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SUMNER WATER SUPPLY

PWS ID: IA0970006 · SUMNER, Iowa 50674

SUMNER WATER SUPPLY serves 2,030 people in SUMNER, Iowa using Groundwater water sources. It has 156 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SUMNER WATER SUPPLY

SUMNER WATER SUPPLY is a local-owned community water system that delivers drinking water to 2,030 residents in SUMNER, Iowa (Bremer County) through 900 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 156 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 156 monitoring and reporting violations are on file. The most recent violation on record dates to 2008.

The most frequently cited contaminant at this system is Nitrate, recorded in 12 violations (MR). 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. SUMNER WATER SUPPLY's 156 violations sit above the Iowa average. Statewide, 127 of 152 UCMR5-tested systems have reported PFAS detections (83.6%). 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
2,030
Total Violations
156
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
900
County
Bremer
School/Daycare
No
MCL Violations
0
Monitoring Violations
156
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 12 2008
Total Haloacetic Acids (HAA5) MR 4 2008
o-Dichlorobenzene MR 4 2003
p-Dichlorobenzene MR 4 2003
Vinyl chloride MR 4 2003
trans-1,2-Dichloroethylene MR 4 2003
1,2-Dichloroethane MR 4 2003
Carbon tetrachloride MR 4 2003
1,1,2-Trichloroethane MR 4 2003
CHLOROBENZENE MR 4 2003
1,2,4-Trichlorobenzene MR 4 2003
Xylenes, Total MR 4 2003
Simazine MR 4 2003
Picloram MR 4 2003
Dinoseb MR 4 2003
2,4-D MR 4 2003
2,4,5-TP MR 4 2003
Benzo(a)pyrene MR 4 2003
Coliform (TCR) MR 4 2006
1,1,1-Trichloroethane MR 4 2003
1,1-Dichloroethylene MR 4 2003
Di(2-ethylhexyl) adipate MR 4 2003
Di(2-ethylhexyl) phthalate MR 4 2003
Toluene MR 4 2003
Ethylbenzene MR 4 2003
Trichloroethylene MR 4 2003
DICHLOROMETHANE MR 4 2003
Pentachlorophenol MR 4 2003
Atrazine MR 4 2003
Styrene MR 4 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 SUMNER 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 IA0970006 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
2008 Nitrate MR 12 SDWIS / IA0970006 / 1040
2008 Total Haloacetic Acids (HAA5) MR 4 SDWIS / IA0970006 / 2456
2008 TTHM MR 4 SDWIS / IA0970006 / 2950
2006 Coliform (TCR) MR 4 SDWIS / IA0970006 / 3100
2003 o-Dichlorobenzene MR 4 SDWIS / IA0970006 / 2968
2003 p-Dichlorobenzene MR 4 SDWIS / IA0970006 / 2969
2003 Vinyl chloride MR 4 SDWIS / IA0970006 / 2976
2003 trans-1,2-Dichloroethylene MR 4 SDWIS / IA0970006 / 2979
2003 1,2-Dichloroethane MR 4 SDWIS / IA0970006 / 2980
2003 Carbon tetrachloride MR 4 SDWIS / IA0970006 / 2982
2003 1,1,2-Trichloroethane MR 4 SDWIS / IA0970006 / 2985
2003 CHLOROBENZENE MR 4 SDWIS / IA0970006 / 2989
2003 1,2,4-Trichlorobenzene MR 4 SDWIS / IA0970006 / 2378
2003 Xylenes, Total MR 4 SDWIS / IA0970006 / 2955
2003 Simazine MR 4 SDWIS / IA0970006 / 2037

How SUMNER WATER SUPPLY Compares

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

Metric SUMNER WATER SUPPLY Iowa avg Federal benchmark
Total violations 156 77 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 2,030 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is SUMNER WATER SUPPLY water safe to drink? ▼
SUMNER WATER SUPPLY (PWS ID: IA0970006) has 156 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,030 people using Groundwater sources.
How many people does SUMNER WATER SUPPLY serve? ▼
SUMNER WATER SUPPLY serves 2,030 people in SUMNER, Iowa. It is a Local-owned system using Groundwater water sources with 900 service connections.
What type of violations does SUMNER WATER SUPPLY have? ▼
SUMNER WATER SUPPLY has 156 total violations: 0 health-based violations (MCL exceedances or treatment failures), 156 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in SUMNER WATER SUPPLY water? ▼
No PFAS testing data is available for SUMNER WATER SUPPLY under the EPA's UCMR5 monitoring program.
What water source does SUMNER WATER SUPPLY use? ▼
SUMNER 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.

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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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