Public water system record
MD 46 Ahwahnee Resorts
Serves Ahwahnee, Madera County, CA · 300 people served
Federal records show 5 health-based violations and 22 monitoring/reporting issues for MD 46 Ahwahnee Resorts in the last ten years. The most serious issue in this window was a resolved Arsenic violation.
System profile
- Health-based violations, last 10 years
- 5
- Resolved
- 5
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 22
Key facts
- MD 46 Ahwahnee Resorts draws water from 3 wells.
- Highest measured level in the last 10 years: Arsenic, 0.019 mg/L, federal limit 0.01 mg/L (1.9 times the limit), 2016.
- Most recent formal enforcement: compliance order (no penalty) by California, December 2016.
- Record on file since 2005, with 36 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 91 service lines.
Check whether MD 46 Ahwahnee Resorts 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 |
|---|---|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
|
330 | Nov 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
330 | Sep 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
|
330 | Jun 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
330 | May 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.019 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
|
330 | Dec 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Arsenic
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
Full record since 2005
EPA's records for MD 46 Ahwahnee Resorts go back to 2005. Before October 19, 2016 they list 36 health-based violations (36 resolved) and 29 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 7 | 3 |
| 2010 to October 18, 2016 | 29 | 26 |
| October 19, 2016 to 2019 | 5 | 1 |
Most recent health-based violation before October 19, 2016: Arsenic, began January 2015, Resolved.
Show all 36 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.0105 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jan 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0102 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
Oct 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0101 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
Jul 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0107 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0107 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jan 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Oct 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2013 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2013 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0105 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jan 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0103 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
Oct 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0103 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
Jul 1, 2012 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Apr 1, 2012 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Apr 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0103 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
Apr 1, 2012 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2011 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2011 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0104 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
Oct 1, 2010 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 2010 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2010 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Apr 1, 2010 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Mar 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jan 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0106 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2009 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0109 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2009 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Mar 1, 2009 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2009 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0126 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jan 1, 2009 | Resolved |
Enforcement actions
California regulators took 2 formal enforcement actions against MD 46 Ahwahnee Resorts between 2014 and 2016, filed as 3 records in EPA's data. The most recent was a compliance order (no penalty) in December 2016.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 6, 2016 | California | Compliance order (no penalty) | 1 violation: Combined Uranium |
| Aug 12, 2014 | California | Compliance order (no penalty) | 40 violations (39 health-based): Arsenic, Combined Uranium |
What the violations mean
Arsenic
5 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Where the water comes from
MD 46 Ahwahnee Resorts draws water from 3 wells.
Annual water quality report
MD 46 Ahwahnee Resorts 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 MD 46 Ahwahnee Resorts 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