McCall City of
Community water system in Valley County, Idaho, serving 4,423 people from surface water. 5 rules violated in the past three years, 1 still unresolved. Owned by local government.
Quarterly compliance history
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
Currently in violation
EPA data updated Oct 7, 2026
Lead and Copper Rule
Monitoring and ReportingTreatment Technique Violation
Health-based
4 violations, Jan 2023 to open
Lead and Copper Rule
Monitoring and ReportingTreatment Technique Violation Health-based4 violations, Jan 2023 to open
Monitoring and Reporting: 3 violations, 1 still open, Jan 2023 to open. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Treatment Technique Violation, health-based: 1 violation, Mar 2024 to Jul 2024. The system did not carry out a required treatment process or corrective action.
What the rule requires: The 1991 LCR uses action levels rather than MCLs: if the 90th percentile of high-risk tap samples exceeds 15 ppb lead or 1.3 mg/L copper, the system must take escalating corrective actions. Violations typically indicate failure to maintain adequate corrosion control — the treatment that keeps lead from leaching out of pipes, solder, and fixtures.
Health effects: Lead: no safe level for children. Causes irreversible neurological damage, impaired cognitive development, behavioral problems, and reduced IQ in children under 6. In adults: hypertension, cardiovascular disease, kidney damage. Copper: acute gastrointestinal distress at high levels; liver/kidney damage at very high chronic levels. Limit: Action levels: lead 15 ppb, copper 1.3 mg/L — 90th percentile of tap samples at high-risk sites
About this ruleAlso violated in the past three years
Jul to Sep 2023 to Jul to Sep 2026
Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Treatment Technique Violation
Health-based
1 violation, Jul 2023 to Aug 2023 · Interim Enhanced Surface Water Treatment Rule
Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Treatment Technique Violation Health-based1 violation, Jul 2023 to Aug 2023 · Interim Enhanced Surface Water Treatment Rule
Treatment Technique Violation, health-based: 1 violation, Jul 2023 to Aug 2023. The system did not carry out a required treatment process or corrective action.
Contaminant on the record: Interim Enhanced Surface Water Treatment Rule.
Interim Enhanced Surface Water Treatment Rule, health effects: Violations indicate failure to meet treatment technique requirements that reduce exposure to Cryptosporidium, Giardia, and other microbial pathogens. Cryptosporidium poses the greatest risk to immunocompromised individuals, infants, and the elderly, and can cause severe or fatal illness in vulnerable populations. Limit: Treatment technique — no numeric MCL; compliance means meeting turbidity limits (0.3 NTU in 95% of monthly samples) and Cryptosporidium removal benchmarks
Stage 2 Disinfectants and Disinfection Byproducts Rule
Maximum Contaminant Level Violation
Health-based
10 violations, Oct 2023 to Jun 2026 · 2 contaminants · 10 measured values
Stage 2 Disinfectants and Disinfection Byproducts Rule
Maximum Contaminant Level Violation Health-based10 violations, Oct 2023 to Jun 2026 · 2 contaminants · 10 measured values
Maximum Contaminant Level Violation, health-based: 10 violations, Oct 2023 to Jun 2026. A sample exceeded the maximum contaminant level EPA allows in drinking water.
Limit 0.08 MG/L · Oct to Dec 2024
Limit 0.08 MG/L · Jul to Sep 2024
Limit 0.06 MG/L · Jul to Sep 2024
Limit 0.08 MG/L · Apr to Jun 2024
Limit 0.08 MG/L · Apr to Jun 2024
Limit 0.06 MG/L · Apr to Jun 2024
4 more in EPA's record
Contaminants on the record: Total Haloacetic Acids (HAA5), TTHM (Total Trihalomethanes).
Total Haloacetic Acids (HAA5), health effects: Dichloroacetic acid is a probable human carcinogen (Group B2). Long-term exposure to trichloroacetic acid may also increase cancer risk. Animal studies show liver, kidney, and reproductive effects at high doses. Limit: 0.060 mg/L (60 ppb) locational running annual average (LRAA)
TTHM (Total Trihalomethanes), health effects: Long-term exposure is associated with increased bladder cancer risk. Some studies link high TTHM exposure to adverse reproductive outcomes. Bromodichloromethane is classified as a possible human carcinogen. Limit: 0.080 mg/L (80 ppb) locational running annual average (LRAA)
Synthetic Organic Chemicals
Monitoring and Reporting
29 violations, Jan 2023 to Dec 2025 · 29 contaminants
Synthetic Organic Chemicals
Monitoring and Reporting29 violations, Jan 2023 to Dec 2025 · 29 contaminants
Monitoring and Reporting: 29 violations, Jan 2023 to Dec 2025. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Contaminants on the record: Endrin, BHC-Gamma (Lindane), Methoxychlor, Toxaphene, Dalapon, Diquat, Endothall, Glyphosate, Di(2-ethylhexyl) Adipate, Oxamyl (Vydate), Simazine, Di(2-ethylhexyl) Phthalate, Picloram, Dinoseb, Hexachlorocyclopentadiene, Carbofuran, Atrazine, Alachlor (Lasso), Heptachlor, Heptachlor Epoxide, 2,4-D, 2,4,5-TP (Silvex), Hexachlorobenzene, Benzo(a)pyrene, Pentachlorophenol, Polychlorinated Biphenyls (PCBs), 1,2-Dibromo-3-Chloropropane (DBCP), Ethylene Dibromide (EDB), Chlordane.
Public Notice Rule and Revised PN Rule
Other Violation
3 violations, May 2024 to Jun 2025 · Public Notification Rule
Public Notice Rule and Revised PN Rule
Other Violation3 violations, May 2024 to Jun 2025 · Public Notification Rule
Other Violation: 3 violations, May 2024 to Jun 2025. A requirement other than monitoring, reporting, or a contaminant limit, such as public notice or the annual water quality report.
Contaminant on the record: Public Notification Rule.
Lead and copper at the tap
The 90th percentile of the tap samples the system collected in its latest monitoring period, against EPA's action level. Levels vary between homes.
Action level 0.015 mg/L · Jan to Jun 2026
Action level 1.3 mg/L · Jul to Dec 1993
About this data
Rules violated and the list above come from EPA's SDWIS violation records, one row per violation and contaminant, grouped by the rule each row belongs to. A violation counts when its non-compliance period ended on or after Jul 1, 2023, the start of the thirteen quarters ECHO's three-year figures cover, or is still open; it is unresolved when it was still open at EPA's data refresh on Oct 7, 2026. EPA's rule code 500, "Not Regulated", is left out, as in ECHO's counts. Each rule's violation count is EPA's, and one rule can carry several: a missed monitoring round for a group of contaminants is one violation per contaminant and period. Category names are EPA's violation categories.
ECHO's own summary count of rules violated agrees with this grouping for 98.8% of active systems nationally, and its count of rules being violated for 98.7%; where they differ, the figures here follow the rows listed.
A measured value shown with a rule is the sample result EPA recorded with that violation (SDWIS viol_measure), against the limit EPA recorded on the same row (state_mcl), both in EPA's unit as written; violations without a recorded value, such as missed monitoring, show none. Other measured contaminant levels are not part of this record; each system publishes them in its annual Consumer Confidence Report.
Lead and copper are the newest 90th-percentile results in EPA's SDWA data download (LCR_SAMPLES, codes PB90 and CU90): for each monitoring period a system reports the 90th-percentile value of its tap samples, which EPA compares with its action level of 0.015 mg/L for lead and 1.3 mg/L for copper (40 CFR 141.80). A result is not a measurement of any one tap.
Service area from EPA's Public Water System Service Area Boundaries dataset: Decision Tree method, Federal agency. The system's location is the centre of the service area EPA publishes for the system.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Idaho records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.