PlainWater
States → EPA Region 9 — Tribal Water Systems

Community Water System · PWS 090600126

Cold Springs Main

Tollhouse, EPA Region 9 — Tribal Water Systems 93667 - drinking water served from groundwater sources to 209 people, tracked in EPA SDWIS and UCMR5.

209
People served
219
EPA violations
13
Health-based
Untested
UCMR5 result

The verdict

EPA records 219 drinking-water violations at Cold Springs Main, 6% of them health-based.

219
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
209
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cold Springs Main

Cold Springs Main is a native american-owned community water system that delivers drinking water to 209 residents in Tollhouse, EPA Region 9 — Tribal Water Systems through 43 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 219 total violations for this system , of which 13 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 52 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 20 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 9 — 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
209
Total Violations
219
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
43
School/Daycare
No
MCL Violations
11
Monitoring Violations
52
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 20 2010
Coliform (TCR) MCL 11 2010
Consumer Confidence Rule Other 7 2021
E. COLI MR 6 2024
Revised Total Coliform Rule MON 6 2025
Public Notice Other 6 2025
Chlorine MR 5 2025
Nitrate MR 4 2020
Lead and Copper Rule MR 3 1999
Groundwater Rule TT 2 2023
Arsenic MR 1 2009
Total Haloacetic Acids (HAA5) MR 1 2022
1,1,1-Trichloroethane MR 1 2005
TTHM MR 1 2022
Carbofuran MR 1 1996
2,4-D MR 1 1996
2,4,5-TP MR 1 1996
Pentachlorophenol MR 1 1996

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 Cold Springs Main.

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 090600126 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 9 — Tribal Water Systems Drinking Water Authority

EPA Region 9 — 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 09 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
2025 Revised Total Coliform Rule MON 6 SDWIS / 090600126 / 8000
2025 Public Notice Other 6 SDWIS / 090600126 / 7500
2025 Chlorine MR 5 SDWIS / 090600126 / 0999
2024 E. COLI MR 6 SDWIS / 090600126 / 3014
2023 Groundwater Rule TT 2 SDWIS / 090600126 / 0700
2022 Total Haloacetic Acids (HAA5) MR 1 SDWIS / 090600126 / 2456
2022 TTHM MR 1 SDWIS / 090600126 / 2950
2021 Consumer Confidence Rule Other 7 SDWIS / 090600126 / 7000
2020 Nitrate MR 4 SDWIS / 090600126 / 1040
2010 Coliform (TCR) MR 20 SDWIS / 090600126 / 3100
2010 Coliform (TCR) MCL 11 SDWIS / 090600126 / 3100
2009 Arsenic MR 1 SDWIS / 090600126 / 1005
2005 1,1,1-Trichloroethane MR 1 SDWIS / 090600126 / 2981
1999 Lead and Copper Rule MR 3 SDWIS / 090600126 / 5000
1996 Carbofuran MR 1 SDWIS / 090600126 / 2046

How Cold Springs Main Compares

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

Metric Cold Springs Main EPA Region 9 — Tribal Water Systems avg Federal benchmark
Total violations 219 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 13 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 209 - 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 9 — 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 Cold Springs Main water safe to drink? ▼
Cold Springs Main (PWS ID: 090600126) has 219 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 209 people using Groundwater sources.
How many people does Cold Springs Main serve? ▼
Cold Springs Main serves 209 people in Tollhouse, EPA Region 9 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 43 service connections.
What type of violations does Cold Springs Main have? ▼
Cold Springs Main has 219 total violations: 13 health-based violations (MCL exceedances or treatment failures), 52 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Cold Springs Main water? ▼
No PFAS testing data is available for Cold Springs Main under the EPA's UCMR5 monitoring program.
What water source does Cold Springs Main use? ▼
Cold Springs Main 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.
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.