Public water system record
Ithaca City
Serves Ithaca, Tompkins County, NY · 29,457 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Ithaca City in the last ten years. The most serious issue in this window was a resolved Chlorine dioxide violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 2
Key facts
- Ithaca City draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Chlorine dioxide, 1.58 mg/L, federal limit 0.8 mg/L (2 times the limit), 2020.
- Most recent formal enforcement: signed compliance agreement by New York, May 2003.
- Record on file since 1993, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 435 lead and 637 unknown out of 5,496 service lines.
Check whether Ithaca City serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Chlorine dioxide
Disinfectant residual limit exceeded
Measured 1.58 mg/L, federal limit 0.8 mg/L (2 times the limit)
|
210 | Feb 1, 2020 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
Full record since 1993
EPA's records for Ithaca City go back to 1993. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2000s | 4 | 0 |
| 2010 to October 18, 2016 | 1 | 0 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 1 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began July 2016, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jul 1, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 65 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
Apr 1, 2003 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 77 µg/L, federal limit 60 µg/L (1.3 times the limit)
|
Jan 1, 2003 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 78 µg/L, federal limit 60 µg/L (1.3 times the limit)
|
Oct 1, 2002 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jan 1, 2002 | Resolved |
Enforcement actions
New York regulators took 1 formal enforcement action against Ithaca City in 2003. The most recent was a signed compliance agreement in May 2003.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 30, 2003 | New York | Signed compliance agreement | 2 violations (2 health-based): Haloacetic Acids (HAA5) |
What the violations mean
Chlorine dioxide
1 incidentChlorine dioxide levels were above the federal maximum residual disinfectant level.
The utility had to notify customers about this violation.
Where the water comes from
Ithaca City draws water from 1 surface water intake. 2 other community water systems buy water from Ithaca City.
Community systems that buy water from it
- Cayuga Heights Village Ithaca, NY
- Ithaca Town WD Ithaca, NY
Annual water quality report
Ithaca City must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by New York.
Certified drinking water labs by state EPA guidance for private wells