Public water system record

Hilltop Improvement District

Serves an area of Lane County, OR · 45 people served

Federal records show no health-based violations and 2 monitoring/reporting issues for Hilltop Improvement District in the last ten years.

  • OR4100237
  • COTTAGE GROVE
  • OR
  • 45 served

System profile

Source water Groundwater
ZIP 97424
EPA system ID OR4100237

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
2

Key facts

  • Hilltop Improvement District draws water from 1 well.
  • Most recent formal enforcement: compliance order (no penalty) by Oregon, July 2009.
  • Record on file since 1976, with 27 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 22 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.

None since October 2016.

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
Monitoring and reporting
Oct 1, 2023 Resolved
Consumer Confidence Rule
OTHER
Oct 1, 2023 Resolved

Full record since 1976

EPA's records for Hilltop Improvement District go back to 1976. Before October 19, 2016 they list 27 health-based violations (26 resolved, 1 archived by EPA without a recorded fix) and 124 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 0 2
1990s 9 100
2000s 14 20
2010 to October 18, 2016 4 2
2020s 0 2

Most recent health-based violation before October 19, 2016: Arsenic, began October 2010, Resolved.

Show all 27 health-based violations before October 19, 2016
Contaminant Start date Status
Arsenic
Contaminant limit exceeded
Measured 0.018 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
Oct 1, 2010 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
Jul 1, 2010 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.019 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
Apr 1, 2010 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.019 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
Jan 1, 2010 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.018 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
Oct 1, 2009 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.018 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
Jul 1, 2009 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
Apr 1, 2009 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
Jan 1, 2009 Resolved
Total Coliform
Contaminant limit exceeded
Jan 1, 2009 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
Oct 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2008 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.016 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
Jul 1, 2008 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.02 mg/L, federal limit 0.01 mg/L (2 times the limit)
Apr 1, 2008 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.02 mg/L, federal limit 0.01 mg/L (2 times the limit)
Jan 1, 2008 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.02 mg/L, federal limit 0.01 mg/L (2 times the limit)
Oct 1, 2007 Resolved
Total Coliform (acute)
Contaminant limit exceeded
Jan 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Nov 1, 1999 Resolved
Total Coliform
Contaminant limit exceeded
Dec 1, 1998 Resolved
Total Coliform
Contaminant limit exceeded
Apr 1, 1998 Resolved
Total Coliform (acute)
Contaminant limit exceeded
Apr 1, 1998 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 1996 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 1996 Resolved
Total Coliform
Contaminant limit exceeded
Jan 1, 1995 Resolved
Total Coliform
Contaminant limit exceeded
Oct 1, 1992 Archived
Total Coliform
Contaminant limit exceeded
Oct 1, 1992 Resolved

Enforcement actions

Oregon regulators took 3 formal enforcement actions against Hilltop Improvement District between 1997 and 2009. The most recent was a compliance order (no penalty) in July 2009.

Date By Action Violations covered
Jul 1, 2009 Oregon Compliance order (no penalty) 6 violations (6 health-based): Arsenic
Jan 24, 2001 Oregon Compliance order with a penalty 24 violations (4 health-based): Consumer Confidence Rule, Nitrate, Total Coliform
Dec 19, 1997 Oregon Compliance order with a penalty 81 violations (2 health-based): Total Coliform, Atrazine, 2,4,5-TP, Di(2-ethylhexyl) adipate, LASSO

Where the water comes from

Hilltop Improvement District draws water from 1 well.

Annual water quality report

Hilltop Improvement District 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Hilltop Improvement District for a copy.

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 Oregon.