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Community Water System · PWS IL1410250

Hillcrest

Rochelle, Illinois 61068 - drinking water served from groundwater sources to 1,224 people, tracked in EPA SDWIS and UCMR5.

1,224
People served
225
EPA violations
14
Health-based
Untested
UCMR5 result

The verdict

EPA records 225 drinking-water violations at Hillcrest, 6% of them health-based - above the Illinois per-system average.

225
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
1,224
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hillcrest

Hillcrest is a local-owned community water system that delivers drinking water to 1,224 residents in Rochelle, Illinois (Ogle County) through 445 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 225 total violations for this system , of which 14 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 183 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 Gross Alpha, Excl. Radon and U, recorded in 16 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 Illinois, EPA tracks 5,117 public water systems serving 12,576,876 people, with 355,322 cumulative violations and 52,932 health-based violations on record. About 81% of systems in the state carry at least one violation, and state-wide the average per system is 69.4 violations. Statewide, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%).

Hillcrest's 225 violations sit above the Illinois 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
1,224
Total Violations
225
Health-Based Violations
14
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
445
County
Ogle
School/Daycare
No
MCL Violations
4
Monitoring Violations
183
Treatment Tech Violations
10

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Gross Alpha, Excl. Radon and U MR 16 1982
Lead and Copper Rule TT 10 2008
Lead and Copper Rule MR 8 2025
Coliform (TCR) MR 6 1994
Public Notice Other 4 2024
Endrin MR 4 2020
Methoxychlor MR 4 2020
Toxaphene MR 4 2020
Dalapon MR 4 2020
Di(2-ethylhexyl) adipate MR 4 2020
Picloram MR 4 2020
Aldicarb sulfoxide MR 4 2020
Carbofuran MR 4 2020
Aldicarb MR 4 2020
Atrazine MR 4 2020
LASSO MR 4 2020
Heptachlor MR 4 2020
2,4-D MR 4 2020
2,4,5-TP MR 4 2020
HEXACHLOROBENZENE MR 4 2020
Total Polychlorinated Biphenyls (PCB) MR 4 2020
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2020
ETHYLENE DIBROMIDE MR 4 2020
Pentachlorophenol MR 4 2020
Hexachlorocyclopentadiene MR 4 2020
Aldicarb sulfone MR 4 2020
Diquat MR 4 2020
Di(2-ethylhexyl) phthalate MR 4 2020
BHC-GAMMA MR 4 2020
Dinoseb MR 4 2020

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 Hillcrest.

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 IL1410250 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Illinois Drinking Water Authority

Illinois EPA, Bureau of Water is the primacy agency that licenses and inspects Hillcrest under EPA-delegated authority.

Open IL regulator portal

Source: Illinois EPA, Bureau of Water

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 Lead and Copper Rule MR 8 SDWIS / IL1410250 / 5000
2025 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / IL1410250 / 5200
2024 Public Notice Other 4 SDWIS / IL1410250 / 7500
2024 Revised Total Coliform Rule MON 4 SDWIS / IL1410250 / 8000
2024 Chlorine MR 4 SDWIS / IL1410250 / 0999
2020 Endrin MR 4 SDWIS / IL1410250 / 2005
2020 Methoxychlor MR 4 SDWIS / IL1410250 / 2015
2020 Toxaphene MR 4 SDWIS / IL1410250 / 2020
2020 Dalapon MR 4 SDWIS / IL1410250 / 2031
2020 Di(2-ethylhexyl) adipate MR 4 SDWIS / IL1410250 / 2035
2020 Picloram MR 4 SDWIS / IL1410250 / 2040
2020 Aldicarb sulfoxide MR 4 SDWIS / IL1410250 / 2043
2020 Carbofuran MR 4 SDWIS / IL1410250 / 2046
2020 Aldicarb MR 4 SDWIS / IL1410250 / 2047
2020 Atrazine MR 4 SDWIS / IL1410250 / 2050

How Hillcrest Compares

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

Metric Hillcrest Illinois avg Federal benchmark
Total violations 225 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 14 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,224 2,458 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,117 regulated public water systems in Illinois.

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 Hillcrest water safe to drink? ▼
Hillcrest (PWS ID: IL1410250) has 225 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,224 people using Groundwater sources.
How many people does Hillcrest serve? ▼
Hillcrest serves 1,224 people in Rochelle, Illinois. It is a Local-owned system using Groundwater water sources with 445 service connections.
What type of violations does Hillcrest have? ▼
Hillcrest has 225 total violations: 14 health-based violations (MCL exceedances or treatment failures), 183 monitoring/reporting violations, and 10 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hillcrest water? ▼
No PFAS testing data is available for Hillcrest under the EPA's UCMR5 monitoring program.
What water source does Hillcrest use? ▼
Hillcrest 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.