Question 1

Is Portola Improvement Association MWC water safe to drink?

Accepted Answer

Portola Improvement Association MWC (PWS ID: CA4100555) has 53 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 90 people using Surface Water sources.

Question 2

How many people does Portola Improvement Association MWC serve?

Accepted Answer

EPA SDWIS reports that Portola Improvement Association MWC serves 90 people (this public water system's service population, not the municipal population of La Honda or any other city). It is a Private-owned system using Surface Water water sources with 34 service connections. The operator address is listed in La Honda, California.

Question 3

What type of violations does Portola Improvement Association MWC have?

Accepted Answer

Portola Improvement Association MWC has 53 total violations: 1 health-based violations (MCL exceedances or treatment failures), 51 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Portola Improvement Association MWC water?

Accepted Answer

No PFAS testing data is available for Portola Improvement Association MWC under the EPA's UCMR5 monitoring program.

Question 5

What water source does Portola Improvement Association MWC use?

Accepted Answer

Portola Improvement Association MWC uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

How does Portola Improvement Association MWC's violation count compare nationally?

Accepted Answer

Portola Improvement Association MWC has 53 recorded EPA SDWIS violations, fewer than 41% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 58% of that cohort has fewer violations than Portola Improvement Association MWC. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
Coliform (TCR)	MR	2	2010
Surface Water Treatment Rule	MR	2	2024
Nitrate-Nitrite	MR	2	2005
Benzene	MR	2	2005
CHLOROBENZENE	MR	2	2005
Tetrachloroethylene	MR	2	2005
1,1,1-Trichloroethane	MR	2	2005
1,1,2-Trichloroethane	MR	2	2005
o-Dichlorobenzene	MR	2	2005
1,2-Dichloropropane	MR	2	2005
trans-1,2-Dichloroethylene	MR	2	2005
Trichloroethylene	MR	2	2005
cis-1,2-Dichloroethylene	MR	2	2005
Xylenes, Total	MR	2	2005
Gross Alpha, Excl. Radon and U	MR	2	1981
Toluene	MR	2	2005
Vinyl chloride	MR	2	2005
1,2-Dichloroethane	MR	2	2005
p-Dichlorobenzene	MR	2	2005
Styrene	MR	2	2005
1,2,4-Trichlorobenzene	MR	2	2005
Ethylbenzene	MR	2	2005
1,1-Dichloroethylene	MR	2	2005
DICHLOROMETHANE	MR	2	2005
Carbon tetrachloride	MR	2	2005
Lead and Copper Rule	MR	1	1993
Mercury	MCL	1	1980

Portola Improvement Association MWC

Portola Improvement Association MWC standing, mid SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for Portola Improvement Association MWC

Nationwide peers

Cross-state systems near this violation count