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CRESCO WATERWORKS

PWS ID: IA4515087 · CRESCO, Iowa 52136

CRESCO WATERWORKS serves 3,913 people in CRESCO, Iowa using Groundwater water sources. It has 178 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CRESCO WATERWORKS

CRESCO WATERWORKS is a local-owned community water system that delivers drinking water to 3,913 residents in CRESCO, Iowa (Howard County) through 1,900 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 178 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 97 monitoring and reporting violations are on file. The most recent violation on record dates to 2005.

The most frequently cited contaminant at this system is o-Dichlorobenzene, recorded in 8 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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. CRESCO WATERWORKS's 178 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
3,913
Total Violations
178
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,900
County
Howard
School/Daycare
No
MCL Violations
0
Monitoring Violations
97
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
o-Dichlorobenzene MR 8 1992
Xylenes, Total MR 8 1992
1,1,2-Trichloroethane MR 8 1992
Toluene MR 8 1992
Ethylbenzene MR 8 1992
Chlorine MR 8 2005
CHLOROBENZENE MR 8 1992
DICHLOROMETHANE MR 8 1992
1,2-Dichloropropane MR 8 1992
cis-1,2-Dichloroethylene MR 8 1992
Styrene MR 8 1992
trans-1,2-Dichloroethylene MR 8 1992
Lead and Copper Rule MR 1 1992

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFTrDA 7/22/2024 <0.007 µg/L 0.007 µg/L Not Detected
NFDHA 7/22/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFMBA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 7/22/2024 <0.008 µg/L 0.008 µg/L Not Detected
HFPO-DA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/22/2024 <0.006 µg/L 0.006 µg/L Not Detected
lithium 7/22/2024 <9 µg/L 9 µg/L Not Detected
PFDA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 7/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 7/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 7/22/2024 <0.006 µg/L 0.006 µg/L Not Detected
lithium 7/22/2024 <9 µg/L 9 µg/L Not Detected
PFTrDA 7/22/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 7/22/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected

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 CRESCO WATERWORKS.

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 IA4515087 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
2005 Chlorine MR 8 SDWIS / IA4515087 / 0999
1992 o-Dichlorobenzene MR 8 SDWIS / IA4515087 / 2968
1992 Xylenes, Total MR 8 SDWIS / IA4515087 / 2955
1992 1,1,2-Trichloroethane MR 8 SDWIS / IA4515087 / 2985
1992 Toluene MR 8 SDWIS / IA4515087 / 2991
1992 Ethylbenzene MR 8 SDWIS / IA4515087 / 2992
1992 CHLOROBENZENE MR 8 SDWIS / IA4515087 / 2989
1992 DICHLOROMETHANE MR 8 SDWIS / IA4515087 / 2964
1992 1,2-Dichloropropane MR 8 SDWIS / IA4515087 / 2983
1992 cis-1,2-Dichloroethylene MR 8 SDWIS / IA4515087 / 2380
1992 Styrene MR 8 SDWIS / IA4515087 / 2996
1992 trans-1,2-Dichloroethylene MR 8 SDWIS / IA4515087 / 2979
1992 Lead and Copper Rule MR 1 SDWIS / IA4515087 / 5000

How CRESCO WATERWORKS Compares

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

Metric CRESCO WATERWORKS Iowa avg Federal benchmark
Total violations 178 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 3,913 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 CRESCO WATERWORKS water safe to drink? ▼
CRESCO WATERWORKS (PWS ID: IA4515087) has 178 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,913 people using Groundwater sources.
How many people does CRESCO WATERWORKS serve? ▼
CRESCO WATERWORKS serves 3,913 people in CRESCO, Iowa. It is a Local-owned system using Groundwater water sources with 1,900 service connections.
What type of violations does CRESCO WATERWORKS have? ▼
CRESCO WATERWORKS has 178 total violations: 0 health-based violations (MCL exceedances or treatment failures), 97 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CRESCO WATERWORKS water? ▼
No. CRESCO WATERWORKS was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does CRESCO WATERWORKS use? ▼
CRESCO WATERWORKS 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial