SONOMA COUNTY CSA 41-JENNER
PWSID: CA4900532 · Santa Rosa, CA · Serves 406 people
According to EPA Safe Drinking Water Information System (SDWIS), SONOMA COUNTY CSA 41-JENNER (PWSID CA4900532) in Santa Rosa, CA is listed as a CWS water system covering about 406 people. The same extract lists 18 health-based violation records spanning 2017-2020. Those 18 health-based rows for SONOMA COUNTY CSA 41-JENNER cover contaminants such as TTHM, Total Haloacetic Acids (HAA5); they remain historical EPA registry entries, not a current compliance or drinkability score.
SONOMA COUNTY CSA 41-JENNER has 18 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 2 distinct EPA contaminant codes appear in this system's record, including TTHM, Total Haloacetic Acids (HAA5). Recorded violations span 2017–2020. Day-to-day primacy enforcement for this system runs through the California drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- CA4900532
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Santa Rosa, CA
- Population Served
- 406
- Health Violations
- Yes (18)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 10 | 10 |
| Total Haloacetic Acids (HAA5) | 8 | 8 |
Violation History (18)
| Contaminant | Health | Date |
|---|---|---|
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2020 |
| TTHM | Yes | Apr 1, 2020 |
| TTHM | Yes | Apr 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2020 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Oct 1, 2019 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2019 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2019 |
| TTHM | Yes | Jul 1, 2018 |
| TTHM | Yes | Apr 1, 2018 |
| TTHM | Yes | Jan 1, 2018 |
| TTHM | Yes | Oct 1, 2017 |
Frequently Asked Questions
What does EPA SDWIS list for SONOMA COUNTY CSA 41-JENNER?
How many people does SONOMA COUNTY CSA 41-JENNER serve?
What violations does SONOMA COUNTY CSA 41-JENNER have?
What contaminants have been found in SONOMA COUNTY CSA 41-JENNER water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest SONOMA COUNTY CSA 41-JENNER on cumulative violation count (18) and EPA-reported population served (406). Violation-count peers include Jicarilla Dulce, WHITE SHIELD WATER TREATMENT PLANT, SAND POINT WATER SYSTEM.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
Explore More
About This Data
SONOMA COUNTY CSA 41-JENNER (CA4900532) is drawn from EPA SDWIS. Nearby county systems in this extract include SANTA ROSA, CITY OF; PETALUMA, CITY OF; ROHNERT PARK, CITY OF; WINDSOR, TOWN OF. Health-based rows (18 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.