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Public water system record

Calif State Polytechnical Univ - Pomona

Serves an area of Los Angeles County, CA · 29,854 people served

Federal records show 3 health-based violations and 22 monitoring/reporting issues for Calif State Polytechnical Univ - Pomona in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

  • CA1910022
  • POMONA
  • CA
  • 29,854 served

System profile

Source water Surface water
ZIP 91768
EPA system ID CA1910022

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
2
Unresolved
1
Any acute record
No
Monitoring issues, last 10 years
22

Key facts

  • Calif State Polytechnical Univ - Pomona draws water from 1 well and 1 reservoir.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit), 2017.
  • Most recent formal enforcement: compliance order (no penalty) by California, October 2024.
  • Record on file since 1993, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 149 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
 350 Oct 17, 2024 Active No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jul 1, 2024 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jan 1, 2017 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Active
Styrene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Ethylbenzene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Toluene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Benzene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CHLOROBENZENE
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Tetrachloroethylene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1,2-Trichloroethane
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Trichloroethylene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2-Dichloropropane
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Carbon tetrachloride
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1,1-Trichloroethane
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2-Dichloroethane
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
trans-1,2-Dichloroethylene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1-Dichloroethylene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Vinyl chloride
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
p-Dichlorobenzene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
o-Dichlorobenzene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
DICHLOROMETHANE
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Xylenes, Total
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
cis-1,2-Dichloroethylene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2,4-Trichlorobenzene
Monitoring and reporting
 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.

Full record since 1993

EPA's records for Calif State Polytechnical Univ - Pomona go back to 1993. Before October 19, 2016 they list 2 health-based violations (2 resolved) and no monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 1 0
2010 to October 18, 2016 1 0
October 19, 2016 to 2019 1 0
2020s 2 22

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2011, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0814 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Apr 1, 2011 Resolved
Total Coliform
Contaminant limit exceeded
 Jan 1, 1993 Resolved

Enforcement actions

California regulators took 3 formal enforcement actions against Calif State Polytechnical Univ - Pomona between 2011 and 2024. The most recent was a compliance order (no penalty) in October 2024.

Date By Action Violations covered
Oct 17, 2024 California Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Apr 20, 2017 California Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Apr 28, 2011 California Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

2 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

LEAD AND COPPER RULE REVISIONS

1 incident

The system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Calif State Polytechnical Univ - Pomona draws water from 1 well and 1 reservoir. It also buys water from Metropolitan Water Dist. of So. Cal.

Buys water from

Annual water quality report

Calif State Polytechnical Univ - Pomona 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 California.

Certified drinking water labs by state EPA guidance for private wells