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THE RINCON WATER COOPERATIVE

PWS ID: NM3562101 · LITTLETON, New Mexico 80120

THE RINCON WATER COOPERATIVE serves 276 people in LITTLETON, New Mexico using Groundwater water sources. It has 430 recorded EPA violations, including 4 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: THE RINCON WATER COOPERATIVE

THE RINCON WATER COOPERATIVE is a local-owned community water system that delivers drinking water to 276 residents in LITTLETON, New Mexico (Bernalillo County) through 90 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 430 total violations for this system , of which 4 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 399 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 19 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across New Mexico, EPA tracks 1,037 public water systems serving 2,027,497 people, with 154,522 cumulative violations and 38,650 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 149 violations. THE RINCON WATER COOPERATIVE's 430 violations sit above the New Mexico average. Statewide, 70 of 72 UCMR5-tested systems have reported PFAS detections (97.2%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
276
Total Violations
430
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
90
County
Bernalillo
School/Daycare
No
MCL Violations
4
Monitoring Violations
399
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 19 2023
LASSO MR 13 1995
Heptachlor epoxide MR 13 1995
2,4-D MR 13 1995
BHC-GAMMA MR 13 1995
Dalapon MR 13 1995
Diquat MR 13 1995
Glyphosate MR 13 1995
Simazine MR 13 1995
Methoxychlor MR 13 1995
Pentachlorophenol MR 13 1995
Chlordane MR 13 1995
2,4,5-TP MR 13 1995
Dinoseb MR 13 1995
Heptachlor MR 13 1995
OXAMYL MR 13 1995
Atrazine MR 13 1995
Benzo(a)pyrene MR 13 1995
1,2-DIBROMO-3-CHLOROPROPANE MR 13 1995
Picloram MR 13 1995
Endrin MR 13 1995
Toxaphene MR 13 1995
HEXACHLOROBENZENE MR 13 1995
Total Polychlorinated Biphenyls (PCB) MR 13 1995
ETHYLENE DIBROMIDE MR 13 1995
Di(2-ethylhexyl) phthalate MR 13 1995
Carbofuran MR 13 1995
Di(2-ethylhexyl) adipate MR 13 1995
Endothall MR 13 1995
Hexachlorocyclopentadiene MR 13 1995

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for THE RINCON WATER COOPERATIVE.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NM3562101 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New Mexico Drinking Water Authority

New Mexico's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find NM regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2023 Consumer Confidence Rule Other 19 SDWIS / NM3562101 / 7000
2020 Public Notice Other 3 SDWIS / NM3562101 / 7500
2017 E. COLI MR 3 SDWIS / NM3562101 / 3014
2016 Chlorine MR 8 SDWIS / NM3562101 / 0999
2016 Lead and Copper Rule MR 4 SDWIS / NM3562101 / 5000
2014 TTHM MR 3 SDWIS / NM3562101 / 2950
2002 Coliform (TCR) MCL 4 SDWIS / NM3562101 / 3100
2001 Coliform (TCR) MR 4 SDWIS / NM3562101 / 3100
1995 LASSO MR 13 SDWIS / NM3562101 / 2051
1995 Heptachlor epoxide MR 13 SDWIS / NM3562101 / 2067
1995 2,4-D MR 13 SDWIS / NM3562101 / 2105
1995 BHC-GAMMA MR 13 SDWIS / NM3562101 / 2010
1995 Dalapon MR 13 SDWIS / NM3562101 / 2031
1995 Diquat MR 13 SDWIS / NM3562101 / 2032
1995 Glyphosate MR 13 SDWIS / NM3562101 / 2034

How THE RINCON WATER COOPERATIVE Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric THE RINCON WATER COOPERATIVE New Mexico avg Federal benchmark
Total violations 430 149 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 4 37.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 97.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 276 1,955 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,037 regulated public water systems in New Mexico.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is THE RINCON WATER COOPERATIVE water safe to drink? ▼
THE RINCON WATER COOPERATIVE (PWS ID: NM3562101) has 430 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 276 people using Groundwater sources.
How many people does THE RINCON WATER COOPERATIVE serve? ▼
THE RINCON WATER COOPERATIVE serves 276 people in LITTLETON, New Mexico. It is a Local-owned system using Groundwater water sources with 90 service connections.
What type of violations does THE RINCON WATER COOPERATIVE have? ▼
THE RINCON WATER COOPERATIVE has 430 total violations: 4 health-based violations (MCL exceedances or treatment failures), 399 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in THE RINCON WATER COOPERATIVE water? ▼
No PFAS testing data is available for THE RINCON WATER COOPERATIVE under the EPA's UCMR5 monitoring program.
What water source does THE RINCON WATER COOPERATIVE use? ▼
THE RINCON WATER COOPERATIVE uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial