OTTAWA
PWSID: IL0990800 · Ottawa, IL · Serves 18,097 people
According to EPA Safe Drinking Water Information System (SDWIS), OTTAWA (PWSID IL0990800) in Ottawa, IL is listed as a CWS water system covering about 18,097 people. The same extract lists 7 health-based violation records spanning 1992-2023. Those 7 health-based rows for OTTAWA cover contaminants such as Combined Radium (-226 and -228), Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
OTTAWA has 7 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 2 distinct EPA contaminant codes appear in this system's record, including Combined Radium (-226 and -228), Lead and Copper Rule. Recorded violations span 1992–2023. Day-to-day primacy enforcement for this system runs through the Illinois drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Illinois state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- IL0990800
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Ottawa, IL
- Population Served
- 18,097
- Health Violations
- Yes (7)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Combined Radium (-226 and -228) | 6 | 6 |
| Lead and Copper Rule | 1 | 1 |
Violation History (7)
| Contaminant | Health | Date |
|---|---|---|
| Combined Radium (-226 and -228) | Yes | Jul 1, 2023 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2023 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2023 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2023 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2023 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2023 |
| Lead and Copper Rule | Yes | Dec 7, 1992 |
Frequently Asked Questions
What does EPA SDWIS list for OTTAWA?
How many people does OTTAWA serve?
What violations does OTTAWA have?
What contaminants have been found in OTTAWA water?
Compare beyond Illinois
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest OTTAWA on cumulative violation count (7) and EPA-reported population served (18,097). Violation-count peers include SANTEE UTILITY COMMISSION, CHEFORNAK WATER SYSTEM, LYNN WATER WORKS. Population peers include CITY OF LAUREL, CITY OF BELLAIRE, BASTROP WATER SYSTEM.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
OTTAWA (IL0990800) is drawn from EPA SDWIS. Nearby county systems in this extract include PERU; LA SALLE; MENDOTA; OGLESBY. Health-based rows (7 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.