Question 1

Is North Hill Water Corporation water safe to drink?

Accepted Answer

North Hill Water Corporation (PWS ID: OR4100374) has 231 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 100 people using Groundwater sources.

Question 2

How many people does North Hill Water Corporation serve?

Accepted Answer

EPA SDWIS reports that North Hill Water Corporation serves 100 people (this public water system's service population, not the municipal population of Hermiston or any other city). It is a Private-owned system using Groundwater water sources with 29 service connections. The operator address is listed in Hermiston, Oregon.

Question 3

What type of violations does North Hill Water Corporation have?

Accepted Answer

North Hill Water Corporation has 231 total violations: 35 health-based violations (MCL exceedances or treatment failures), 179 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in North Hill Water Corporation water?

Accepted Answer

No PFAS testing data is available for North Hill Water Corporation under the EPA's UCMR5 monitoring program.

Question 5

What water source does North Hill Water Corporation use?

Accepted Answer

North Hill Water Corporation uses Groundwater 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 North Hill Water Corporation's violation count compare nationally?

Accepted Answer

North Hill Water Corporation has 231 recorded EPA SDWIS violations, fewer than 13% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 87% of that cohort has fewer violations than North Hill Water Corporation. 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	39	2010
Coliform (TCR)	MCL	32	2010
Consumer Confidence Rule	Other	12	2025
Nitrate	MR	12	2022
Revised Total Coliform Rule	MON	6	2022
Public Notice	Other	5	2024
E. COLI	MR	4	2024
Gross Alpha, Excl. Radon and U	MR	3	2014
Revised Total Coliform Rule	TT	3	2024
Endrin	MR	2	2005
BHC-GAMMA	MR	2	2005
Diquat	MR	2	2005
Endothall	MR	2	2005
Di(2-ethylhexyl) adipate	MR	2	2005
Simazine	MR	2	2005
Di(2-ethylhexyl) phthalate	MR	2	2005
Dinoseb	MR	2	2005
Atrazine	MR	2	2005
LASSO	MR	2	2005
Heptachlor	MR	2	2005
2,4-D	MR	2	2005
2,4,5-TP	MR	2	2005
HEXACHLOROBENZENE	MR	2	2005
Pentachlorophenol	MR	2	2005
Total Polychlorinated Biphenyls (PCB)	MR	2	2005
1,2-DIBROMO-3-CHLOROPROPANE	MR	2	2005
Chlordane	MR	2	2005
Methoxychlor	MR	2	2005
Glyphosate	MR	2	2005
Picloram	MR	2	2005

North Hill Water Corporation

North Hill Water Corporation standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for North Hill Water Corporation

Nationwide peers

Cross-state systems with comparable violation load