PlainWater
States → Illinois

Community Water System · PWS IL0010700

Ursa

Ursa, Illinois 62376 - drinking water served from groundwater sources to 626 people, tracked in EPA SDWIS and UCMR5.

626
People served
200
EPA violations
6
Health-based
Untested
UCMR5 result

The verdict

EPA records 200 drinking-water violations at Ursa, 3% of them health-based - above the Illinois per-system average.

200
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
626
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Ursa

Ursa is a local-owned community water system that delivers drinking water to 626 residents in Ursa, Illinois (Adams County) through 281 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 200 total violations for this system , of which 6 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 170 monitoring and reporting violations are on file. The most recent violation on record dates to 2010.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 31 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%).

Ursa's 200 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
626
Total Violations
200
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
281
County
Adams
School/Daycare
No
MCL Violations
6
Monitoring Violations
170
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 31 2004
Chlorine MR 14 2008
Nitrate MCL 6 2010
Endrin MR 4 2005
BHC-GAMMA MR 4 2005
Toxaphene MR 4 2005
Dalapon MR 4 2005
Diquat MR 4 2005
Endothall MR 4 2005
OXAMYL MR 4 2005
Simazine MR 4 2005
Dinoseb MR 4 2005
Aldicarb sulfoxide MR 4 2005
Aldicarb sulfone MR 4 2005
Carbofuran MR 4 2005
Aldicarb MR 4 2005
Atrazine MR 4 2005
Heptachlor MR 4 2005
2,4-D MR 4 2005
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2005
Chlordane MR 4 2005
Di(2-ethylhexyl) phthalate MR 4 2005
Heptachlor epoxide MR 4 2005
Pentachlorophenol MR 4 2005
ETHYLENE DIBROMIDE MR 4 2005
Di(2-ethylhexyl) adipate MR 4 2005
Total Polychlorinated Biphenyls (PCB) MR 4 2005
Hexachlorocyclopentadiene MR 4 2005
Picloram MR 4 2005
Methoxychlor MR 4 2005

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 Ursa.

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 IL0010700 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 Ursa 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
2010 Nitrate MCL 6 SDWIS / IL0010700 / 1040
2008 Chlorine MR 14 SDWIS / IL0010700 / 0999
2005 Endrin MR 4 SDWIS / IL0010700 / 2005
2005 BHC-GAMMA MR 4 SDWIS / IL0010700 / 2010
2005 Toxaphene MR 4 SDWIS / IL0010700 / 2020
2005 Dalapon MR 4 SDWIS / IL0010700 / 2031
2005 Diquat MR 4 SDWIS / IL0010700 / 2032
2005 Endothall MR 4 SDWIS / IL0010700 / 2033
2005 OXAMYL MR 4 SDWIS / IL0010700 / 2036
2005 Simazine MR 4 SDWIS / IL0010700 / 2037
2005 Dinoseb MR 4 SDWIS / IL0010700 / 2041
2005 Aldicarb sulfoxide MR 4 SDWIS / IL0010700 / 2043
2005 Aldicarb sulfone MR 4 SDWIS / IL0010700 / 2044
2005 Carbofuran MR 4 SDWIS / IL0010700 / 2046
2005 Aldicarb MR 4 SDWIS / IL0010700 / 2047

How Ursa Compares

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

Metric Ursa Illinois avg Federal benchmark
Total violations 200 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 6 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 626 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 Ursa water safe to drink? ▼
Ursa (PWS ID: IL0010700) has 200 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 626 people using Groundwater sources.
How many people does Ursa serve? ▼
Ursa serves 626 people in Ursa, Illinois. It is a Local-owned system using Groundwater water sources with 281 service connections.
What type of violations does Ursa have? ▼
Ursa has 200 total violations: 6 health-based violations (MCL exceedances or treatment failures), 170 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ursa water? ▼
No PFAS testing data is available for Ursa under the EPA's UCMR5 monitoring program.
What water source does Ursa use? ▼
Ursa 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.