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States → EPA Region 8 — Tribal Water Systems

Non-Transient Non-Community Water System · PWS 084990009

Bonanza Water System

Bonanza, EPA Region 8 — Tribal Water Systems 84008 - drinking water served from groundwater sources to 81 people, tracked in EPA SDWIS and UCMR5.

81
People served
36
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 36 drinking-water violations at Bonanza Water System.

36
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
81
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Bonanza Water System

Bonanza Water System is a private-owned non-transient non-community water system that delivers drinking water to 81 residents in Bonanza, EPA Region 8 — Tribal Water Systems through 4 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 36 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 35 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 Revised Total Coliform Rule, recorded in 4 violations (MON). 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
81
Total Violations
36
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
4
School/Daycare
No
MCL Violations
0
Monitoring Violations
35
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 4 2023
Chlorine MR 3 2010
Coliform (TCR) MR 3 2010
Nitrate MR 2 2009
TTHM MR 2 2021
Total Haloacetic Acids (HAA5) MR 2 2021
Simazine MR 1 2020
Pentachlorophenol MR 1 2020
Atrazine MR 1 2020
Di(2-ethylhexyl) adipate MR 1 2020
Total Polychlorinated Biphenyls (PCB) MR 1 2020
Dalapon MR 1 2020
HEXACHLOROBENZENE MR 1 2020
Di(2-ethylhexyl) phthalate MR 1 2020
Benzo(a)pyrene MR 1 2020
LASSO MR 1 2020
Carbofuran MR 1 2020
Chlordane MR 1 2020
Toxaphene MR 1 2020
OXAMYL MR 1 2020
2,4,5-TP MR 1 2020
Picloram MR 1 2020
Hexachlorocyclopentadiene MR 1 2020
2,4-D MR 1 2020
Dinoseb MR 1 2020

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 Bonanza Water System.

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 084990009 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
2023 Revised Total Coliform Rule MON 4 SDWIS / 084990009 / 8000
2021 TTHM MR 2 SDWIS / 084990009 / 2950
2021 Total Haloacetic Acids (HAA5) MR 2 SDWIS / 084990009 / 2456
2020 Simazine MR 1 SDWIS / 084990009 / 2037
2020 Pentachlorophenol MR 1 SDWIS / 084990009 / 2326
2020 Atrazine MR 1 SDWIS / 084990009 / 2050
2020 Di(2-ethylhexyl) adipate MR 1 SDWIS / 084990009 / 2035
2020 Total Polychlorinated Biphenyls (PCB) MR 1 SDWIS / 084990009 / 2383
2020 Dalapon MR 1 SDWIS / 084990009 / 2031
2020 HEXACHLOROBENZENE MR 1 SDWIS / 084990009 / 2274
2020 Di(2-ethylhexyl) phthalate MR 1 SDWIS / 084990009 / 2039
2020 Benzo(a)pyrene MR 1 SDWIS / 084990009 / 2306
2020 LASSO MR 1 SDWIS / 084990009 / 2051
2020 Carbofuran MR 1 SDWIS / 084990009 / 2046
2020 Chlordane MR 1 SDWIS / 084990009 / 2959

How Bonanza Water System Compares

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

Metric Bonanza Water System EPA Region 8 — Tribal Water Systems avg Federal benchmark
Total violations 36 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 81 - 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 Bonanza Water System water safe to drink? ▼
Bonanza Water System (PWS ID: 084990009) has 36 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 81 people using Groundwater sources.
How many people does Bonanza Water System serve? ▼
Bonanza Water System serves 81 people in Bonanza, EPA Region 8 — Tribal Water Systems. It is a Private-owned system using Groundwater water sources with 4 service connections.
What type of violations does Bonanza Water System have? ▼
Bonanza Water System has 36 total violations: 0 health-based violations (MCL exceedances or treatment failures), 35 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Bonanza Water System water? ▼
No PFAS testing data is available for Bonanza Water System under the EPA's UCMR5 monitoring program.
What water source does Bonanza Water System use? ▼
Bonanza Water System uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.