Velarion Records

Clean Water Act discharge permit · NPDES NM0027987

RIO RANCHO, CITY OF WWTP #2, Rio Rancho, NM: NPDES NM0027987 discharge permit, effluent exceedances, inspections, penalties

RIO RANCHO, CITY OF WWTP #2, held by RIO RANCHO, CITY OF, holds NPDES permit NM0027987, which discharges to Rio Grande. EPA’s file records it issued May 31, 2016 and expiring June 30, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedRIO RANCHO, CITY OF WWTP #2
Permittee as filedRIO RANCHO, CITY OF
NPDES IDNM0027987
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMay 31, 2016
Expiration dateJune 30, 2021
AddressRio Rancho, NM 87124
Receiving waterRIO GRANDE
SubwatershedArroyo de Las Montoyas (HUC 130202030102)
Program components on filePOTW, Pretreatment
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant; the 60 with the most exceedances of 65 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
E. coli511786July 31, 202622,472% over the limit
Arsenic, total [as As]29177June 30, 20155,555,456% over the limit
Nitrogen, ammonia total [as N]27640February 28, 20261,040% over the limit
Chlorine, total residual25435April 30, 202645,355% over the limit
BOD, 5-day, 20 deg. C811131May 31, 202599,999% over the limit
Coliform, fecal general03729May 31, 2008550% over the limit
Solids, total suspended810127February 28, 2026148% over the limit
Oil & Grease5333November 30, 2022153% over the limit
Whole effluent toxicity4202July 31, 2007100% over the limit
Solids, suspended percent removal3142January 31, 20187% over the limit
Flow, in conduit or thru treatment plant6500
pH4390
Oxygen, dissolved [DO]4350
Solids, total dissolved5240
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas4160
BOD, 5-day, percent removal3120
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex4100
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex480
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas480
Coef Of Var Static Renewal 48Hr Acute D. pulex480
Coef Of Var Static Renewal 48Hr Acute Pimephales promelas480
Hexachlorobenzene280
Alpha gross radioactivity280
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas080
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas080
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas080
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia060
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia060
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia060
Arsenic, dry weight050
Nickel, sludge, total, dry weight [as Ni]050
Phosphorus, total [as P]240
Polychlorinated biphenyls [PCBs]240
Selenium, dry weight030
Copper, dry weight030
Cadmium, dry weight030
Compliance w/part 258 sludge requirement030
Molybdenum, sludge, total, dry weight [as Mo]030
Zinc, sludge, total, dry weight [as Zn]030
Lead, sludge, total, dry weight [as Pb]030
Mercury, sludge, total, dry weight [as Hg]030
Chloride [as Cl]020
Toxicity characteristic leaching procedure020
Ann. amt sludge disposed by other method020
Annual amt of sludge incinerated020
Annual sludge production, total020
Annual amount of sludge land applied020
Annual amt. sludge disposed surface unit020
Annual amt sludge disposed in landfill020
Annual amt sludge transported interstate020
Chromium, sludge, total, dry weight [as Cr]020
Level of pathogen requirements achieved020
Description of pathogen option used020
Vector attraction reduction alternative used020
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia020
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas020
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia020
Coef Of Var Static Renewal 7Day Chronic Pimephales promelas020
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia020
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas020

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

The newest 50 of 60.

DateWhat EPA recordedAgency
June 3, 2026Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
May 4, 2026Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
April 21, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 5, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
September 28, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
June 29, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
June 19, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
January 28, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
January 12, 2025Effluent Violations - Numeric effluent violationEP6
January 5, 2025Effluent Violations - Narrative Effluent ViolationEP6
January 1, 2025Effluent Violations - Numeric effluent violationEP6
December 25, 2024Effluent Violations - Numeric effluent violationEP6
December 24, 2024Effluent Violations - Numeric effluent violationEP6
December 8, 2024Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentEP6
September 9, 2024Effluent Violations - Numeric effluent violationEP6
July 12, 2024Effluent Violations - Numeric effluent violationEP6
June 29, 2024Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
June 9, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
May 3, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
June 4, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
November 18, 2022Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
October 7, 2022WW SSO - Overflow to Dry Land or Building BackupEP6
August 27, 2022Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
April 26, 2022Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
April 22, 2022Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
March 12, 2022Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
February 26, 2022Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
January 7, 2022Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
December 2, 2021Effluent Violations - Numeric effluent violationEP6
September 30, 2021Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
September 17, 2021Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
July 15, 2021Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
May 31, 2021Permit Violations - Violation Specified in CommentEP6
July 20, 2020Effluent Violations - Numeric effluent violationEP6
July 19, 2020Effluent Violations - Numeric effluent violationEP6
July 13, 2020Effluent Violations - Numeric effluent violationEP6
July 10, 2020Effluent Violations - Numeric effluent violationEP6
July 9, 2020Effluent Violations - Numeric effluent violationEP6
May 20, 2020Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
April 9, 2020Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
March 29, 2020Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
February 24, 2020Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
January 21, 2020Permit Violations - Violation Specified in CommentEP6
January 20, 2020Permit Violations - Violation Specified in CommentEP6
January 3, 2020Permit Violations - Violation Specified in CommentEP6
December 6, 2019Permit Violations - Violation Specified in CommentEP6
May 14, 2019Permit Violations - Violation Specified in CommentEP6
May 13, 2019Effluent Violations - Numeric effluent violationEP6
May 12, 2019Effluent Violations - Numeric effluent violationEP6
April 30, 2019Effluent Violations - Numeric effluent violationEP6

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

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