Environment Agency monitoring point

ERMINGTON STW FE

EA sampling point SW-70920109 · Lower Erme · 181 samples · 4 determinands · latest 2026-03-04

Ammoniacal Nitrogen as N (MILLIGRAM PER LITRE) over time

Samples — Ammoniacal Nitrogen as N

Date	Result	Unit	Purpose
2026-03-04 09:42	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2026-02-20 09:45	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2026-01-18 09:43	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-11-26 09:28	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-11-21 11:03	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-11-02 09:05	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-10-01 09:13	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-09-26 09:05	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-07-03 09:42	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-06-27 09:25	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-05-29 07:40	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-04-09 07:40	4	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-03-21 10:00	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-02-21 09:55	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-01-08 09:00	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-12-04 07:50	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-11-08 08:20	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-10-23 08:00	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-09-15 10:30	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-08-16 08:33	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-07-03 07:50	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-06-07 08:30	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-05-09 08:00	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-05-03 07:10	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-02-14 11:20	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-01-10 10:30	0.48	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-12-09 09:05	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-12-01 09:15	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-11-24 09:00	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-10-06 08:45	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-09-12 09:30	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-08-18 08:45	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-06-09 10:35	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-06-01 11:30	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-05-05 10:35	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-03-08 08:45	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-02-15 09:35	0.26	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-01-11 10:50	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-12-09 10:10	0.99	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-11-09 12:30	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-10-07 12:20	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-09-13 09:12	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-08-08 12:20	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-07-12 12:13	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-06-23 08:15	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-05-23 11:05	0.51	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-04-22 08:20	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-02-06 11:00	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-01-11 09:30	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-12-10 12:30	0.53	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-11-10 13:30	0.38	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-10-13 09:40	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-07-13 09:35	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-06-24 09:05	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-05-24 08:35	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-04-22 10:35	0.47	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-03-20 08:50	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-02-02 12:10	—	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-01-12 09:50	0.35	MILLIGRAM PER LITRE	WATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA

Source: Environment Agency Water Quality Archive (per-sample observations), Open Government Licence. Regulator monitoring — complements Friends of the Dart’s citizen sampling.