Public water system · IL0010700

Active

Ursa

At a glance

Ursa (PWSID IL0010700) is an active community water system in Adams County, Illinois. It reports serving 626 people through 281 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2010.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

626

Service connections

281

Primary source

GWP

Purchased groundwater

System type

CWS

Community water system

System record

PWSIDIL0010700

System typeCommunity water system

Activity statusActive

Population served626

Service connections281

Primary water sourcePurchased groundwater

Owner typeLocal government

Primacy agencyIL state drinking water program

City servedUrsa

StateIllinois

ZIP—

CountyAdams County

How does Ursa compare with other water systems in Adams County?

By EPA's size categories, Ursa is a small system (501 to 3,300 people). Adams County has 22 active public water systems. Its population served is well below the county average of 3,086 people per system, and accounts for 0.9% of the 67,881 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active community water system reports serving 6,703 people, so Ursa is well below that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Illinois has 1,773 active community water systems, 46% of the state's 3,872 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 348 Illinois systems (9%) list purchased groundwater as their primary source.

Who owns and regulates Ursa?

EPA lists Ursa as owned by a local government. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 15 of the 22 active systems in Adams County (68%) are also owned by a local government.

Does Ursa have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2010. The violations listed here began between October 2005 and April 2010. By type: 11 monitoring and reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are Nitrate, Chlorine, Toxaphene and Diquat. EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.

Began	Violation	Contaminant or rule	Health-based	Status
2010-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
2008-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	Toxaphenecode 2020	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	Diquatcode 2032	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	Endothallcode 2033	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	Atrazinecode 2050	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	2,4-Dcode 2105	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	Heptachlorcode 2065	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dibromo-3-chloropropane (DBCP)code 2931	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	Chlordanecode 2959	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	Endrincode 2005	No	Resolved
2005-10-01	Monitoring and reportingMonitoring, Regular · code 03	Lindane (gamma-BHC)code 2010	No	Resolved

The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Ursa: frequently asked questions

Who runs Ursa?

Ursa (PWSID IL0010700) is a community water system owned by a local government. It is regulated by the IL state drinking water program.

How many people does Ursa serve?

Ursa reports serving 626 people through 281 service connections in Adams County, Illinois.

Where does Ursa get its water?

EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.

Does Ursa have any drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2010. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Ursa's water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.

Where can I find Ursa's water quality report?

As a community water system, Ursa must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Adams County

Water system	County	Population served	Type	Source
Quincy	Adams	42,000	Community	Surface water
Abs Water Coop	Adams	6,858	Community	Purchased groundwater
Mill Creek PWD	Adams	5,755	Community	Groundwater
Clayton-Camp Point Water Commission	Adams	2,470	Community	Groundwater
Blessing Hospital	Adams	2,460	Non-transient non-community	Purchased surface water
Payson	Adams	1,386	Community	Groundwater

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About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Ursa, PWSID IL0010700, Illinois”, https://aquacensus.com/water-systems/illinois/ursa-il0010700 (data as of October 1, 2026).