Public water system record
CSA 70 W-4 Pioneertown
Serves an area of San Bernardino County, CA · 470 people served
Federal records show 23 health-based violations and 2 monitoring/reporting issues for CSA 70 W-4 Pioneertown in the last ten years. The most serious issue in this window was a resolved Fluoride violation.
System profile
Source water
Groundwater
ZIP
92415
EPA system ID
CA3600196
- Health-based violations, last 10 years
- 23
- Resolved
- 23
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- CSA 70 W-4 Pioneertown draws water from 1 well.
- Highest measured level in the last 10 years: Arsenic, 125 µg/L, federal limit 10 µg/L (13 times the limit), 2016.
- Most recent formal enforcement: compliance order (no penalty) by California, February 2023.
- Record on file since 1979, with 50 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 58 unknown out of 127 service lines.
Check whether CSA 70 W-4 Pioneertown 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 |
|---|---|---|---|---|
|
Fluoride
Contaminant limit exceeded
Measured 8.2 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
330 | Apr 1, 2019 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 38 µg/L, federal limit 10 µg/L (3.8 times the limit)
|
330 | Apr 1, 2019 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 8.3 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
330 | Jan 1, 2019 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 76 µg/L, federal limit 10 µg/L (7.6 times the limit)
|
330 | Jan 1, 2019 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 8.9 mg/L, federal limit 4 mg/L (2.2 times the limit)
|
330 | Oct 1, 2018 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 120 µg/L, federal limit 10 µg/L (12 times the limit)
|
330 | Oct 1, 2018 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 107 µg/L, federal limit 10 µg/L (11 times the limit)
|
330 | Jul 1, 2018 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 8.4 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
330 | Jul 1, 2018 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 8.5 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
330 | Apr 1, 2018 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 105 µg/L, federal limit 10 µg/L (11 times the limit)
|
330 | Apr 1, 2018 | Resolved | No |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2018 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 86 µg/L, federal limit 10 µg/L (8.6 times the limit)
|
330 | Jan 1, 2018 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 8.3 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
330 | Jan 1, 2018 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 73 µg/L, federal limit 10 µg/L (7.3 times the limit)
|
330 | Oct 1, 2017 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 8.1 mg/L, federal limit 4 mg/L (2 times the limit)
|
330 | Oct 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 90 µg/L, federal limit 10 µg/L (9 times the limit)
|
330 | Jul 1, 2017 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 8 mg/L, federal limit 4 mg/L (2 times the limit)
|
330 | Jul 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 98 µg/L, federal limit 10 µg/L (9.8 times the limit)
|
330 | Apr 1, 2017 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 8.1 mg/L, federal limit 4 mg/L (2 times the limit)
|
330 | Apr 1, 2017 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 6.8 mg/L, federal limit 4 mg/L (1.7 times the limit)
|
330 | Jan 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 114 µg/L, federal limit 10 µg/L (11 times the limit)
|
330 | Jan 1, 2017 | Resolved | No |
|
Fluoride
Contaminant limit exceeded
Measured 6.7 mg/L, federal limit 4 mg/L (1.7 times the limit)
|
330 | Oct 1, 2016 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 125 µg/L, federal limit 10 µg/L (13 times the limit)
|
330 | Oct 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
Full record since 1979
EPA's records for CSA 70 W-4 Pioneertown go back to 1979. Before October 19, 2016 they list 50 health-based violations (50 resolved) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 0 | 6 |
| 2010 to October 18, 2016 | 50 | 0 |
| October 19, 2016 to 2019 | 21 | 0 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Fluoride, began October 2016, Resolved.
Show all 50 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Fluoride
Contaminant limit exceeded
Measured 6.7 mg/L, federal limit 4 mg/L (1.7 times the limit)
|
Oct 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 125 µg/L, federal limit 10 µg/L (13 times the limit)
|
Oct 1, 2016 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 8.5 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
Jul 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 115 µg/L, federal limit 10 µg/L (12 times the limit)
|
Jul 1, 2016 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 8.6 mg/L, federal limit 4 mg/L (2.2 times the limit)
|
Apr 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 107.5 µg/L, federal limit 10 µg/L (11 times the limit)
|
Apr 1, 2016 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 8.4 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
Jan 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 107.5 µg/L, federal limit 10 µg/L (11 times the limit)
|
Jan 1, 2016 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Oct 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 48 µg/L, federal limit 10 µg/L (4.8 times the limit)
|
Oct 1, 2015 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 8.3 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
Oct 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 2015 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 5.4 mg/L, federal limit 4 mg/L (1.4 times the limit)
|
Jul 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 67.8 µg/L, federal limit 10 µg/L (6.8 times the limit)
|
Jul 1, 2015 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 8.85 mg/L, federal limit 4 mg/L (2.2 times the limit)
|
Apr 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Apr 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 68 µg/L, federal limit 10 µg/L (6.8 times the limit)
|
Apr 1, 2015 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 5.3 mg/L, federal limit 4 mg/L (1.3 times the limit)
|
Jan 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 58.8 µg/L, federal limit 10 µg/L (5.9 times the limit)
|
Jan 1, 2015 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 8.43 mg/L, federal limit 4 mg/L (2.1 times the limit)
|
Oct 1, 2014 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Oct 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 54.4 µg/L, federal limit 10 µg/L (5.4 times the limit)
|
Oct 1, 2014 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 8.7 mg/L, federal limit 4 mg/L (2.2 times the limit)
|
Jul 1, 2014 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 52.6 µg/L, federal limit 10 µg/L (5.3 times the limit)
|
Jul 1, 2014 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Apr 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 90 µg/L, federal limit 10 µg/L (9 times the limit)
|
Apr 1, 2014 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2014 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 5.8 mg/L, federal limit 4 mg/L (1.5 times the limit)
|
Jan 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 58.5 µg/L, federal limit 10 µg/L (5.9 times the limit)
|
Jan 1, 2014 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Oct 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 83.5 µg/L, federal limit 10 µg/L (8.4 times the limit)
|
Oct 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 89.25 µg/L, federal limit 10 µg/L (8.9 times the limit)
|
Jul 1, 2013 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Jul 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 93 µg/L, federal limit 10 µg/L (9.3 times the limit)
|
Apr 1, 2013 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 5.73 mg/L, federal limit 4 mg/L (1.4 times the limit)
|
Apr 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 98 µg/L, federal limit 10 µg/L (9.8 times the limit)
|
Jan 1, 2013 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.54 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Jan 1, 2013 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Oct 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 111 µg/L, federal limit 10 µg/L (11 times the limit)
|
Oct 1, 2012 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Oct 1, 2012 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 101 µg/L, federal limit 10 µg/L (10 times the limit)
|
Jul 1, 2012 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 5.7 mg/L, federal limit 4 mg/L (1.4 times the limit)
|
Jul 1, 2012 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Apr 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 89 µg/L, federal limit 10 µg/L (8.9 times the limit)
|
Apr 1, 2012 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Apr 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 80 µg/L, federal limit 10 µg/L (8 times the limit)
|
Jan 1, 2012 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 6.1 mg/L, federal limit 4 mg/L (1.5 times the limit)
|
Jan 1, 2012 | Resolved |
Enforcement actions
California regulators and EPA took 5 formal enforcement actions against CSA 70 W-4 Pioneertown between 2001 and 2023. The most recent was a compliance order (no penalty) in February 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 28, 2023 | California | Compliance order (no penalty) | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Jul 28, 2016 | EPA | Compliance order (no penalty) | 32 violations (32 health-based): Fluoride, Arsenic |
| Aug 8, 2014 | California | Compliance order (no penalty) | 47 violations (47 health-based): Arsenic, Fluoride, Combined Uranium |
| Aug 19, 2009 | California | Compliance order (no penalty) | 20 violations (20 health-based): Combined Uranium, Fluoride, Arsenic |
| Jul 16, 2001 | California | Compliance order (no penalty) | 5 violations (5 health-based): Fluoride, Arsenic |
What the violations mean
Fluoride
11 incidentsFluoride exceeded the federal limit
Excessive fluoride can cause dental and skeletal fluorosis
Arsenic
11 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Combined Uranium
1 incidentTest results for Combined Uranium were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
CSA 70 W-4 Pioneertown draws water from 1 well. It also buys water from Hi Desert WD. 1 other community water system buys water from CSA 70 W-4 Pioneertown.
Buys water from
- Hi Desert WD Yucca Valley, CA
Community systems that buy water from it
- Hi Desert WD Yucca Valley, CA
Annual water quality report
CSA 70 W-4 Pioneertown 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 CSA 70 W-4 Pioneertown 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 California.
Certified drinking water labs by state EPA guidance for private wells