Question 1

Is Tierra del Mar Water Co water safe to drink?

Accepted Answer

Tierra del Mar Water Co (PWS ID: OR4100610) has 193 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 80 people using Surface Water sources.

Question 2

How many people does Tierra del Mar Water Co serve?

Accepted Answer

EPA SDWIS reports that Tierra del Mar Water Co serves 80 people (this public water system's service population, not the municipal population of Cloverdale or any other city). It is a Private-owned system using Surface Water water sources with 271 service connections. The operator address is listed in Cloverdale, Oregon.

Question 3

What type of violations does Tierra del Mar Water Co have?

Accepted Answer

Tierra del Mar Water Co has 193 total violations: 2 health-based violations (MCL exceedances or treatment failures), 183 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Tierra del Mar Water Co water?

Accepted Answer

No PFAS testing data is available for Tierra del Mar Water Co under the EPA's UCMR5 monitoring program.

Question 5

What water source does Tierra del Mar Water Co use?

Accepted Answer

Tierra del Mar Water Co 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 Tierra del Mar Water Co's violation count compare nationally?

Accepted Answer

Tierra del Mar Water Co has 193 recorded EPA SDWIS violations, fewer than 15% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 85% of that cohort has fewer violations than Tierra del Mar Water Co. 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
Surface Water Treatment Rule	MR	102	2024
Coliform (TCR)	MR	17	2016
TTHM	MR	6	2010
Total Haloacetic Acids (HAA5)	MR	6	2010
Consumer Confidence Rule	Other	5	2025
Nitrate	MR	4	2011
Revised Total Coliform Rule	MON	3	2025
1,2,4-Trichlorobenzene	MR	2	2011
cis-1,2-Dichloroethylene	MR	2	2011
DICHLOROMETHANE	MR	2	2011
o-Dichlorobenzene	MR	2	2011
1,1-Dichloroethylene	MR	2	2011
trans-1,2-Dichloroethylene	MR	2	2011
1,2-Dichloroethane	MR	2	2011
1,1,1-Trichloroethane	MR	2	2011
1,2-Dichloropropane	MR	2	2011
Trichloroethylene	MR	2	2011
Benzene	MR	2	2011
Toluene	MR	2	2011
p-Dichlorobenzene	MR	2	2011
Vinyl chloride	MR	2	2011
Surface Water Treatment Rule	TT	2	1992
Xylenes, Total	MR	2	2011
Styrene	MR	2	2011
Tetrachloroethylene	MR	2	2011
Ethylbenzene	MR	2	2011
Carbon tetrachloride	MR	2	2011
1,1,2-Trichloroethane	MR	2	2011
CHLOROBENZENE	MR	2	2011
Combined Radium (-226 and -228)	MR	1	1976

Tierra del Mar Water Co

Tierra del Mar Water Co standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for Tierra del Mar Water Co

Nationwide peers

Cross-state systems with comparable violation load