COUNTY SERVICE AREA 11
PWSID: CA4100582 · Redwood City, CA · Serves 642 people
According to EPA Safe Drinking Water Information System (SDWIS), COUNTY SERVICE AREA 11 (PWSID CA4100582) in Redwood City, CA is listed as a CWS water system covering about 642 people. The same extract lists 2 health-based violation records spanning 2019-2019. Those 2 health-based rows for COUNTY SERVICE AREA 11 cover contaminants such as Revised Total Coliform Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
COUNTY SERVICE AREA 11 has 2 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. 1 distinct EPA contaminant code appears in this system's record, including Revised Total Coliform Rule. Recorded violations span 2019–2019. 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)
- CA4100582
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Redwood City, CA
- Population Served
- 642
- Health Violations
- Yes (2)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Revised Total Coliform Rule | 2 | 2 |
Violation History (2)
| Contaminant | Health | Date |
|---|---|---|
| Revised Total Coliform Rule | Yes | Jun 1, 2019 |
| Revised Total Coliform Rule | Yes | Jun 1, 2019 |
Frequently Asked Questions
What does EPA SDWIS list for COUNTY SERVICE AREA 11?
How many people does COUNTY SERVICE AREA 11 serve?
What violations does COUNTY SERVICE AREA 11 have?
What contaminants have been found in COUNTY SERVICE AREA 11 water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest COUNTY SERVICE AREA 11 on cumulative violation count (2) and EPA-reported population served (642). Violation-count peers include SAINT REGIS MOHAWK TRIBE, REDBY/RED LAKE, Kickapoo Traditional Tribe. Population peers include JEFFERSON CO RWD 2, VILLAGE OF CLARENCE WATER SYSTEM, NEW LIGHT WATER ASSOCIATION.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
COUNTY SERVICE AREA 11 (CA4100582) is drawn from EPA SDWIS. Nearby county systems in this extract include SFPUC CITY DISTRIBUTION DIVISION; CITY OF DALY CITY; CITY OF REDWOOD CITY; CITY OF SAN BRUNO. Health-based rows (2 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.