAILY MX <= .21 lb/d all year
001Aluminum, total recoverableDAILY MX <= .21 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .05 ug/L all year
001Chlorine, total residualMO AVG <= .05 ug/L all year
001Chlorine, total residualDAILY MX <= .05 ug/L all year
001Chlorine, total residualDAILY MX <= .05 ug/L all year
001Solids, total dissolvedMO AVG <= 1000 mg/L all year
001Solids, total dissolvedMO AVG <= 1000 mg/L all year
001Solids, total dissolvedDAILY MX <= 1000 mg/L all year
001Solids, total dissolvedDAILY MX <= 1000 mg/L all year
001Solids, total dissolvedMO AVG <= 208.63 lb/d all year
001Solids, total dissolvedMO AVG <= 208.63 lb/d all year
001Solids, total dissolvedDAILY MX <= 208.63 lb/d all year
001Solids, total dissolvedDAILY MX <= 208.63 lb/d all year
UR1TurbidityINST MAX report only all year
UR1Solids, total suspendedMO AVG report only all year
UR1Solids, total suspendedDAILY MX report only all year
UR1Solids, total suspendedMO AVG report only all year
UR1Solids, total suspendedDAILY MX report only all year
UR1Hardness, total [as CaCO3]MO AVG report only all year
UR1Hardness, total [as CaCO3]DAILY MX report only all year
UR1Hardness, total [as CaCO3]MO AVG report only all year
UR1Hardness, total [as CaCO3]DAILY MX report only all year
UR2TurbidityINST MAX report only all year
UR2Solids, total suspendedMO AVG report only all year
UR2Solids, total suspendedDAILY MX report only all year
UR2Solids, total suspendedMO AVG report only all year
UR2Solids, total suspendedDAILY MX report only all year
UR2Hardness, total [as CaCO3]MO AVG report only all year
UR2Hardness, total [as CaCO3]DAILY MX report only all year
UR2Hardness, total [as CaCO3]MO AVG report only all year
UR2Hardness, total [as CaCO3]DAILY 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