Public water system record
Rainbird Valley MWC
Serves Weldon, Kern County, CA · 238 people served
Federal records show 69 health-based violations and 1 monitoring/reporting issue for Rainbird Valley MWC in the last ten years. The most serious issue in this window was a Combined Uranium violation that EPA lists as archived, not resolved.
System profile
Source water
Groundwater
ZIP
93283
EPA system ID
CA1500393
- Health-based violations, last 10 years
- 69
- Resolved
- 0
- Unresolved
- 0
- Archived by EPA
- 69
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 1
Key facts
- Rainbird Valley MWC draws water from 2 wells.
- Highest measured level in the last 10 years: Nitrate, 26 mg/L, federal limit 10 mg/L (2.6 times the limit), 2019.
- Most recent formal enforcement: compliance order with a penalty by California, October 2021.
- Record on file since 1980, with 20 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 99 service lines.
Check whether Rainbird Valley MWC 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 |
|---|---|---|---|---|
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 14 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
330 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
330 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
330 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Oct 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Jul 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Apr 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 14 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
330 | Apr 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Jan 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Oct 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 14 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
330 | Jul 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Apr 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 16 mg/L, federal limit 10 mg/L (1.6 times the limit)
|
330 | Apr 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 16 mg/L, federal limit 10 mg/L (1.6 times the limit)
|
330 | Jan 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 18 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
330 | Oct 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 22 mg/L, federal limit 10 mg/L (2.2 times the limit)
|
330 | Jul 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 24 mg/L, federal limit 10 mg/L (2.4 times the limit)
|
330 | Jan 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 26 mg/L, federal limit 10 mg/L (2.6 times the limit)
|
330 | Oct 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 24 mg/L, federal limit 10 mg/L (2.4 times the limit)
|
330 | Jul 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Apr 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 24 mg/L, federal limit 10 mg/L (2.4 times the limit)
|
330 | Apr 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 25 mg/L, federal limit 10 mg/L (2.5 times the limit)
|
330 | Jan 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 25 mg/L, federal limit 10 mg/L (2.5 times the limit)
|
330 | Oct 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 23 mg/L, federal limit 10 mg/L (2.3 times the limit)
|
330 | Jul 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Apr 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 21 mg/L, federal limit 10 mg/L (2.1 times the limit)
|
330 | Apr 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 19 mg/L, federal limit 10 mg/L (1.9 times the limit)
|
330 | Jan 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 18 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
330 | Oct 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jul 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 19 mg/L, federal limit 10 mg/L (1.9 times the limit)
|
330 | Jul 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Apr 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Oct 1, 2016 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 20 mg/L, federal limit 10 mg/L (2 times the limit)
|
330 | Oct 1, 2016 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 1980
EPA's records for Rainbird Valley MWC go back to 1980. Before October 19, 2016 they list 20 health-based violations (2 resolved, 18 archived by EPA without a recorded fix) and 11 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 5 |
| 1990s | 3 | 1 |
| 2000s | 0 | 4 |
| 2010 to October 18, 2016 | 17 | 1 |
| October 19, 2016 to 2019 | 22 | 1 |
| 2020s | 45 | 0 |
Most recent health-based violation before October 19, 2016: Combined Uranium, began October 2016, Archived.
Show all 20 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Uranium
Contaminant limit exceeded
|
Oct 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 20 mg/L, federal limit 10 mg/L (2 times the limit)
|
Oct 1, 2016 | Archived |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 16 mg/L, federal limit 10 mg/L (1.6 times the limit)
|
Jul 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
Apr 1, 2016 | Archived |
|
Combined Uranium
Contaminant limit exceeded
|
Apr 1, 2016 | Archived |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
Jan 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2015 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2015 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2015 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2014 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2014 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2014 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2013 | Archived |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 2013 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2013 | Archived |
|
Combined Uranium
Contaminant limit exceeded
|
Jul 1, 1999 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1997 | Resolved |
Enforcement actions
California regulators took 5 formal enforcement actions against Rainbird Valley MWC between 2008 and 2021. The most recent was a compliance order with a penalty in October 2021.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 27, 2021 | California | Compliance order with a penalty | 3 violations (3 health-based): Nitrate, Combined Uranium |
| Mar 4, 2020 | California | Compliance order (no penalty) | 86 violations (85 health-based): Nitrate, Combined Uranium |
| Dec 2, 2013 | California | Compliance order (no penalty) | 41 violations (40 health-based): Combined Uranium, Nitrate |
| Jun 27, 2013 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| May 16, 2008 | California | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
What the violations mean
Combined Uranium
36 incidentsTest results for Combined Uranium were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Nitrate
33 incidentsNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Where the water comes from
Rainbird Valley MWC draws water from 2 wells.
Annual water quality report
Rainbird Valley MWC 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 Rainbird Valley MWC 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