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Eureka Water Company

Eureka Water Company is the public water system serving 498 people in Otero County, from groundwater. EPA modelled this service area rather than tracing it from a utility map, so treat the edge as approximate.
Community system · EPA id CO0145150 · filed with EPA as “EUREKA WC”
People served
498
Service connections
147
Primary source
Groundwater
Owner
Private
Counties served
Otero
Water district

Modelled boundary. EPA estimated this service area (Random Forest) rather than tracing a utility-supplied map; treat the edge as approximate. About 0 km².

Where the water comes from

FacilityKindWater
NO 1 WELLWellGroundwater
NO 2 WELLWellGroundwater
WELL NO 3WellGroundwater

These are EPA's facility records, not DWR structures. Which decreed rights sit behind an intake is the next phase; nothing here is inferred.

DWR structures that name this system

Source Probable join · fetched 2026-09-09 · matched on DWR's recorded contact or an EPA intake name; verify on the dossier

No DWR structure on file records this system as its contact, and none of its EPA intakes matches a structure name in its districts. DWR records a contact on only a fraction of structures, and only for districts fetched from its live service, so this is absence of a record, not evidence of no rights.

Compliance record

Source Register of another agency · fetched 2026-09-09 · verify at EPA ECHO ↗

Nothing open today, but 70 health-based violations appear on the federal record historically. The history is below.

EPA's own summary: violations in 12 of the last 12 quarters, significant non-compliance in 4. In violation for, in EPA's words: 0999=Chlorine; 1040=Nitrate; 2005=Endrin; 2010=BHC-GAMMA; 2015=Methoxychlor; 2020=Toxaphene; 2031=Dalapon; 2032=Diquat; 2033=Endothall; 2035=Di(2-ethylhexyl) adipate; 2036=OXAMYL; 2037=Simazine; 2039=Di(2-ethylhexyl) phthalate; 2040=Picloram; 2041=Dinoseb; 2042=Hexachlorocyclopentadiene; 2046=Carbofuran; 2050=Atrazine; 2051=LASSO; 2065=Heptachlor; 2067=Heptachlor epoxide; 2105=2,4-D; 2110=2,4,5-TP; 2274=HEXACHLOROBENZENE; 2306=Benzo(a)pyrene; 2326=Pentachlorophenol; 2378=1,2,4-Trichlorobenzene; 2380=cis-1,2-Dichloroethylene; 2383=Total Polychlorinated Biphenyls (PCB); 2931=1,2-DIBROMO-3-CHLOROPROPANE; 2946=ETHYLENE DIBROMIDE; 2955=Xylenes, Total; 2959=Chlordane; 2964=DICHLOROMETHANE; 2968=o-Dichlorobenzene; 2969=p-Dichlorobenzene; 2976=Vinyl chloride; 2977=1,1-Dichloroethylene; 2979=trans-1,2-Dichloroethylene; 2980=1,2-Dichloroethane; 2981=1,1,1-Trichloroethane; 2982=Carbon tetrachloride; 2983=1,2-Dichloropropane; 2984=Trichloroethylene; 2985=1,1,2-Trichloroethane; 2987=Tetrachloroethylene; 2989=CHLOROBENZENE; 2990=Benzene; 2991=Toluene; 2992=Ethylbenzene; 2996=Styrene; 4000=Gross Alpha, Excl. Radon and U; 4006=Combined Uranium; 4010=Combined Radium (-226 and -228); 5000=Lead and Copper Rule; 7500=Public Notice; 8000=Revised Total Coliform Rule. Currently: 4000=Gross Alpha, Excl. Radon and U; 4010=Combined Radium (-226 and -228); 5000=Lead and Copper Rule; 7500=Public Notice.

What happened

All 70 violation records on file, grouped into the 5 distinct things EPA's codes describe. Dates are the compliance period the violation is filed against.

MCL, Average — Gross Alpha, Excl. Radon and U health-based
A measured contaminant level went over the federal limit. 31 records, 2016-01-01 to 2026-04-01. Highest measured: 29.6 PCI/L against a limit of 15.0.
Rule: Radionuclides -- radium, uranium and gross alpha.
MCL, Average — Combined Radium (-226 and -228) health-based
A measured contaminant level went over the federal limit. 36 records, 2016-01-01 to 2026-04-01. Highest measured: 22.29 PCI/L against a limit of 5.0.
Rule: Radionuclides -- radium, uranium and gross alpha.
OCCT/SOWT Study/Recommendation — Lead and Copper Rule health-based
A required treatment step was not carried out or not proved. 1 record, 2025-04-01.
Rule: Lead and Copper Rule -- corrosion of household plumbing.
Public Education — Lead and Copper Rule health-based
A required treatment step was not carried out or not proved. 1 record, 2024-12-01.
Rule: Lead and Copper Rule -- corrosion of household plumbing.
Treatment Technique No Certif. Operator — DBP Stage 1 health-based
A required treatment step was not carried out or not proved. 1 record, 2024-02-01.
Rule: Stage 1 Disinfectants and Disinfection Byproducts Rule.
Every violation record, as filed (12 of 70)
Compliance periodWhatAboutKindStatusMeasured
2026-04-01 – 2026-06-30 MCL, Average Gross Alpha, Excl. Radon and U health-based known, archived 25.0 PCI/L (limit 15.0)
2026-04-01 – 2026-06-30 MCL, Average Combined Radium (-226 and -228) health-based known, archived 17.0 PCI/L (limit 5.0)
2026-01-01 – 2026-03-31 MCL, Average Gross Alpha, Excl. Radon and U health-based known, archived 23.0 PCI/L (limit 15.0)
2026-01-01 – 2026-03-31 MCL, Average Combined Radium (-226 and -228) health-based known, archived 18.0 PCI/L (limit 5.0)
2025-10-01 – 2025-12-31 MCL, Average Gross Alpha, Excl. Radon and U health-based known, archived 23.0 PCI/L (limit 15.0)
2025-10-01 – 2025-12-31 MCL, Average Combined Radium (-226 and -228) health-based known, archived 18.0 PCI/L (limit 5.0)
2025-07-01 – 2025-09-30 MCL, Average Gross Alpha, Excl. Radon and U health-based known, archived 16.0 PCI/L (limit 15.0)
2025-07-01 – 2025-09-30 MCL, Average Combined Radium (-226 and -228) health-based known, archived 18.0 PCI/L (limit 5.0)
2025-04-01 – 2025-06-30 MCL, Average Gross Alpha, Excl. Radon and U health-based known, archived 21.0 PCI/L (limit 15.0)
2025-04-01 – 2025-06-30 MCL, Average Combined Radium (-226 and -228) health-based known, archived 20.0 PCI/L (limit 5.0)
2025-04-01 OCCT/SOWT Study/Recommendation Lead and Copper Rule health-based returned to compliance (2026-02-26)
2025-01-01 – 2025-03-31 MCL, Average Gross Alpha, Excl. Radon and U health-based known, archived 24.9 PCI/L (limit 15.0)

The remaining 58 are on the ECHO report.

What the regulator did about it

170 enforcement actions on this system's federal record. In Colorado the state is the primacy agency, so most actions are the state's; EPA acts directly on tribal systems and when it steps in.

DateActionBy
2026-05-11 St Violation/Reminder Notice state
2026-05-06 St Violation/Reminder Notice state
2026-03-14 St Compliance achieved
System submitted acceptable LCN copy and COD on 3.14.26 for samples collected in 202507. SOX applied RNK 5.4.26
state
2026-03-04 St Violation/Reminder Notice state
2026-03-04 St Violation/Reminder Notice state
2026-02-26 St Compliance achieved
System submitted request for pause on 2.22.26, granted on 2.26.26 RNK 2.27.26
state
2026-02-26 St Intentional no-action
System submitted request for pause on 2.22.26, granted on 2.26.26 RNK 2.27.26
state
2026-02-07 St Compliance achieved
System submitted acceptable PN copy and COD for failing to submit OCCT recommendation RNK 2.9.26
state
2026-02-07 St Public Notif received state
2026-01-30 St Violation/Reminder Notice state
2026-01-28 St Compliance achieved
System sampled for SOCs on 12.31.25 and reported late on 1.28.26 RNK 2.6.26
state
2026-01-28 St Compliance achieved
System collected VOCs on 12/31/2025 and reported late on 1.28.26 RNK 2.6.26
state
2026-01-23 St Compliance achieved
System properly sampled for TC with associated chlorine residual in Jan 2026. Collected on 1.6.26 and reported on 1.23.26 RNK 2.6.26
state
2026-01-23 St Compliance achieved
System collected TC sample on 1.6.26 with .42 residual and reported on 1.23.26 for Jan2026 RNK 2.6.26
state
2026-01-19 St Violation/Reminder Notice state
2026-01-19 St Public Notif requested state
2026-01-19 St Violation/Reminder Notice state
2026-01-19 St Public Notif requested state
2026-01-19 St Violation/Reminder Notice state
2026-01-19 St Public Notif requested state

20 most recent of 170; the rest are on the ECHO report.

Lead and copper

The latest 90th-percentile lead result is 0.0 mg/L (sampling period ending 2026-06-30) against an action level of 0.015 mg/L, below it. 10 results on file, 1 lead result over the action level all time.

The action level is not a health limit: it is the level at which the rule requires a system to act (corrosion control, public education, and in some cases replacing lead service lines). Lead mostly enters water from household plumbing, so a system-wide percentile does not tell you what comes out of one tap.

Violation, enforcement and lead/copper records are EPA SDWIS federal reporting, fetched monthly; the summary is EPA ECHO. Code names come from EPA's own REF_CODE_VALUE table. SDWIS carries violations, not routine sample results — nitrate, disinfection by-product and PFAS values are not in it, and a clean record here means nothing was reported as a violation, not that nothing was ever detected. For what was measured, ask the system for its Consumer Confidence Report.

PFAS and lithium: EPA's UCMR 5 monitoring, 2023–2025

Source Register of another agency · fetched 2026-09-09 · verify at EPA UCMR occurrence data ↗

EPA did not sample this system under UCMR 5 (the rule covered every system serving more than 3,300 people and a drawn sample of smaller ones).

Common questions

Who provides drinking water in Rocky Ford, Colorado?

Eureka Water Company is the public water system serving 498 people in Otero County, from groundwater. Its EPA public water system id is CO0145150.

Where does Eureka Water Company get its water?

Eureka Water Company reports groundwater as its primary source. EPA lists its source facilities as NO 1 WELL, NO 2 WELL, WELL NO 3.

Does Eureka Water Company have any drinking water violations?

EPA's compliance record shows no open health-based violations for Eureka Water Company at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.

Every provider in Otero County.

The record

EPA SDWIS federal reporting as of 2026-09-08; the compliance record above is EPA's own, fetched monthly, and the ECHO report carries the rest. Report a problem →