Public water system record
Sheridan Lake Highlands, Inc.
Serves an area of Pennington County, SD that includes Rapid City · 85 people served
Federal records show 4 health-based violations and no monitoring/reporting issues for Sheridan Lake Highlands, Inc. in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.
System profile
- Health-based violations, last 10 years
- 4
- Resolved
- 4
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Sheridan Lake Highlands, Inc. draws water from 1 well.
- Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.066 mg/L, federal limit 0.06 mg/L (1.1 times the limit), 2020.
- Most recent formal enforcement: compliance order (no penalty) by South Dakota, September 2009.
- Record on file since 2008, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 27 service lines.
Check whether Sheridan Lake Highlands, Inc. 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 |
|---|---|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.066 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Apr 1, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 1, 2019 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 1, 2019 | Resolved | No |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Jun 28, 2017 | Resolved | No |
Full record since 2008
EPA's records for Sheridan Lake Highlands, Inc. go back to 2008. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 9 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 2 | 7 |
| 2010 to October 18, 2016 | 4 | 2 |
| October 19, 2016 to 2019 | 3 | 0 |
| 2020s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Groundwater Rule, began October 2014, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
Oct 1, 2014 | Resolved |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
May 31, 2013 | Resolved |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Apr 17, 2010 | Resolved |
|
Lead and Copper Rule
Treatment technique failure
|
Sep 2, 2009 | Resolved |
|
Lead and Copper Rule
Treatment technique failure
|
Mar 6, 2009 | Resolved |
Enforcement actions
South Dakota regulators took 1 formal enforcement action against Sheridan Lake Highlands, Inc. in 2009, filed as 6 records in EPA's data. The most recent was a compliance order (no penalty) in September 2009.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 14, 2009 | South Dakota | Compliance order (no penalty) | 6 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), Chlorine, Total Coliform |
What the violations mean
Groundwater Rule
2 incidentsThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Haloacetic Acids (HAA5)
1 incidentHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Stage 1 Disinfection Byproducts Rule
1 incidentThe system did not meet a treatment requirement of the Stage 1 Disinfectants and Disinfection Byproducts Rule
Byproducts form when disinfectants react with natural material in water. Long-term exposure above federal limits may increase cancer risk
Where the water comes from
Sheridan Lake Highlands, Inc. draws water from 1 well.
Annual water quality report
Sheridan Lake Highlands, Inc. 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 Sheridan Lake Highlands, Inc. 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 South Dakota.
Certified drinking water labs by state EPA guidance for private wells