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Community Water System · PWS IA8676027

Toledo Water Supply

Toledo, Iowa 52342 - drinking water served from groundwater sources to 2,399 people, tracked in EPA SDWIS and UCMR5.

2,399
People served
102
EPA violations
29
Health-based
Untested
UCMR5 result

The verdict

EPA records 102 drinking-water violations at Toledo Water Supply, 28% of them health-based - above the Iowa per-system average.

102
Total EPA violations on record
28%
Health-based (MCL / treatment failure)
2,399
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Toledo Water Supply

Toledo Water Supply is a local-owned community water system that delivers drinking water to 2,399 residents in Toledo, Iowa (Tama County) through 960 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 102 total violations for this system , of which 29 (28%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 30 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Combined Radium (-226 and -228), recorded in 29 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Iowa, EPA tracks 1,795 public water systems serving 3,114,444 people, with 138,271 cumulative violations and 27,946 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 77 violations. Statewide, 127 of 152 UCMR5-tested systems have reported PFAS detections (83.6%).

Toledo Water Supply's 102 violations sit above the Iowa average.

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
2,399
Total Violations
102
Health-Based Violations
29
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
960
County
Tama
School/Daycare
No
MCL Violations
29
Monitoring Violations
30
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 29 2015
Combined Radium (-226 and -228) MR 9 2015
Coliform (TCR) MR 7 2001
Arsenic MR 7 2000
Nitrate MR 5 2019
Combined Radium (-226 and -228) Other 5 1986
Public Notice Other 5 2017
Gross Alpha, Excl. Radon and U MR 1 1985
Cadmium MR 1 2003

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 Toledo Water Supply.

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 IA8676027 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Iowa Drinking Water Authority

Iowa'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 IA 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
2019 Nitrate MR 5 SDWIS / IA8676027 / 1040
2017 Public Notice Other 5 SDWIS / IA8676027 / 7500
2015 Combined Radium (-226 and -228) MCL 29 SDWIS / IA8676027 / 4010
2015 Combined Radium (-226 and -228) MR 9 SDWIS / IA8676027 / 4010
2003 Cadmium MR 1 SDWIS / IA8676027 / 1015
2001 Coliform (TCR) MR 7 SDWIS / IA8676027 / 3100
2000 Arsenic MR 7 SDWIS / IA8676027 / 1005
1986 Combined Radium (-226 and -228) Other 5 SDWIS / IA8676027 / 4010
1985 Gross Alpha, Excl. Radon and U MR 1 SDWIS / IA8676027 / 4000

How Toledo Water Supply Compares

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

Metric Toledo Water Supply Iowa avg Federal benchmark
Total violations 102 77 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 29 15.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 83.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,399 1,735 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,795 regulated public water systems in Iowa.

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 Toledo Water Supply water safe to drink? ▼
Toledo Water Supply (PWS ID: IA8676027) has 102 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,399 people using Groundwater sources.
How many people does Toledo Water Supply serve? ▼
Toledo Water Supply serves 2,399 people in Toledo, Iowa. It is a Local-owned system using Groundwater water sources with 960 service connections.
What type of violations does Toledo Water Supply have? ▼
Toledo Water Supply has 102 total violations: 29 health-based violations (MCL exceedances or treatment failures), 30 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Toledo Water Supply water? ▼
No PFAS testing data is available for Toledo Water Supply under the EPA's UCMR5 monitoring program.
What water source does Toledo Water Supply use? ▼
Toledo Water Supply 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.