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CASTANA MUNICIPAL WATER SUPPLY

PWS ID: IA6715083 · CASTANA, Iowa 51010

CASTANA MUNICIPAL WATER SUPPLY serves 103 people in CASTANA, Iowa using Groundwater water sources. It has 332 recorded EPA violations, including 46 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CASTANA MUNICIPAL WATER SUPPLY

CASTANA MUNICIPAL WATER SUPPLY is a local-owned community water system that delivers drinking water to 103 residents in CASTANA, Iowa (Monona County) through 85 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 332 total violations for this system , of which 46 (14%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 221 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 Nitrate, recorded in 49 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. CASTANA MUNICIPAL WATER SUPPLY's 332 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
103
Total Violations
332
Health-Based Violations
46
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
85
County
Monona
School/Daycare
No
MCL Violations
46
Monitoring Violations
221
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 49 2020
Coliform (TCR) MR 34 2015
Nitrate MCL 30 2007
Carbon tetrachloride MR 29 1995
Revised Total Coliform Rule MON 21 2020
E. COLI MR 16 2020
Coliform (TCR) MCL 16 2013
Gross Alpha, Excl. Radon and U MR 8 1988
Consumer Confidence Rule Other 6 2021
Lead and Copper Rule MR 5 2017
Public Notice Other 5 2018
2,4-D MR 4 2013
Di(2-ethylhexyl) adipate MR 4 2013
Dinoseb MR 4 2013
Picloram MR 4 2013
Simazine MR 4 2013
Dalapon MR 4 2013
Atrazine MR 4 2013
Di(2-ethylhexyl) phthalate MR 4 2013
TTHM MR 4 2020
2,4,5-TP MR 4 2013
LASSO MR 4 2013
Pentachlorophenol MR 4 2013
Total Haloacetic Acids (HAA5) MR 4 2020
Benzo(a)pyrene MR 4 2013
Arsenic MR 3 2002

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 CASTANA MUNICIPAL 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 IA6715083 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
2021 Consumer Confidence Rule Other 6 SDWIS / IA6715083 / 7000
2020 Nitrate MR 49 SDWIS / IA6715083 / 1040
2020 Revised Total Coliform Rule MON 21 SDWIS / IA6715083 / 8000
2020 E. COLI MR 16 SDWIS / IA6715083 / 3014
2020 TTHM MR 4 SDWIS / IA6715083 / 2950
2020 Total Haloacetic Acids (HAA5) MR 4 SDWIS / IA6715083 / 2456
2018 Public Notice Other 5 SDWIS / IA6715083 / 7500
2017 Lead and Copper Rule MR 5 SDWIS / IA6715083 / 5000
2015 Coliform (TCR) MR 34 SDWIS / IA6715083 / 3100
2013 Coliform (TCR) MCL 16 SDWIS / IA6715083 / 3100
2013 2,4-D MR 4 SDWIS / IA6715083 / 2105
2013 Di(2-ethylhexyl) adipate MR 4 SDWIS / IA6715083 / 2035
2013 Dinoseb MR 4 SDWIS / IA6715083 / 2041
2013 Picloram MR 4 SDWIS / IA6715083 / 2040
2013 Simazine MR 4 SDWIS / IA6715083 / 2037

How CASTANA MUNICIPAL WATER SUPPLY Compares

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

Metric CASTANA MUNICIPAL WATER SUPPLY Iowa avg Federal benchmark
Total violations 332 77 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 46 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 103 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 CASTANA MUNICIPAL WATER SUPPLY water safe to drink? ▼
CASTANA MUNICIPAL WATER SUPPLY (PWS ID: IA6715083) has 332 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 103 people using Groundwater sources.
How many people does CASTANA MUNICIPAL WATER SUPPLY serve? ▼
CASTANA MUNICIPAL WATER SUPPLY serves 103 people in CASTANA, Iowa. It is a Local-owned system using Groundwater water sources with 85 service connections.
What type of violations does CASTANA MUNICIPAL WATER SUPPLY have? ▼
CASTANA MUNICIPAL WATER SUPPLY has 332 total violations: 46 health-based violations (MCL exceedances or treatment failures), 221 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CASTANA MUNICIPAL WATER SUPPLY water? ▼
No PFAS testing data is available for CASTANA MUNICIPAL WATER SUPPLY under the EPA's UCMR5 monitoring program.
What water source does CASTANA MUNICIPAL WATER SUPPLY use? ▼
CASTANA MUNICIPAL 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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