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States → EPA Region 8 — Tribal Water Systems

Community Water System · PWS 083890003

Twin Buttes Water Plant

New Town, EPA Region 8 — Tribal Water Systems 58763 - drinking water served from surface water sources to 621 people, tracked in EPA SDWIS and UCMR5.

621
People served
117
EPA violations
15
Health-based
Untested
UCMR5 result

The verdict

EPA records 117 drinking-water violations at Twin Buttes Water Plant, 13% of them health-based.

117
Total EPA violations on record
13%
Health-based (MCL / treatment failure)
621
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Twin Buttes Water Plant

Twin Buttes Water Plant is a federal-owned community water system that delivers drinking water to 621 residents in New Town, EPA Region 8 — Tribal Water Systems through 207 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 117 total violations for this system , of which 15 (13%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 96 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 34 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 8 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

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
621
Total Violations
117
Health-Based Violations
15
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Federal
Connections
207
School/Daycare
No
MCL Violations
12
Monitoring Violations
96
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 34 2013
TTHM MCL 12 2021
Mercury MR 4 1996
Arsenic MR 4 1996
Cadmium MR 4 1996
Chromium MR 4 1996
Nitrate MR 4 1999
Barium MR 4 1996
Selenium MR 4 1996
Lead and Copper Rule MR 3 2010
Combined Uranium MR 3 2021
Radium-226 MR 3 2021
Combined Radium (-226 and -228) MR 3 2021
Gross Alpha, Excl. Radon and U MR 3 2021
Radium-228 MR 3 2021
Fluoride MR 3 1986
Surface Water Treatment Rule TT 3 1995
Thallium, Total MR 2 1999
CYANIDE MR 2 1999
Antimony, Total MR 2 1999
Beryllium, Total MR 2 1999
Total Haloacetic Acids (HAA5) MR 1 2015
Nickel MR 1 1999
2,4,5-TP MR 1 1983
Surface Water Treatment Rule MR 1 1998
TTHM MR 1 2015

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 Twin Buttes Water Plant.

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 083890003 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 8 — Tribal Water Systems Drinking Water Authority

EPA Region 8 — Tribal Water Systems'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 08 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
2021 TTHM MCL 12 SDWIS / 083890003 / 2950
2021 Combined Uranium MR 3 SDWIS / 083890003 / 4006
2021 Radium-226 MR 3 SDWIS / 083890003 / 4020
2021 Combined Radium (-226 and -228) MR 3 SDWIS / 083890003 / 4010
2021 Gross Alpha, Excl. Radon and U MR 3 SDWIS / 083890003 / 4000
2021 Radium-228 MR 3 SDWIS / 083890003 / 4030
2015 Total Haloacetic Acids (HAA5) MR 1 SDWIS / 083890003 / 2456
2015 TTHM MR 1 SDWIS / 083890003 / 2950
2013 Coliform (TCR) MR 34 SDWIS / 083890003 / 3100
2010 Lead and Copper Rule MR 3 SDWIS / 083890003 / 5000
1999 Nitrate MR 4 SDWIS / 083890003 / 1040
1999 Thallium, Total MR 2 SDWIS / 083890003 / 1085
1999 CYANIDE MR 2 SDWIS / 083890003 / 1024
1999 Antimony, Total MR 2 SDWIS / 083890003 / 1074
1999 Beryllium, Total MR 2 SDWIS / 083890003 / 1075

How Twin Buttes Water Plant Compares

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

Metric Twin Buttes Water Plant EPA Region 8 — Tribal Water Systems avg Federal benchmark
Total violations 117 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 621 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 8 — Tribal Water Systems.

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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Twin Buttes Water Plant water safe to drink? ▼
Twin Buttes Water Plant (PWS ID: 083890003) has 117 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 621 people using Surface Water sources.
How many people does Twin Buttes Water Plant serve? ▼
Twin Buttes Water Plant serves 621 people in New Town, EPA Region 8 — Tribal Water Systems. It is a Federal-owned system using Surface Water water sources with 207 service connections.
What type of violations does Twin Buttes Water Plant have? ▼
Twin Buttes Water Plant has 117 total violations: 15 health-based violations (MCL exceedances or treatment failures), 96 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Twin Buttes Water Plant water? ▼
No PFAS testing data is available for Twin Buttes Water Plant under the EPA's UCMR5 monitoring program.
What water source does Twin Buttes Water Plant use? ▼
Twin Buttes Water Plant uses Surface Water 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.
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.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.